Update dependencies

common/tls/ech_client.go

@@ -11,9 +11,9 @@ import (
 	"net/netip"
 	"os"
 
+	cftls "github.com/sagernet/cloudflare-tls"
 	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/option"
-	cftls "github.com/sagernet/sing-box/transport/cloudflaretls"
 	"github.com/sagernet/sing-dns"
 	E "github.com/sagernet/sing/common/exceptions"
 

go.mod

@@ -6,7 +6,6 @@ require (
 	berty.tech/go-libtor v1.0.385
 	github.com/Dreamacro/clash v1.11.8
 	github.com/caddyserver/certmagic v0.17.2
-	github.com/cloudflare/circl v1.2.1-0.20220831060716-4cf0150356fc
 	github.com/cretz/bine v0.2.0
 	github.com/database64128/tfo-go/v2 v2.0.2
 	github.com/dustin/go-humanize v1.0.0
@@ -22,9 +21,10 @@ require (
 	github.com/oschwald/maxminddb-golang v1.10.0
 	github.com/pires/go-proxyproto v0.6.2
 	github.com/refraction-networking/utls v1.1.5
-	github.com/sagernet/quic-go v0.0.0-20220818150011-de611ab3e2bb
+	github.com/sagernet/cloudflare-tls v0.0.0-20221031050923-d70792f4c3a0
+	github.com/sagernet/quic-go v0.0.0-20221031051350-29d8bb1c8127
 	github.com/sagernet/sing v0.0.0-20221008120626-60a9910eefe4
-	github.com/sagernet/sing-dns v0.0.0-20221029093630-568471e6216d
+	github.com/sagernet/sing-dns v0.0.0-20221031055845-7de76401d403
 	github.com/sagernet/sing-shadowsocks v0.0.0-20220819002358-7461bb09a8f6
 	github.com/sagernet/sing-tun v0.0.0-20221028015259-ea5c35f62f07
 	github.com/sagernet/sing-vmess v0.0.0-20220925083655-063bc85ea685
@@ -49,20 +49,17 @@ require (
 require (
 	github.com/ajg/form v1.5.1 // indirect
 	github.com/andybalholm/brotli v1.0.4 // indirect
+	github.com/cloudflare/circl v1.2.1-0.20221019164342-6ab4dfed8f3c // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0 // indirect
-	github.com/golang/mock v1.6.0 // indirect
 	github.com/golang/protobuf v1.5.2 // indirect
 	github.com/google/btree v1.0.1 // indirect
 	github.com/inconshreveable/mousetrap v1.0.1 // indirect
 	github.com/klauspost/compress v1.15.9 // indirect
 	github.com/klauspost/cpuid/v2 v2.1.1 // indirect
 	github.com/libdns/libdns v0.2.1 // indirect
-	github.com/marten-seemann/qpack v0.2.1 // indirect
+	github.com/marten-seemann/qpack v0.3.0 // indirect
-	github.com/marten-seemann/qtls-go1-18 v0.1.2 // indirect
+	github.com/marten-seemann/qtls-go1-18 v0.1.3 // indirect
-	github.com/marten-seemann/qtls-go1-19 v0.1.0 // indirect
+	github.com/marten-seemann/qtls-go1-19 v0.1.1 // indirect
-	github.com/nxadm/tail v1.4.8 // indirect
-	github.com/onsi/ginkgo v1.16.5 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/sagernet/abx-go v0.0.0-20220819185957-dba1257d738e // indirect
 	github.com/sagernet/go-tun2socks v1.16.12-0.20220818015926-16cb67876a61 // indirect
@@ -71,14 +68,13 @@ require (
 	github.com/vishvananda/netns v0.0.0-20211101163701-50045581ed74 // indirect
 	go.uber.org/multierr v1.6.0 // indirect
 	go.uber.org/zap v1.23.0 // indirect
-	golang.org/x/exp v0.0.0-20220722155223-a9213eeb770e // indirect
+	golang.org/x/exp v0.0.0-20221028150844-83b7d23a625f // indirect
-	golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4 // indirect
+	golang.org/x/mod v0.6.0 // indirect
 	golang.org/x/text v0.4.0 // indirect
 	golang.org/x/time v0.0.0-20191024005414-555d28b269f0 // indirect
-	golang.org/x/tools v0.1.12 // indirect
+	golang.org/x/tools v0.2.0 // indirect
 	golang.zx2c4.com/wintun v0.0.0-20211104114900-415007cec224 // indirect
 	google.golang.org/genproto v0.0.0-20210722135532-667f2b7c528f // indirect
-	gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 	lukechampine.com/blake3 v1.1.7 // indirect
 )

go.sum

@@ -16,8 +16,8 @@ github.com/caddyserver/certmagic v0.17.2 h1:o30seC1T/dBqBCNNGNHWwj2i5/I/FMjBbTAh
 github.com/caddyserver/certmagic v0.17.2/go.mod h1:ouWUuC490GOLJzkyN35eXfV8bSbwMwSf4bdhkIxtdQE=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
-github.com/cloudflare/circl v1.2.1-0.20220831060716-4cf0150356fc h1:307gdRLiZ08dwOIKwc5lAQ19DRFaQQvdhHalyB4Asx8=
+github.com/cloudflare/circl v1.2.1-0.20221019164342-6ab4dfed8f3c h1:K1VdSnBZiGapczwcUKnE1qcsMBclA84DUOD2NG/78VY=
-github.com/cloudflare/circl v1.2.1-0.20220831060716-4cf0150356fc/go.mod h1:+CauBF6R70Jqcyl8N2hC8pAXYbWkGIezuSbuGLtRhnw=
+github.com/cloudflare/circl v1.2.1-0.20221019164342-6ab4dfed8f3c/go.mod h1:+CauBF6R70Jqcyl8N2hC8pAXYbWkGIezuSbuGLtRhnw=
 github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
 github.com/cncf/udpa/go v0.0.0-20201120205902-5459f2c99403/go.mod h1:WmhPx2Nbnhtbo57+VJT5O0JRkEi1Wbu0z5j0R8u5Hbk=
 github.com/cncf/xds/go v0.0.0-20210312221358-fbca930ec8ed/go.mod h1:eXthEFrGJvWHgFFCl3hGmgk+/aYT6PnTQLykKQRLhEs=
@@ -38,8 +38,6 @@ github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1m
 github.com/envoyproxy/go-control-plane v0.9.9-0.20201210154907-fd9021fe5dad/go.mod h1:cXg6YxExXjJnVBQHBLXeUAgxn2UodCpnH306RInaBQk=
 github.com/envoyproxy/go-control-plane v0.9.9-0.20210512163311-63b5d3c536b0/go.mod h1:hliV/p42l8fGbc6Y9bQ70uLwIvmJyVE5k4iMKlh8wCQ=
 github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
-github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
-github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
 github.com/fsnotify/fsnotify v1.6.0 h1:n+5WquG0fcWoWp6xPWfHdbskMCQaFnG6PfBrh1Ky4HY=
 github.com/fsnotify/fsnotify v1.6.0/go.mod h1:sl3t1tCWJFWoRz9R8WJCbQihKKwmorjAbSClcnxKAGw=
 github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
@@ -49,14 +47,11 @@ github.com/go-chi/cors v1.2.1 h1:xEC8UT3Rlp2QuWNEr4Fs/c2EAGVKBwy/1vHx3bppil4=
 github.com/go-chi/cors v1.2.1/go.mod h1:sSbTewc+6wYHBBCW7ytsFSn836hqM7JxpglAy2Vzc58=
 github.com/go-chi/render v1.0.2 h1:4ER/udB0+fMWB2Jlf15RV3F4A2FDuYi/9f+lFttR/Lg=
 github.com/go-chi/render v1.0.2/go.mod h1:/gr3hVkmYR0YlEy3LxCuVRFzEu9Ruok+gFqbIofjao0=
-github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0 h1:p104kn46Q8WdvHunIJ9dAyjPVtrBPhSr3KT2yUst43I=
-github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0/go.mod h1:fyg7847qk6SyHyPtNmDHnmrv/HOrqktSC+C9fM+CJOE=
 github.com/gofrs/uuid v4.3.0+incompatible h1:CaSVZxm5B+7o45rtab4jC2G37WGYX1zQfuU2i6DSvnc=
 github.com/gofrs/uuid v4.3.0+incompatible/go.mod h1:b2aQJv3Z4Fp6yNu3cdSllBxTCLRxnplIgP/c0N/04lM=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
 github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
 github.com/golang/mock v1.6.0 h1:ErTB+efbowRARo13NNdxyJji2egdxLGQhRaY+DUumQc=
-github.com/golang/mock v1.6.0/go.mod h1:p6yTPP+5HYm5mzsMV8JkE6ZKdX+/wYM6Hr+LicevLPs=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.3.3/go.mod h1:vzj43D7+SQXF/4pzW/hwtAqwc6iTitCiVSaWz5lYuqw=
@@ -84,7 +79,6 @@ github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+
 github.com/grpc-ecosystem/grpc-gateway v1.16.0/go.mod h1:BDjrQk3hbvj6Nolgz8mAMFbcEtjT1g+wF4CSlocrBnw=
 github.com/hashicorp/yamux v0.1.1 h1:yrQxtgseBDrq9Y652vSRDvsKCJKOUD+GzTS4Y0Y8pvE=
 github.com/hashicorp/yamux v0.1.1/go.mod h1:CtWFDAQgb7dxtzFs4tWbplKIe2jSi3+5vKbgIO0SLnQ=
-github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
 github.com/inconshreveable/mousetrap v1.0.1 h1:U3uMjPSQEBMNp1lFxmllqCPM6P5u/Xq7Pgzkat/bFNc=
 github.com/inconshreveable/mousetrap v1.0.1/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
 github.com/klauspost/compress v1.15.9 h1:wKRjX6JRtDdrE9qwa4b/Cip7ACOshUI4smpCQanqjSY=
@@ -101,27 +95,18 @@ github.com/libdns/libdns v0.2.1 h1:Wu59T7wSHRgtA0cfxC+n1c/e+O3upJGWytknkmFEDis=
 github.com/libdns/libdns v0.2.1/go.mod h1:yQCXzk1lEZmmCPa857bnk4TsOiqYasqpyOEeSObbb40=
 github.com/logrusorgru/aurora v2.0.3+incompatible h1:tOpm7WcpBTn4fjmVfgpQq0EfczGlG91VSDkswnjF5A8=
 github.com/logrusorgru/aurora v2.0.3+incompatible/go.mod h1:7rIyQOR62GCctdiQpZ/zOJlFyk6y+94wXzv6RNZgaR4=
-github.com/marten-seemann/qpack v0.2.1 h1:jvTsT/HpCn2UZJdP+UUB53FfUUgeOyG5K1ns0OJOGVs=
+github.com/marten-seemann/qpack v0.3.0 h1:UiWstOgT8+znlkDPOg2+3rIuYXJ2CnGDkGUXN6ki6hE=
-github.com/marten-seemann/qpack v0.2.1/go.mod h1:F7Gl5L1jIgN1D11ucXefiuJS9UMVP2opoCp2jDKb7wc=
+github.com/marten-seemann/qpack v0.3.0/go.mod h1:cGfKPBiP4a9EQdxCwEwI/GEeWAsjSekBvx/X8mh58+g=
-github.com/marten-seemann/qtls-go1-18 v0.1.2 h1:JH6jmzbduz0ITVQ7ShevK10Av5+jBEKAHMntXmIV7kM=
+github.com/marten-seemann/qtls-go1-18 v0.1.3 h1:R4H2Ks8P6pAtUagjFty2p7BVHn3XiwDAl7TTQf5h7TI=
-github.com/marten-seemann/qtls-go1-18 v0.1.2/go.mod h1:mJttiymBAByA49mhlNZZGrH5u1uXYZJ+RW28Py7f4m4=
+github.com/marten-seemann/qtls-go1-18 v0.1.3/go.mod h1:mJttiymBAByA49mhlNZZGrH5u1uXYZJ+RW28Py7f4m4=
-github.com/marten-seemann/qtls-go1-19 v0.1.0 h1:rLFKD/9mp/uq1SYGYuVZhm83wkmU95pK5df3GufyYYU=
+github.com/marten-seemann/qtls-go1-19 v0.1.1 h1:mnbxeq3oEyQxQXwI4ReCgW9DPoPR94sNlqWoDZnjRIE=
-github.com/marten-seemann/qtls-go1-19 v0.1.0/go.mod h1:5HTDWtVudo/WFsHKRNuOhWlbdjrfs5JHrYb0wIJqGpI=
+github.com/marten-seemann/qtls-go1-19 v0.1.1/go.mod h1:5HTDWtVudo/WFsHKRNuOhWlbdjrfs5JHrYb0wIJqGpI=
 github.com/mholt/acmez v1.0.4 h1:N3cE4Pek+dSolbsofIkAYz6H1d3pE+2G0os7QHslf80=
 github.com/mholt/acmez v1.0.4/go.mod h1:qFGLZ4u+ehWINeJZjzPlsnjJBCPAADWTcIqE/7DAYQY=
 github.com/miekg/dns v1.1.50 h1:DQUfb9uc6smULcREF09Uc+/Gd46YWqJd5DbpPE9xkcA=
 github.com/miekg/dns v1.1.50/go.mod h1:e3IlAVfNqAllflbibAZEWOXOQ+Ynzk/dDozDxY7XnME=
-github.com/nxadm/tail v1.4.4/go.mod h1:kenIhsEOeOJmVchQTgglprH7qJGnHDVpk1VPCcaMI8A=
+github.com/onsi/ginkgo/v2 v2.3.0 h1:kUMoxMoQG3ogk/QWyKh3zibV7BKZ+xBpWil1cTylVqc=
-github.com/nxadm/tail v1.4.8 h1:nPr65rt6Y5JFSKQO7qToXr7pePgD6Gwiw05lkbyAQTE=
+github.com/onsi/gomega v1.22.1 h1:pY8O4lBfsHKZHM/6nrxkhVPUznOlIu3quZcKP/M20KI=
-github.com/nxadm/tail v1.4.8/go.mod h1:+ncqLTQzXmGhMZNUePPaPqPvBxHAIsmXswZKocGu+AU=
-github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
-github.com/onsi/ginkgo v1.12.1/go.mod h1:zj2OWP4+oCPe1qIXoGWkgMRwljMUYCdkwsT2108oapk=
-github.com/onsi/ginkgo v1.14.0/go.mod h1:iSB4RoI2tjJc9BBv4NKIKWKya62Rps+oPG/Lv9klQyY=
-github.com/onsi/ginkgo v1.16.5 h1:8xi0RTUf59SOSfEtZMvwTvXYMzG4gV23XVHOZiXNtnE=
-github.com/onsi/ginkgo v1.16.5/go.mod h1:+E8gABHa3K6zRBolWtd+ROzc/U5bkGt0FwiG042wbpU=
-github.com/onsi/gomega v1.7.1/go.mod h1:XdKZgCCFLUoM/7CFJVPcG8C1xQ1AJ0vpAezJrB7JYyY=
-github.com/onsi/gomega v1.10.1/go.mod h1:iN09h71vgCQne3DLsj+A5owkum+a2tYe+TOCB1ybHNo=
-github.com/onsi/gomega v1.13.0 h1:7lLHu94wT9Ij0o6EWWclhu0aOh32VxhkwEJvzuWPeak=
 github.com/oschwald/maxminddb-golang v1.10.0 h1:Xp1u0ZhqkSuopaKmk1WwHtjF0H9Hd9181uj2MQ5Vndg=
 github.com/oschwald/maxminddb-golang v1.10.0/go.mod h1:Y2ELenReaLAZ0b400URyGwvYxHV1dLIxBuyOsyYjHK0=
 github.com/pires/go-proxyproto v0.6.2 h1:KAZ7UteSOt6urjme6ZldyFm4wDe/z0ZUP0Yv0Dos0d8=
@@ -137,18 +122,20 @@ github.com/rogpeppe/fastuuid v1.2.0/go.mod h1:jVj6XXZzXRy/MSR5jhDC/2q6DgLz+nrA6L
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
 github.com/sagernet/abx-go v0.0.0-20220819185957-dba1257d738e h1:5CFRo8FJbCuf5s/eTBdZpmMbn8Fe2eSMLNAYfKanA34=
 github.com/sagernet/abx-go v0.0.0-20220819185957-dba1257d738e/go.mod h1:qbt0dWObotCfcjAJJ9AxtFPNSDUfZF+6dCpgKEOBn/g=
+github.com/sagernet/cloudflare-tls v0.0.0-20221031050923-d70792f4c3a0 h1:KyhtFFt1Jtp5vW2ohNvstvQffTOQ/s5vENuGXzdA+TM=
+github.com/sagernet/cloudflare-tls v0.0.0-20221031050923-d70792f4c3a0/go.mod h1:D4SFEOkJK+4W1v86ZhX0jPM0rAL498fyQAChqMtes/I=
 github.com/sagernet/go-tun2socks v1.16.12-0.20220818015926-16cb67876a61 h1:5+m7c6AkmAylhauulqN/c5dnh8/KssrE9c93TQrXldA=
 github.com/sagernet/go-tun2socks v1.16.12-0.20220818015926-16cb67876a61/go.mod h1:QUQ4RRHD6hGGHdFMEtR8T2P6GS6R3D/CXKdaYHKKXms=
 github.com/sagernet/netlink v0.0.0-20220905062125-8043b4a9aa97 h1:iL5gZI3uFp0X6EslacyapiRz7LLSJyr4RajF/BhMVyE=
 github.com/sagernet/netlink v0.0.0-20220905062125-8043b4a9aa97/go.mod h1:xLnfdiJbSp8rNqYEdIW/6eDO4mVoogml14Bh2hSiFpM=
-github.com/sagernet/quic-go v0.0.0-20220818150011-de611ab3e2bb h1:wc0yQ+SBn4TaTYRwpwvEm3nc4eRdxk6vtRbouLVZAzk=
+github.com/sagernet/quic-go v0.0.0-20221031051350-29d8bb1c8127 h1:rraPfWlUy2cdZ61FLXRCFbL0lb7oocScbr4Ac0rIzTU=
-github.com/sagernet/quic-go v0.0.0-20220818150011-de611ab3e2bb/go.mod h1:MIccjRKnPTjWwAOpl+AUGWOkzyTd9tERytudxu+1ra4=
+github.com/sagernet/quic-go v0.0.0-20221031051350-29d8bb1c8127/go.mod h1:oWFbojDMm85/Jbm/fyWoo8Pux6dIssxGi3q1r+5642A=
 github.com/sagernet/sing v0.0.0-20220812082120-05f9836bff8f/go.mod h1:QVsS5L/ZA2Q5UhQwLrn0Trw+msNd/NPGEhBKR/ioWiY=
 github.com/sagernet/sing v0.0.0-20220817130738-ce854cda8522/go.mod h1:QVsS5L/ZA2Q5UhQwLrn0Trw+msNd/NPGEhBKR/ioWiY=
 github.com/sagernet/sing v0.0.0-20221008120626-60a9910eefe4 h1:LO7xMvMGhYmjQg2vjhTzsODyzs9/WLYu5Per+/8jIeo=
 github.com/sagernet/sing v0.0.0-20221008120626-60a9910eefe4/go.mod h1:zvgDYKI+vCAW9RyfyrKTgleI+DOa8lzHMPC7VZo3OL4=
-github.com/sagernet/sing-dns v0.0.0-20221029093630-568471e6216d h1:U/oM43D++tdv2r9OfHbcd4Q1pMCs8+HW7hPkAD2rrvk=
+github.com/sagernet/sing-dns v0.0.0-20221031055845-7de76401d403 h1:kKDO97rx+JVJ4HI1hTWOnCCI6um5clK1LfnIto2DY4M=
-github.com/sagernet/sing-dns v0.0.0-20221029093630-568471e6216d/go.mod h1:SrvWLfOSlnFmH32CWXicfilAGgIXR0VjrH6yRbuXYww=
+github.com/sagernet/sing-dns v0.0.0-20221031055845-7de76401d403/go.mod h1:cyL9DHbBZ0Xlt/8VD0i6yeiDayH0KzWGNQb8MYhhz7g=
 github.com/sagernet/sing-shadowsocks v0.0.0-20220819002358-7461bb09a8f6 h1:JJfDeYYhWunvtxsU/mOVNTmFQmnzGx9dY034qG6G3g4=
 github.com/sagernet/sing-shadowsocks v0.0.0-20220819002358-7461bb09a8f6/go.mod h1:EX3RbZvrwAkPI2nuGa78T2iQXmrkT+/VQtskjou42xM=
 github.com/sagernet/sing-tun v0.0.0-20221028015259-ea5c35f62f07 h1:zupkkVVFWv0QsLPjxEzlzXlLfDk1hUujK8ctJSIKFCI=
@@ -175,7 +162,6 @@ github.com/stretchr/testify v1.8.1 h1:w7B6lhMri9wdJUVmEZPGGhZzrYTPvgJArz7wNPgYKs
 github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
 github.com/vishvananda/netns v0.0.0-20211101163701-50045581ed74 h1:gga7acRE695APm9hlsSMoOoE65U4/TcqNj90mc69Rlg=
 github.com/vishvananda/netns v0.0.0-20211101163701-50045581ed74/go.mod h1:DD4vA1DwXk04H54A1oHXtwZmA0grkVMdPxx/VGLCah0=
-github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.3.5/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=
 go.etcd.io/bbolt v1.3.6 h1:/ecaJf0sk1l4l6V4awd65v2C3ILy7MSj+s/x1ADCIMU=
 go.etcd.io/bbolt v1.3.6/go.mod h1:qXsaaIqmgQH0T+OPdb99Bf+PKfBBQVAdyD6TY9G8XM4=
@@ -201,30 +187,25 @@ golang.org/x/crypto v0.0.0-20220829220503-c86fa9a7ed90/go.mod h1:IxCIyHEi3zRg3s0
 golang.org/x/crypto v0.1.0 h1:MDRAIl0xIo9Io2xV565hzXHw3zVseKrJKodhohM5CjU=
 golang.org/x/crypto v0.1.0/go.mod h1:RecgLatLF4+eUMCP1PoPZQb+cVrJcOPbHkTkbkB9sbw=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
-golang.org/x/exp v0.0.0-20220722155223-a9213eeb770e h1:+WEEuIdZHnUeJJmEUjyYC2gfUMj69yZXw17EnHg/otA=
+golang.org/x/exp v0.0.0-20221028150844-83b7d23a625f h1:Al51T6tzvuh3oiwX11vex3QgJ2XTedFPGmbEVh8cdoc=
-golang.org/x/exp v0.0.0-20220722155223-a9213eeb770e/go.mod h1:Kr81I6Kryrl9sr8s2FK3vxD90NdsKWRuOIl2O4CvYbA=
+golang.org/x/exp v0.0.0-20221028150844-83b7d23a625f/go.mod h1:CxIveKay+FTh1D0yPZemJVgC/95VzuuOLq5Qi4xnoYc=
 golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
 golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=
 golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
 golang.org/x/lint v0.0.0-20190930215403-16217165b5de/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
 golang.org/x/lint v0.0.0-20210508222113-6edffad5e616/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
 golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
-golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
-golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4 h1:6zppjxzCulZykYSLyVDYbneBfbaBIQPYMevg0bEwv2s=
+golang.org/x/mod v0.6.0 h1:b9gGHsz9/HhJ3HF5DHQytPpuwocVTChQJK3AvoLRD5I=
-golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
+golang.org/x/mod v0.6.0/go.mod h1:4mET923SAdbXp2ki8ey+zGs1SLqsuM2Y0uvdZR/fUNI=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190108225652-1e06a53dbb7e/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190213061140-3a22650c66bd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20200520004742-59133d7f0dd7/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
-golang.org/x/net v0.0.0-20200707034311-ab3426394381/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
 golang.org/x/net v0.0.0-20200822124328-c89045814202/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
-golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4/go.mod h1:p54w0d4576C0XHj96bSt6lcn1PtDYWL6XObtHCRCNQM=
 golang.org/x/net v0.0.0-20210525063256-abc453219eb5/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
@@ -240,24 +221,16 @@ golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20220819030929-7fc1605a5dde h1:ejfdSekXMDxDLbRrJMwUk6KnSLZ2McaUCVcIKM+N6jc=
 golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190403152447-81d4e9dc473e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20190904154756-749cb33beabd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20191005200804-aed5e4c7ecf9/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20191120155948-bd437916bb0e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200217220822-9197077df867/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200519105757-fe76b779f299/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200923182605-d9f96fdee20d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20210112080510-489259a85091/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210330210617-4fbd30eecc44/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210510120138-977fb7262007/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
@@ -274,7 +247,6 @@ golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9sn
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/term v0.1.0 h1:g6Z6vPFA9dYBAF7DWcH6sCcOntplXsDKcliusYijMlw=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.5/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
@@ -290,12 +262,10 @@ golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3
 golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20200130002326-2f3ba24bd6e7/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
-golang.org/x/tools v0.0.0-20201224043029-2b0845dc783e/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
-golang.org/x/tools v0.1.1/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
 golang.org/x/tools v0.1.5/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
 golang.org/x/tools v0.1.6-0.20210726203631-07bc1bf47fb2/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
-golang.org/x/tools v0.1.12 h1:VveCTK38A2rkS8ZqFY25HIDFscX5X9OoEhJd3quQmXU=
+golang.org/x/tools v0.2.0 h1:G6AHpWxTMGY1KyEYoAQ5WTtIekUUvDNjan3ugu60JvE=
-golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
+golang.org/x/tools v0.2.0/go.mod h1:y4OqIKeOV/fWJetJ8bXPU1sEVniLMIyDAZWeHdV+NTA=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
@@ -338,15 +308,9 @@ google.golang.org/protobuf v1.28.1/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqw
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
-gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
-gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.3/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU=
-gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=

transport/cloudflaretls/README.md

@@ -1,7 +0,0 @@
-# cloudflare-tls
-
-kanged from https://github.com/cloudflare/go
-branch: cf
-commit: 4d2a840e50d2b4316aa19934271832d080c44f7f
-go: 1.18.5
-changes: use github.com/cloudflare/circl 4cf0150356fc62a0ea5c0eec2f64b756cb404145

transport/cloudflaretls/alert.go

@@ -1,101 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package tls
-
-import "strconv"
-
-type alert uint8
-
-const (
-	// alert level
-	alertLevelWarning = 1
-	alertLevelError   = 2
-)
-
-const (
-	alertCloseNotify                  alert = 0
-	alertUnexpectedMessage            alert = 10
-	alertBadRecordMAC                 alert = 20
-	alertDecryptionFailed             alert = 21
-	alertRecordOverflow               alert = 22
-	alertDecompressionFailure         alert = 30
-	alertHandshakeFailure             alert = 40
-	alertBadCertificate               alert = 42
-	alertUnsupportedCertificate       alert = 43
-	alertCertificateRevoked           alert = 44
-	alertCertificateExpired           alert = 45
-	alertCertificateUnknown           alert = 46
-	alertIllegalParameter             alert = 47
-	alertUnknownCA                    alert = 48
-	alertAccessDenied                 alert = 49
-	alertDecodeError                  alert = 50
-	alertDecryptError                 alert = 51
-	alertExportRestriction            alert = 60
-	alertProtocolVersion              alert = 70
-	alertInsufficientSecurity         alert = 71
-	alertInternalError                alert = 80
-	alertInappropriateFallback        alert = 86
-	alertUserCanceled                 alert = 90
-	alertNoRenegotiation              alert = 100
-	alertMissingExtension             alert = 109
-	alertUnsupportedExtension         alert = 110
-	alertCertificateUnobtainable      alert = 111
-	alertUnrecognizedName             alert = 112
-	alertBadCertificateStatusResponse alert = 113
-	alertBadCertificateHashValue      alert = 114
-	alertUnknownPSKIdentity           alert = 115
-	alertCertificateRequired          alert = 116
-	alertNoApplicationProtocol        alert = 120
-	alertECHRequired                  alert = 121
-)
-
-var alertText = map[alert]string{
-	alertCloseNotify:                  "close notify",
-	alertUnexpectedMessage:            "unexpected message",
-	alertBadRecordMAC:                 "bad record MAC",
-	alertDecryptionFailed:             "decryption failed",
-	alertRecordOverflow:               "record overflow",
-	alertDecompressionFailure:         "decompression failure",
-	alertHandshakeFailure:             "handshake failure",
-	alertBadCertificate:               "bad certificate",
-	alertUnsupportedCertificate:       "unsupported certificate",
-	alertCertificateRevoked:           "revoked certificate",
-	alertCertificateExpired:           "expired certificate",
-	alertCertificateUnknown:           "unknown certificate",
-	alertIllegalParameter:             "illegal parameter",
-	alertUnknownCA:                    "unknown certificate authority",
-	alertAccessDenied:                 "access denied",
-	alertDecodeError:                  "error decoding message",
-	alertDecryptError:                 "error decrypting message",
-	alertExportRestriction:            "export restriction",
-	alertProtocolVersion:              "protocol version not supported",
-	alertInsufficientSecurity:         "insufficient security level",
-	alertInternalError:                "internal error",
-	alertInappropriateFallback:        "inappropriate fallback",
-	alertUserCanceled:                 "user canceled",
-	alertNoRenegotiation:              "no renegotiation",
-	alertMissingExtension:             "missing extension",
-	alertUnsupportedExtension:         "unsupported extension",
-	alertCertificateUnobtainable:      "certificate unobtainable",
-	alertUnrecognizedName:             "unrecognized name",
-	alertBadCertificateStatusResponse: "bad certificate status response",
-	alertBadCertificateHashValue:      "bad certificate hash value",
-	alertUnknownPSKIdentity:           "unknown PSK identity",
-	alertCertificateRequired:          "certificate required",
-	alertNoApplicationProtocol:        "no application protocol",
-	alertECHRequired:                  "ECH required",
-}
-
-func (e alert) String() string {
-	s, ok := alertText[e]
-	if ok {
-		return "tls: " + s
-	}
-	return "tls: alert(" + strconv.Itoa(int(e)) + ")"
-}
-
-func (e alert) Error() string {
-	return e.String()
-}

transport/cloudflaretls/auth.go

@@ -1,345 +0,0 @@
-// Copyright 2017 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package tls
-
-import (
-	"bytes"
-	"crypto"
-	"crypto/ecdsa"
-	"crypto/ed25519"
-	"crypto/elliptic"
-	"crypto/rsa"
-	"errors"
-	"fmt"
-	"hash"
-	"io"
-
-	circlPki "github.com/cloudflare/circl/pki"
-	circlSign "github.com/cloudflare/circl/sign"
-)
-
-// verifyHandshakeSignature verifies a signature against pre-hashed
-// (if required) handshake contents.
-func verifyHandshakeSignature(sigType uint8, pubkey crypto.PublicKey, hashFunc crypto.Hash, signed, sig []byte) error {
-	switch sigType {
-	case signatureECDSA:
-		pubKey, ok := pubkey.(*ecdsa.PublicKey)
-		if !ok {
-			return fmt.Errorf("expected an ECDSA public key, got %T", pubkey)
-		}
-		if !ecdsa.VerifyASN1(pubKey, signed, sig) {
-			return errors.New("ECDSA verification failure")
-		}
-	case signatureEd25519:
-		pubKey, ok := pubkey.(ed25519.PublicKey)
-		if !ok {
-			return fmt.Errorf("expected an Ed25519 public key, got %T", pubkey)
-		}
-		if !ed25519.Verify(pubKey, signed, sig) {
-			return errors.New("Ed25519 verification failure")
-		}
-	case signaturePKCS1v15:
-		pubKey, ok := pubkey.(*rsa.PublicKey)
-		if !ok {
-			return fmt.Errorf("expected an RSA public key, got %T", pubkey)
-		}
-		if err := rsa.VerifyPKCS1v15(pubKey, hashFunc, signed, sig); err != nil {
-			return err
-		}
-	case signatureRSAPSS:
-		pubKey, ok := pubkey.(*rsa.PublicKey)
-		if !ok {
-			return fmt.Errorf("expected an RSA public key, got %T", pubkey)
-		}
-		signOpts := &rsa.PSSOptions{SaltLength: rsa.PSSSaltLengthEqualsHash}
-		if err := rsa.VerifyPSS(pubKey, hashFunc, signed, sig, signOpts); err != nil {
-			return err
-		}
-	default:
-		scheme := circlSchemeBySigType(sigType)
-		if scheme == nil {
-			return errors.New("internal error: unknown signature type")
-		}
-		pubKey, ok := pubkey.(circlSign.PublicKey)
-		if !ok {
-			return fmt.Errorf("expected a %s public key, got %T", scheme.Name(), pubkey)
-		}
-		if !scheme.Verify(pubKey, signed, sig, nil) {
-			return fmt.Errorf("%s verification failure", scheme.Name())
-		}
-	}
-	return nil
-}
-
-const (
-	serverSignatureContext = "TLS 1.3, server CertificateVerify\x00"
-	clientSignatureContext = "TLS 1.3, client CertificateVerify\x00"
-)
-
-var signaturePadding = []byte{
-	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
-	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
-	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
-	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
-	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
-	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
-	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
-	0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
-}
-
-// signedMessage returns the pre-hashed (if necessary) message to be signed by
-// certificate keys in TLS 1.3. See RFC 8446, Section 4.4.3.
-func signedMessage(sigHash crypto.Hash, context string, transcript hash.Hash) []byte {
-	if sigHash == directSigning {
-		b := &bytes.Buffer{}
-		b.Write(signaturePadding)
-		io.WriteString(b, context)
-		b.Write(transcript.Sum(nil))
-		return b.Bytes()
-	}
-	h := sigHash.New()
-	h.Write(signaturePadding)
-	io.WriteString(h, context)
-	h.Write(transcript.Sum(nil))
-	return h.Sum(nil)
-}
-
-// typeAndHashFromSignatureScheme returns the corresponding signature type and
-// crypto.Hash for a given TLS SignatureScheme.
-func typeAndHashFromSignatureScheme(signatureAlgorithm SignatureScheme) (sigType uint8, hash crypto.Hash, err error) {
-	switch signatureAlgorithm {
-	case PKCS1WithSHA1, PKCS1WithSHA256, PKCS1WithSHA384, PKCS1WithSHA512:
-		sigType = signaturePKCS1v15
-	case PSSWithSHA256, PSSWithSHA384, PSSWithSHA512:
-		sigType = signatureRSAPSS
-	case ECDSAWithSHA1, ECDSAWithP256AndSHA256, ECDSAWithP384AndSHA384, ECDSAWithP521AndSHA512:
-		sigType = signatureECDSA
-	case Ed25519:
-		sigType = signatureEd25519
-	default:
-		scheme := circlPki.SchemeByTLSID(uint(signatureAlgorithm))
-		if scheme == nil {
-			return 0, 0, fmt.Errorf("unsupported signature algorithm: %v", signatureAlgorithm)
-		}
-		sigType = sigTypeByCirclScheme(scheme)
-		if sigType == 0 {
-			return 0, 0, fmt.Errorf("github.com/cloudflare/circl scheme %s not supported",
-				scheme.Name())
-		}
-	}
-	switch signatureAlgorithm {
-	case PKCS1WithSHA1, ECDSAWithSHA1:
-		hash = crypto.SHA1
-	case PKCS1WithSHA256, PSSWithSHA256, ECDSAWithP256AndSHA256:
-		hash = crypto.SHA256
-	case PKCS1WithSHA384, PSSWithSHA384, ECDSAWithP384AndSHA384:
-		hash = crypto.SHA384
-	case PKCS1WithSHA512, PSSWithSHA512, ECDSAWithP521AndSHA512:
-		hash = crypto.SHA512
-	case Ed25519:
-		hash = directSigning
-	default:
-		scheme := circlPki.SchemeByTLSID(uint(signatureAlgorithm))
-		if scheme == nil {
-			return 0, 0, fmt.Errorf("unsupported signature algorithm: %v", signatureAlgorithm)
-		}
-		hash = directSigning
-	}
-	return sigType, hash, nil
-}
-
-// legacyTypeAndHashFromPublicKey returns the fixed signature type and crypto.Hash for
-// a given public key used with TLS 1.0 and 1.1, before the introduction of
-// signature algorithm negotiation.
-func legacyTypeAndHashFromPublicKey(pub crypto.PublicKey) (sigType uint8, hash crypto.Hash, err error) {
-	switch pub.(type) {
-	case *rsa.PublicKey:
-		return signaturePKCS1v15, crypto.MD5SHA1, nil
-	case *ecdsa.PublicKey:
-		return signatureECDSA, crypto.SHA1, nil
-	case ed25519.PublicKey:
-		// RFC 8422 specifies support for Ed25519 in TLS 1.0 and 1.1,
-		// but it requires holding on to a handshake transcript to do a
-		// full signature, and not even OpenSSL bothers with the
-		// complexity, so we can't even test it properly.
-		return 0, 0, fmt.Errorf("tls: Ed25519 public keys are not supported before TLS 1.2")
-	case circlSign.PublicKey:
-		return 0, 0, fmt.Errorf("tls: circl public keys are not supported before TLS 1.2")
-	default:
-		return 0, 0, fmt.Errorf("tls: unsupported public key: %T", pub)
-	}
-}
-
-var rsaSignatureSchemes = []struct {
-	scheme          SignatureScheme
-	minModulusBytes int
-	maxVersion      uint16
-}{
-	// RSA-PSS is used with PSSSaltLengthEqualsHash, and requires
-	//    emLen >= hLen + sLen + 2
-	{PSSWithSHA256, crypto.SHA256.Size()*2 + 2, VersionTLS13},
-	{PSSWithSHA384, crypto.SHA384.Size()*2 + 2, VersionTLS13},
-	{PSSWithSHA512, crypto.SHA512.Size()*2 + 2, VersionTLS13},
-	// PKCS #1 v1.5 uses prefixes from hashPrefixes in crypto/rsa, and requires
-	//    emLen >= len(prefix) + hLen + 11
-	// TLS 1.3 dropped support for PKCS #1 v1.5 in favor of RSA-PSS.
-	{PKCS1WithSHA256, 19 + crypto.SHA256.Size() + 11, VersionTLS12},
-	{PKCS1WithSHA384, 19 + crypto.SHA384.Size() + 11, VersionTLS12},
-	{PKCS1WithSHA512, 19 + crypto.SHA512.Size() + 11, VersionTLS12},
-	{PKCS1WithSHA1, 15 + crypto.SHA1.Size() + 11, VersionTLS12},
-}
-
-// signatureSchemesForCertificate returns the list of supported SignatureSchemes
-// for a given certificate, based on the public key and the protocol version,
-// and optionally filtered by its explicit SupportedSignatureAlgorithms.
-//
-// This function must be kept in sync with supportedSignatureAlgorithms.
-func signatureSchemesForCertificate(version uint16, cert *Certificate) []SignatureScheme {
-	priv, ok := cert.PrivateKey.(crypto.Signer)
-	if !ok {
-		return nil
-	}
-
-	var sigAlgs []SignatureScheme
-	switch pub := priv.Public().(type) {
-	case *ecdsa.PublicKey:
-		if version != VersionTLS13 {
-			// In TLS 1.2 and earlier, ECDSA algorithms are not
-			// constrained to a single curve.
-			sigAlgs = []SignatureScheme{
-				ECDSAWithP256AndSHA256,
-				ECDSAWithP384AndSHA384,
-				ECDSAWithP521AndSHA512,
-				ECDSAWithSHA1,
-			}
-			break
-		}
-		switch pub.Curve {
-		case elliptic.P256():
-			sigAlgs = []SignatureScheme{ECDSAWithP256AndSHA256}
-		case elliptic.P384():
-			sigAlgs = []SignatureScheme{ECDSAWithP384AndSHA384}
-		case elliptic.P521():
-			sigAlgs = []SignatureScheme{ECDSAWithP521AndSHA512}
-		default:
-			return nil
-		}
-	case *rsa.PublicKey:
-		size := pub.Size()
-		sigAlgs = make([]SignatureScheme, 0, len(rsaSignatureSchemes))
-		for _, candidate := range rsaSignatureSchemes {
-			if size >= candidate.minModulusBytes && version <= candidate.maxVersion {
-				sigAlgs = append(sigAlgs, candidate.scheme)
-			}
-		}
-	case ed25519.PublicKey:
-		sigAlgs = []SignatureScheme{Ed25519}
-	case circlSign.PublicKey:
-		scheme := pub.Scheme()
-		tlsScheme, ok := scheme.(circlPki.TLSScheme)
-		if !ok {
-			return nil
-		}
-		sigAlgs = []SignatureScheme{SignatureScheme(tlsScheme.TLSIdentifier())}
-	default:
-		return nil
-	}
-
-	if cert.SupportedSignatureAlgorithms != nil {
-		var filteredSigAlgs []SignatureScheme
-		for _, sigAlg := range sigAlgs {
-			if isSupportedSignatureAlgorithm(sigAlg, cert.SupportedSignatureAlgorithms) {
-				filteredSigAlgs = append(filteredSigAlgs, sigAlg)
-			}
-		}
-		return filteredSigAlgs
-	}
-	return sigAlgs
-}
-
-// selectSignatureSchemeDC picks a SignatureScheme from the peer's preference list
-// that works with the selected delegated credential. It's only called for protocol
-// versions that support delegated credential, so TLS 1.3.
-func selectSignatureSchemeDC(vers uint16, dc *DelegatedCredential, peerAlgs []SignatureScheme, peerAlgsDC []SignatureScheme) (SignatureScheme, error) {
-	if vers != VersionTLS13 {
-		return 0, errors.New("unsupported TLS version for dc")
-	}
-
-	if !isSupportedSignatureAlgorithm(dc.algorithm, peerAlgs) {
-		return undefinedSignatureScheme, errors.New("tls: peer doesn't support the delegated credential's signature")
-	}
-
-	// Pick signature scheme in the peer's preference order, as our
-	// preference order is not configurable.
-	for _, preferredAlg := range peerAlgsDC {
-		if preferredAlg == dc.cred.expCertVerfAlgo {
-			return preferredAlg, nil
-		}
-	}
-	return 0, errors.New("tls: peer doesn't support the delegated credential's signature algorithm")
-}
-
-// selectSignatureScheme picks a SignatureScheme from the peer's preference list
-// that works with the selected certificate. It's only called for protocol
-// versions that support signature algorithms, so TLS 1.2 and 1.3.
-func selectSignatureScheme(vers uint16, c *Certificate, peerAlgs []SignatureScheme) (SignatureScheme, error) {
-	supportedAlgs := signatureSchemesForCertificate(vers, c)
-	if len(supportedAlgs) == 0 {
-		return 0, unsupportedCertificateError(c)
-	}
-	if len(peerAlgs) == 0 && vers == VersionTLS12 {
-		// For TLS 1.2, if the client didn't send signature_algorithms then we
-		// can assume that it supports SHA1. See RFC 5246, Section 7.4.1.4.1.
-		peerAlgs = []SignatureScheme{PKCS1WithSHA1, ECDSAWithSHA1}
-	}
-	// Pick signature scheme in the peer's preference order, as our
-	// preference order is not configurable.
-	for _, preferredAlg := range peerAlgs {
-		if isSupportedSignatureAlgorithm(preferredAlg, supportedAlgs) {
-			return preferredAlg, nil
-		}
-	}
-	return 0, errors.New("tls: peer doesn't support any of the certificate's signature algorithms")
-}
-
-// unsupportedCertificateError returns a helpful error for certificates with
-// an unsupported private key.
-func unsupportedCertificateError(cert *Certificate) error {
-	switch cert.PrivateKey.(type) {
-	case rsa.PrivateKey, ecdsa.PrivateKey:
-		return fmt.Errorf("tls: unsupported certificate: private key is %T, expected *%T",
-			cert.PrivateKey, cert.PrivateKey)
-	case *ed25519.PrivateKey:
-		return fmt.Errorf("tls: unsupported certificate: private key is *ed25519.PrivateKey, expected ed25519.PrivateKey")
-	}
-
-	signer, ok := cert.PrivateKey.(crypto.Signer)
-	if !ok {
-		return fmt.Errorf("tls: certificate private key (%T) does not implement crypto.Signer",
-			cert.PrivateKey)
-	}
-
-	switch pub := signer.Public().(type) {
-	case *ecdsa.PublicKey:
-		switch pub.Curve {
-		case elliptic.P256():
-		case elliptic.P384():
-		case elliptic.P521():
-		default:
-			return fmt.Errorf("tls: unsupported certificate curve (%s)", pub.Curve.Params().Name)
-		}
-	case *rsa.PublicKey:
-		return fmt.Errorf("tls: certificate RSA key size too small for supported signature algorithms")
-	case ed25519.PublicKey:
-	default:
-		return fmt.Errorf("tls: unsupported certificate key (%T)", pub)
-	}
-
-	if cert.SupportedSignatureAlgorithms != nil {
-		return fmt.Errorf("tls: peer doesn't support the certificate custom signature algorithms")
-	}
-
-	return fmt.Errorf("tls: internal error: unsupported key (%T)", cert.PrivateKey)
-}

transport/cloudflaretls/cfkem.go

@@ -1,104 +0,0 @@
-// Copyright 2022 Cloudflare, Inc. All rights reserved. Use of this source code
-// is governed by a BSD-style license that can be found in the LICENSE file.
-//
-// Glue to add Circl's (post-quantum) hybrid KEMs.
-//
-// To enable set CurvePreferences with the desired scheme as the first element:
-//
-//   import (
-//      "github.com/cloudflare/circl/kem/tls"
-//      "github.com/cloudflare/circl/kem/hybrid"
-//
-//          [...]
-//
-//   config.CurvePreferences = []tls.CurveID{
-//      hybrid.X25519Kyber512Draft00().(tls.TLSScheme).TLSCurveID(),
-//      tls.X25519,
-//      tls.P256,
-//   }
-
-package tls
-
-import (
-	"fmt"
-	"io"
-
-	"github.com/cloudflare/circl/kem"
-	"github.com/cloudflare/circl/kem/hybrid"
-)
-
-// Either ecdheParameters or kem.PrivateKey
-type clientKeySharePrivate interface{}
-
-var (
-	X25519Kyber512Draft00 = CurveID(0xfe30)
-	X25519Kyber768Draft00 = CurveID(0xfe31)
-	invalidCurveID        = CurveID(0)
-)
-
-func kemSchemeKeyToCurveID(s kem.Scheme) CurveID {
-	switch s.Name() {
-	case "Kyber512-X25519":
-		return X25519Kyber512Draft00
-	case "Kyber768-X25519":
-		return X25519Kyber768Draft00
-	default:
-		return invalidCurveID
-	}
-}
-
-// Extract CurveID from clientKeySharePrivate
-func clientKeySharePrivateCurveID(ks clientKeySharePrivate) CurveID {
-	switch v := ks.(type) {
-	case kem.PrivateKey:
-		ret := kemSchemeKeyToCurveID(v.Scheme())
-		if ret == invalidCurveID {
-			panic("cfkem: internal error: don't know CurveID for this KEM")
-		}
-		return ret
-	case ecdheParameters:
-		return v.CurveID()
-	default:
-		panic("cfkem: internal error: unknown clientKeySharePrivate")
-	}
-}
-
-// Returns scheme by CurveID if supported by Circl
-func curveIdToCirclScheme(id CurveID) kem.Scheme {
-	switch id {
-	case X25519Kyber512Draft00:
-		return hybrid.Kyber512X25519()
-	case X25519Kyber768Draft00:
-		return hybrid.Kyber768X25519()
-	}
-	return nil
-}
-
-// Generate a new shared secret and encapsulates it for the packed
-// public key in ppk using randomness from rnd.
-func encapsulateForKem(scheme kem.Scheme, rnd io.Reader, ppk []byte) (
-	ct, ss []byte, alert alert, err error,
-) {
-	pk, err := scheme.UnmarshalBinaryPublicKey(ppk)
-	if err != nil {
-		return nil, nil, alertIllegalParameter, fmt.Errorf("unpack pk: %w", err)
-	}
-	seed := make([]byte, scheme.EncapsulationSeedSize())
-	if _, err := io.ReadFull(rnd, seed); err != nil {
-		return nil, nil, alertInternalError, fmt.Errorf("random: %w", err)
-	}
-	ct, ss, err = scheme.EncapsulateDeterministically(pk, seed)
-	return ct, ss, alertIllegalParameter, err
-}
-
-// Generate a new keypair using randomness from rnd.
-func generateKemKeyPair(scheme kem.Scheme, rnd io.Reader) (
-	kem.PublicKey, kem.PrivateKey, error,
-) {
-	seed := make([]byte, scheme.SeedSize())
-	if _, err := io.ReadFull(rnd, seed); err != nil {
-		return nil, nil, err
-	}
-	pk, sk := scheme.DeriveKeyPair(seed)
-	return pk, sk, nil
-}

transport/cloudflaretls/cipher_suites.go

@@ -1,688 +0,0 @@
-// Copyright 2010 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package tls
-
-import (
-	"crypto"
-	"crypto/aes"
-	"crypto/cipher"
-	"crypto/des"
-	"crypto/hmac"
-	"crypto/rc4"
-	"crypto/sha1"
-	"crypto/sha256"
-	"fmt"
-	"hash"
-	"runtime"
-
-	"golang.org/x/crypto/chacha20poly1305"
-	"golang.org/x/sys/cpu"
-)
-
-// CipherSuite is a TLS cipher suite. Note that most functions in this package
-// accept and expose cipher suite IDs instead of this type.
-type CipherSuite struct {
-	ID   uint16
-	Name string
-
-	// Supported versions is the list of TLS protocol versions that can
-	// negotiate this cipher suite.
-	SupportedVersions []uint16
-
-	// Insecure is true if the cipher suite has known security issues
-	// due to its primitives, design, or implementation.
-	Insecure bool
-}
-
-var (
-	supportedUpToTLS12 = []uint16{VersionTLS10, VersionTLS11, VersionTLS12}
-	supportedOnlyTLS12 = []uint16{VersionTLS12}
-	supportedOnlyTLS13 = []uint16{VersionTLS13}
-)
-
-// CipherSuites returns a list of cipher suites currently implemented by this
-// package, excluding those with security issues, which are returned by
-// InsecureCipherSuites.
-//
-// The list is sorted by ID. Note that the default cipher suites selected by
-// this package might depend on logic that can't be captured by a static list,
-// and might not match those returned by this function.
-func CipherSuites() []*CipherSuite {
-	return []*CipherSuite{
-		{TLS_RSA_WITH_AES_128_CBC_SHA, "TLS_RSA_WITH_AES_128_CBC_SHA", supportedUpToTLS12, false},
-		{TLS_RSA_WITH_AES_256_CBC_SHA, "TLS_RSA_WITH_AES_256_CBC_SHA", supportedUpToTLS12, false},
-		{TLS_RSA_WITH_AES_128_GCM_SHA256, "TLS_RSA_WITH_AES_128_GCM_SHA256", supportedOnlyTLS12, false},
-		{TLS_RSA_WITH_AES_256_GCM_SHA384, "TLS_RSA_WITH_AES_256_GCM_SHA384", supportedOnlyTLS12, false},
-
-		{TLS_AES_128_GCM_SHA256, "TLS_AES_128_GCM_SHA256", supportedOnlyTLS13, false},
-		{TLS_AES_256_GCM_SHA384, "TLS_AES_256_GCM_SHA384", supportedOnlyTLS13, false},
-		{TLS_CHACHA20_POLY1305_SHA256, "TLS_CHACHA20_POLY1305_SHA256", supportedOnlyTLS13, false},
-
-		{TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, "TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA", supportedUpToTLS12, false},
-		{TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA, "TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA", supportedUpToTLS12, false},
-		{TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA", supportedUpToTLS12, false},
-		{TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA, "TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA", supportedUpToTLS12, false},
-		{TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256", supportedOnlyTLS12, false},
-		{TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384, "TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384", supportedOnlyTLS12, false},
-		{TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256, "TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256", supportedOnlyTLS12, false},
-		{TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384, "TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384", supportedOnlyTLS12, false},
-		{TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256, "TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256", supportedOnlyTLS12, false},
-		{TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256, "TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256", supportedOnlyTLS12, false},
-	}
-}
-
-// InsecureCipherSuites returns a list of cipher suites currently implemented by
-// this package and which have security issues.
-//
-// Most applications should not use the cipher suites in this list, and should
-// only use those returned by CipherSuites.
-func InsecureCipherSuites() []*CipherSuite {
-	// This list includes RC4, CBC_SHA256, and 3DES cipher suites. See
-	// cipherSuitesPreferenceOrder for details.
-	return []*CipherSuite{
-		{TLS_RSA_WITH_RC4_128_SHA, "TLS_RSA_WITH_RC4_128_SHA", supportedUpToTLS12, true},
-		{TLS_RSA_WITH_3DES_EDE_CBC_SHA, "TLS_RSA_WITH_3DES_EDE_CBC_SHA", supportedUpToTLS12, true},
-		{TLS_RSA_WITH_AES_128_CBC_SHA256, "TLS_RSA_WITH_AES_128_CBC_SHA256", supportedOnlyTLS12, true},
-		{TLS_ECDHE_ECDSA_WITH_RC4_128_SHA, "TLS_ECDHE_ECDSA_WITH_RC4_128_SHA", supportedUpToTLS12, true},
-		{TLS_ECDHE_RSA_WITH_RC4_128_SHA, "TLS_ECDHE_RSA_WITH_RC4_128_SHA", supportedUpToTLS12, true},
-		{TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA, "TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA", supportedUpToTLS12, true},
-		{TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256, "TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256", supportedOnlyTLS12, true},
-		{TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256, "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256", supportedOnlyTLS12, true},
-	}
-}
-
-// CipherSuiteName returns the standard name for the passed cipher suite ID
-// (e.g. "TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256"), or a fallback representation
-// of the ID value if the cipher suite is not implemented by this package.
-func CipherSuiteName(id uint16) string {
-	for _, c := range CipherSuites() {
-		if c.ID == id {
-			return c.Name
-		}
-	}
-	for _, c := range InsecureCipherSuites() {
-		if c.ID == id {
-			return c.Name
-		}
-	}
-	return fmt.Sprintf("0x%04X", id)
-}
-
-const (
-	// suiteECDHE indicates that the cipher suite involves elliptic curve
-	// Diffie-Hellman. This means that it should only be selected when the
-	// client indicates that it supports ECC with a curve and point format
-	// that we're happy with.
-	suiteECDHE = 1 << iota
-	// suiteECSign indicates that the cipher suite involves an ECDSA or
-	// EdDSA signature and therefore may only be selected when the server's
-	// certificate is ECDSA or EdDSA. If this is not set then the cipher suite
-	// is RSA based.
-	suiteECSign
-	// suiteTLS12 indicates that the cipher suite should only be advertised
-	// and accepted when using TLS 1.2.
-	suiteTLS12
-	// suiteSHA384 indicates that the cipher suite uses SHA384 as the
-	// handshake hash.
-	suiteSHA384
-)
-
-// A cipherSuite is a TLS 1.0–1.2 cipher suite, and defines the key exchange
-// mechanism, as well as the cipher+MAC pair or the AEAD.
-type cipherSuite struct {
-	id uint16
-	// the lengths, in bytes, of the key material needed for each component.
-	keyLen int
-	macLen int
-	ivLen  int
-	ka     func(version uint16) keyAgreement
-	// flags is a bitmask of the suite* values, above.
-	flags  int
-	cipher func(key, iv []byte, isRead bool) any
-	mac    func(key []byte) hash.Hash
-	aead   func(key, fixedNonce []byte) aead
-}
-
-var cipherSuites = []*cipherSuite{ // TODO: replace with a map, since the order doesn't matter.
-	{TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305, 32, 0, 12, ecdheRSAKA, suiteECDHE | suiteTLS12, nil, nil, aeadChaCha20Poly1305},
-	{TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305, 32, 0, 12, ecdheECDSAKA, suiteECDHE | suiteECSign | suiteTLS12, nil, nil, aeadChaCha20Poly1305},
-	{TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256, 16, 0, 4, ecdheRSAKA, suiteECDHE | suiteTLS12, nil, nil, aeadAESGCM},
-	{TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, 16, 0, 4, ecdheECDSAKA, suiteECDHE | suiteECSign | suiteTLS12, nil, nil, aeadAESGCM},
-	{TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384, 32, 0, 4, ecdheRSAKA, suiteECDHE | suiteTLS12 | suiteSHA384, nil, nil, aeadAESGCM},
-	{TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384, 32, 0, 4, ecdheECDSAKA, suiteECDHE | suiteECSign | suiteTLS12 | suiteSHA384, nil, nil, aeadAESGCM},
-	{TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256, 16, 32, 16, ecdheRSAKA, suiteECDHE | suiteTLS12, cipherAES, macSHA256, nil},
-	{TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA, 16, 20, 16, ecdheRSAKA, suiteECDHE, cipherAES, macSHA1, nil},
-	{TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256, 16, 32, 16, ecdheECDSAKA, suiteECDHE | suiteECSign | suiteTLS12, cipherAES, macSHA256, nil},
-	{TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, 16, 20, 16, ecdheECDSAKA, suiteECDHE | suiteECSign, cipherAES, macSHA1, nil},
-	{TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA, 32, 20, 16, ecdheRSAKA, suiteECDHE, cipherAES, macSHA1, nil},
-	{TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA, 32, 20, 16, ecdheECDSAKA, suiteECDHE | suiteECSign, cipherAES, macSHA1, nil},
-	{TLS_RSA_WITH_AES_128_GCM_SHA256, 16, 0, 4, rsaKA, suiteTLS12, nil, nil, aeadAESGCM},
-	{TLS_RSA_WITH_AES_256_GCM_SHA384, 32, 0, 4, rsaKA, suiteTLS12 | suiteSHA384, nil, nil, aeadAESGCM},
-	{TLS_RSA_WITH_AES_128_CBC_SHA256, 16, 32, 16, rsaKA, suiteTLS12, cipherAES, macSHA256, nil},
-	{TLS_RSA_WITH_AES_128_CBC_SHA, 16, 20, 16, rsaKA, 0, cipherAES, macSHA1, nil},
-	{TLS_RSA_WITH_AES_256_CBC_SHA, 32, 20, 16, rsaKA, 0, cipherAES, macSHA1, nil},
-	{TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA, 24, 20, 8, ecdheRSAKA, suiteECDHE, cipher3DES, macSHA1, nil},
-	{TLS_RSA_WITH_3DES_EDE_CBC_SHA, 24, 20, 8, rsaKA, 0, cipher3DES, macSHA1, nil},
-	{TLS_RSA_WITH_RC4_128_SHA, 16, 20, 0, rsaKA, 0, cipherRC4, macSHA1, nil},
-	{TLS_ECDHE_RSA_WITH_RC4_128_SHA, 16, 20, 0, ecdheRSAKA, suiteECDHE, cipherRC4, macSHA1, nil},
-	{TLS_ECDHE_ECDSA_WITH_RC4_128_SHA, 16, 20, 0, ecdheECDSAKA, suiteECDHE | suiteECSign, cipherRC4, macSHA1, nil},
-}
-
-// selectCipherSuite returns the first TLS 1.0–1.2 cipher suite from ids which
-// is also in supportedIDs and passes the ok filter.
-func selectCipherSuite(ids, supportedIDs []uint16, ok func(*cipherSuite) bool) *cipherSuite {
-	for _, id := range ids {
-		candidate := cipherSuiteByID(id)
-		if candidate == nil || !ok(candidate) {
-			continue
-		}
-
-		for _, suppID := range supportedIDs {
-			if id == suppID {
-				return candidate
-			}
-		}
-	}
-	return nil
-}
-
-// A cipherSuiteTLS13 defines only the pair of the AEAD algorithm and hash
-// algorithm to be used with HKDF. See RFC 8446, Appendix B.4.
-type cipherSuiteTLS13 struct {
-	id     uint16
-	keyLen int
-	aead   func(key, fixedNonce []byte) aead
-	hash   crypto.Hash
-}
-
-var cipherSuitesTLS13 = []*cipherSuiteTLS13{ // TODO: replace with a map.
-	{TLS_AES_128_GCM_SHA256, 16, aeadAESGCMTLS13, crypto.SHA256},
-	{TLS_CHACHA20_POLY1305_SHA256, 32, aeadChaCha20Poly1305, crypto.SHA256},
-	{TLS_AES_256_GCM_SHA384, 32, aeadAESGCMTLS13, crypto.SHA384},
-}
-
-// cipherSuitesPreferenceOrder is the order in which we'll select (on the
-// server) or advertise (on the client) TLS 1.0–1.2 cipher suites.
-//
-// Cipher suites are filtered but not reordered based on the application and
-// peer's preferences, meaning we'll never select a suite lower in this list if
-// any higher one is available. This makes it more defensible to keep weaker
-// cipher suites enabled, especially on the server side where we get the last
-// word, since there are no known downgrade attacks on cipher suites selection.
-//
-// The list is sorted by applying the following priority rules, stopping at the
-// first (most important) applicable one:
-//
-//   - Anything else comes before RC4
-//
-//     RC4 has practically exploitable biases. See https://www.rc4nomore.com.
-//
-//   - Anything else comes before CBC_SHA256
-//
-//     SHA-256 variants of the CBC ciphersuites don't implement any Lucky13
-//     countermeasures. See http://www.isg.rhul.ac.uk/tls/Lucky13.html and
-//     https://www.imperialviolet.org/2013/02/04/luckythirteen.html.
-//
-//   - Anything else comes before 3DES
-//
-//     3DES has 64-bit blocks, which makes it fundamentally susceptible to
-//     birthday attacks. See https://sweet32.info.
-//
-//   - ECDHE comes before anything else
-//
-//     Once we got the broken stuff out of the way, the most important
-//     property a cipher suite can have is forward secrecy. We don't
-//     implement FFDHE, so that means ECDHE.
-//
-//   - AEADs come before CBC ciphers
-//
-//     Even with Lucky13 countermeasures, MAC-then-Encrypt CBC cipher suites
-//     are fundamentally fragile, and suffered from an endless sequence of
-//     padding oracle attacks. See https://eprint.iacr.org/2015/1129,
-//     https://www.imperialviolet.org/2014/12/08/poodleagain.html, and
-//     https://blog.cloudflare.com/yet-another-padding-oracle-in-openssl-cbc-ciphersuites/.
-//
-//   - AES comes before ChaCha20
-//
-//     When AES hardware is available, AES-128-GCM and AES-256-GCM are faster
-//     than ChaCha20Poly1305.
-//
-//     When AES hardware is not available, AES-128-GCM is one or more of: much
-//     slower, way more complex, and less safe (because not constant time)
-//     than ChaCha20Poly1305.
-//
-//     We use this list if we think both peers have AES hardware, and
-//     cipherSuitesPreferenceOrderNoAES otherwise.
-//
-//   - AES-128 comes before AES-256
-//
-//     The only potential advantages of AES-256 are better multi-target
-//     margins, and hypothetical post-quantum properties. Neither apply to
-//     TLS, and AES-256 is slower due to its four extra rounds (which don't
-//     contribute to the advantages above).
-//
-//   - ECDSA comes before RSA
-//
-//     The relative order of ECDSA and RSA cipher suites doesn't matter,
-//     as they depend on the certificate. Pick one to get a stable order.
-var cipherSuitesPreferenceOrder = []uint16{
-	// AEADs w/ ECDHE
-	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
-	TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384, TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
-	TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305, TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,
-
-	// CBC w/ ECDHE
-	TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
-	TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA, TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
-
-	// AEADs w/o ECDHE
-	TLS_RSA_WITH_AES_128_GCM_SHA256,
-	TLS_RSA_WITH_AES_256_GCM_SHA384,
-
-	// CBC w/o ECDHE
-	TLS_RSA_WITH_AES_128_CBC_SHA,
-	TLS_RSA_WITH_AES_256_CBC_SHA,
-
-	// 3DES
-	TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,
-	TLS_RSA_WITH_3DES_EDE_CBC_SHA,
-
-	// CBC_SHA256
-	TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,
-	TLS_RSA_WITH_AES_128_CBC_SHA256,
-
-	// RC4
-	TLS_ECDHE_ECDSA_WITH_RC4_128_SHA, TLS_ECDHE_RSA_WITH_RC4_128_SHA,
-	TLS_RSA_WITH_RC4_128_SHA,
-}
-
-var cipherSuitesPreferenceOrderNoAES = []uint16{
-	// ChaCha20Poly1305
-	TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305, TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,
-
-	// AES-GCM w/ ECDHE
-	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256, TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
-	TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384, TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
-
-	// The rest of cipherSuitesPreferenceOrder.
-	TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
-	TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA, TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
-	TLS_RSA_WITH_AES_128_GCM_SHA256,
-	TLS_RSA_WITH_AES_256_GCM_SHA384,
-	TLS_RSA_WITH_AES_128_CBC_SHA,
-	TLS_RSA_WITH_AES_256_CBC_SHA,
-	TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,
-	TLS_RSA_WITH_3DES_EDE_CBC_SHA,
-	TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,
-	TLS_RSA_WITH_AES_128_CBC_SHA256,
-	TLS_ECDHE_ECDSA_WITH_RC4_128_SHA, TLS_ECDHE_RSA_WITH_RC4_128_SHA,
-	TLS_RSA_WITH_RC4_128_SHA,
-}
-
-// disabledCipherSuites are not used unless explicitly listed in
-// Config.CipherSuites. They MUST be at the end of cipherSuitesPreferenceOrder.
-var disabledCipherSuites = []uint16{
-	// CBC_SHA256
-	TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,
-	TLS_RSA_WITH_AES_128_CBC_SHA256,
-
-	// RC4
-	TLS_ECDHE_ECDSA_WITH_RC4_128_SHA, TLS_ECDHE_RSA_WITH_RC4_128_SHA,
-	TLS_RSA_WITH_RC4_128_SHA,
-}
-
-var (
-	defaultCipherSuitesLen = len(cipherSuitesPreferenceOrder) - len(disabledCipherSuites)
-	defaultCipherSuites    = cipherSuitesPreferenceOrder[:defaultCipherSuitesLen]
-)
-
-// defaultCipherSuitesTLS13 is also the preference order, since there are no
-// disabled by default TLS 1.3 cipher suites. The same AES vs ChaCha20 logic as
-// cipherSuitesPreferenceOrder applies.
-var defaultCipherSuitesTLS13 = []uint16{
-	TLS_AES_128_GCM_SHA256,
-	TLS_AES_256_GCM_SHA384,
-	TLS_CHACHA20_POLY1305_SHA256,
-}
-
-var defaultCipherSuitesTLS13NoAES = []uint16{
-	TLS_CHACHA20_POLY1305_SHA256,
-	TLS_AES_128_GCM_SHA256,
-	TLS_AES_256_GCM_SHA384,
-}
-
-var (
-	hasGCMAsmAMD64 = cpu.X86.HasAES && cpu.X86.HasPCLMULQDQ
-	hasGCMAsmARM64 = cpu.ARM64.HasAES && cpu.ARM64.HasPMULL
-	// Keep in sync with crypto/aes/cipher_s390x.go.
-	hasGCMAsmS390X = cpu.S390X.HasAES && cpu.S390X.HasAESCBC && cpu.S390X.HasAESCTR &&
-		(cpu.S390X.HasGHASH || cpu.S390X.HasAESGCM)
-
-	hasAESGCMHardwareSupport = runtime.GOARCH == "amd64" && hasGCMAsmAMD64 ||
-		runtime.GOARCH == "arm64" && hasGCMAsmARM64 ||
-		runtime.GOARCH == "s390x" && hasGCMAsmS390X
-)
-
-var aesgcmCiphers = map[uint16]bool{
-	// TLS 1.2
-	TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256:   true,
-	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384:   true,
-	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256: true,
-	TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384: true,
-	// TLS 1.3
-	TLS_AES_128_GCM_SHA256: true,
-	TLS_AES_256_GCM_SHA384: true,
-}
-
-var nonAESGCMAEADCiphers = map[uint16]bool{
-	// TLS 1.2
-	TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305:   true,
-	TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305: true,
-	// TLS 1.3
-	TLS_CHACHA20_POLY1305_SHA256: true,
-}
-
-// aesgcmPreferred returns whether the first known cipher in the preference list
-// is an AES-GCM cipher, implying the peer has hardware support for it.
-func aesgcmPreferred(ciphers []uint16) bool {
-	for _, cID := range ciphers {
-		if c := cipherSuiteByID(cID); c != nil {
-			return aesgcmCiphers[cID]
-		}
-		if c := cipherSuiteTLS13ByID(cID); c != nil {
-			return aesgcmCiphers[cID]
-		}
-	}
-	return false
-}
-
-func cipherRC4(key, iv []byte, isRead bool) any {
-	cipher, _ := rc4.NewCipher(key)
-	return cipher
-}
-
-func cipher3DES(key, iv []byte, isRead bool) any {
-	block, _ := des.NewTripleDESCipher(key)
-	if isRead {
-		return cipher.NewCBCDecrypter(block, iv)
-	}
-	return cipher.NewCBCEncrypter(block, iv)
-}
-
-func cipherAES(key, iv []byte, isRead bool) any {
-	block, _ := aes.NewCipher(key)
-	if isRead {
-		return cipher.NewCBCDecrypter(block, iv)
-	}
-	return cipher.NewCBCEncrypter(block, iv)
-}
-
-// macSHA1 returns a SHA-1 based constant time MAC.
-func macSHA1(key []byte) hash.Hash {
-	return hmac.New(newConstantTimeHash(sha1.New), key)
-}
-
-// macSHA256 returns a SHA-256 based MAC. This is only supported in TLS 1.2 and
-// is currently only used in disabled-by-default cipher suites.
-func macSHA256(key []byte) hash.Hash {
-	return hmac.New(sha256.New, key)
-}
-
-type aead interface {
-	cipher.AEAD
-
-	// explicitNonceLen returns the number of bytes of explicit nonce
-	// included in each record. This is eight for older AEADs and
-	// zero for modern ones.
-	explicitNonceLen() int
-}
-
-const (
-	aeadNonceLength   = 12
-	noncePrefixLength = 4
-)
-
-// prefixNonceAEAD wraps an AEAD and prefixes a fixed portion of the nonce to
-// each call.
-type prefixNonceAEAD struct {
-	// nonce contains the fixed part of the nonce in the first four bytes.
-	nonce [aeadNonceLength]byte
-	aead  cipher.AEAD
-}
-
-func (f *prefixNonceAEAD) NonceSize() int        { return aeadNonceLength - noncePrefixLength }
-func (f *prefixNonceAEAD) Overhead() int         { return f.aead.Overhead() }
-func (f *prefixNonceAEAD) explicitNonceLen() int { return f.NonceSize() }
-
-func (f *prefixNonceAEAD) Seal(out, nonce, plaintext, additionalData []byte) []byte {
-	copy(f.nonce[4:], nonce)
-	return f.aead.Seal(out, f.nonce[:], plaintext, additionalData)
-}
-
-func (f *prefixNonceAEAD) Open(out, nonce, ciphertext, additionalData []byte) ([]byte, error) {
-	copy(f.nonce[4:], nonce)
-	return f.aead.Open(out, f.nonce[:], ciphertext, additionalData)
-}
-
-// xoredNonceAEAD wraps an AEAD by XORing in a fixed pattern to the nonce
-// before each call.
-type xorNonceAEAD struct {
-	nonceMask [aeadNonceLength]byte
-	aead      cipher.AEAD
-}
-
-func (f *xorNonceAEAD) NonceSize() int        { return 8 } // 64-bit sequence number
-func (f *xorNonceAEAD) Overhead() int         { return f.aead.Overhead() }
-func (f *xorNonceAEAD) explicitNonceLen() int { return 0 }
-
-func (f *xorNonceAEAD) Seal(out, nonce, plaintext, additionalData []byte) []byte {
-	for i, b := range nonce {
-		f.nonceMask[4+i] ^= b
-	}
-	result := f.aead.Seal(out, f.nonceMask[:], plaintext, additionalData)
-	for i, b := range nonce {
-		f.nonceMask[4+i] ^= b
-	}
-
-	return result
-}
-
-func (f *xorNonceAEAD) Open(out, nonce, ciphertext, additionalData []byte) ([]byte, error) {
-	for i, b := range nonce {
-		f.nonceMask[4+i] ^= b
-	}
-	result, err := f.aead.Open(out, f.nonceMask[:], ciphertext, additionalData)
-	for i, b := range nonce {
-		f.nonceMask[4+i] ^= b
-	}
-
-	return result, err
-}
-
-func aeadAESGCM(key, noncePrefix []byte) aead {
-	if len(noncePrefix) != noncePrefixLength {
-		panic("tls: internal error: wrong nonce length")
-	}
-	aes, err := aes.NewCipher(key)
-	if err != nil {
-		panic(err)
-	}
-	aead, err := cipher.NewGCM(aes)
-	if err != nil {
-		panic(err)
-	}
-
-	ret := &prefixNonceAEAD{aead: aead}
-	copy(ret.nonce[:], noncePrefix)
-	return ret
-}
-
-func aeadAESGCMTLS13(key, nonceMask []byte) aead {
-	if len(nonceMask) != aeadNonceLength {
-		panic("tls: internal error: wrong nonce length")
-	}
-	aes, err := aes.NewCipher(key)
-	if err != nil {
-		panic(err)
-	}
-	aead, err := cipher.NewGCM(aes)
-	if err != nil {
-		panic(err)
-	}
-
-	ret := &xorNonceAEAD{aead: aead}
-	copy(ret.nonceMask[:], nonceMask)
-	return ret
-}
-
-func aeadChaCha20Poly1305(key, nonceMask []byte) aead {
-	if len(nonceMask) != aeadNonceLength {
-		panic("tls: internal error: wrong nonce length")
-	}
-	aead, err := chacha20poly1305.New(key)
-	if err != nil {
-		panic(err)
-	}
-
-	ret := &xorNonceAEAD{aead: aead}
-	copy(ret.nonceMask[:], nonceMask)
-	return ret
-}
-
-type constantTimeHash interface {
-	hash.Hash
-	ConstantTimeSum(b []byte) []byte
-}
-
-// cthWrapper wraps any hash.Hash that implements ConstantTimeSum, and replaces
-// with that all calls to Sum. It's used to obtain a ConstantTimeSum-based HMAC.
-type cthWrapper struct {
-	h constantTimeHash
-}
-
-func (c *cthWrapper) Size() int                   { return c.h.Size() }
-func (c *cthWrapper) BlockSize() int              { return c.h.BlockSize() }
-func (c *cthWrapper) Reset()                      { c.h.Reset() }
-func (c *cthWrapper) Write(p []byte) (int, error) { return c.h.Write(p) }
-func (c *cthWrapper) Sum(b []byte) []byte         { return c.h.ConstantTimeSum(b) }
-
-func newConstantTimeHash(h func() hash.Hash) func() hash.Hash {
-	return func() hash.Hash {
-		return &cthWrapper{h().(constantTimeHash)}
-	}
-}
-
-// tls10MAC implements the TLS 1.0 MAC function. RFC 2246, Section 6.2.3.
-func tls10MAC(h hash.Hash, out, seq, header, data, extra []byte) []byte {
-	h.Reset()
-	h.Write(seq)
-	h.Write(header)
-	h.Write(data)
-	res := h.Sum(out)
-	if extra != nil {
-		h.Write(extra)
-	}
-	return res
-}
-
-func rsaKA(version uint16) keyAgreement {
-	return rsaKeyAgreement{}
-}
-
-func ecdheECDSAKA(version uint16) keyAgreement {
-	return &ecdheKeyAgreement{
-		isRSA:   false,
-		version: version,
-	}
-}
-
-func ecdheRSAKA(version uint16) keyAgreement {
-	return &ecdheKeyAgreement{
-		isRSA:   true,
-		version: version,
-	}
-}
-
-// mutualCipherSuite returns a cipherSuite given a list of supported
-// ciphersuites and the id requested by the peer.
-func mutualCipherSuite(have []uint16, want uint16) *cipherSuite {
-	for _, id := range have {
-		if id == want {
-			return cipherSuiteByID(id)
-		}
-	}
-	return nil
-}
-
-func cipherSuiteByID(id uint16) *cipherSuite {
-	for _, cipherSuite := range cipherSuites {
-		if cipherSuite.id == id {
-			return cipherSuite
-		}
-	}
-	return nil
-}
-
-func mutualCipherSuiteTLS13(have []uint16, want uint16) *cipherSuiteTLS13 {
-	for _, id := range have {
-		if id == want {
-			return cipherSuiteTLS13ByID(id)
-		}
-	}
-	return nil
-}
-
-func cipherSuiteTLS13ByID(id uint16) *cipherSuiteTLS13 {
-	for _, cipherSuite := range cipherSuitesTLS13 {
-		if cipherSuite.id == id {
-			return cipherSuite
-		}
-	}
-	return nil
-}
-
-// A list of cipher suite IDs that are, or have been, implemented by this
-// package.
-//
-// See https://www.iana.org/assignments/tls-parameters/tls-parameters.xml
-const (
-	// TLS 1.0 - 1.2 cipher suites.
-	TLS_RSA_WITH_RC4_128_SHA                      uint16 = 0x0005
-	TLS_RSA_WITH_3DES_EDE_CBC_SHA                 uint16 = 0x000a
-	TLS_RSA_WITH_AES_128_CBC_SHA                  uint16 = 0x002f
-	TLS_RSA_WITH_AES_256_CBC_SHA                  uint16 = 0x0035
-	TLS_RSA_WITH_AES_128_CBC_SHA256               uint16 = 0x003c
-	TLS_RSA_WITH_AES_128_GCM_SHA256               uint16 = 0x009c
-	TLS_RSA_WITH_AES_256_GCM_SHA384               uint16 = 0x009d
-	TLS_ECDHE_ECDSA_WITH_RC4_128_SHA              uint16 = 0xc007
-	TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA          uint16 = 0xc009
-	TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA          uint16 = 0xc00a
-	TLS_ECDHE_RSA_WITH_RC4_128_SHA                uint16 = 0xc011
-	TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA           uint16 = 0xc012
-	TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA            uint16 = 0xc013
-	TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA            uint16 = 0xc014
-	TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256       uint16 = 0xc023
-	TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256         uint16 = 0xc027
-	TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256         uint16 = 0xc02f
-	TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256       uint16 = 0xc02b
-	TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384         uint16 = 0xc030
-	TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384       uint16 = 0xc02c
-	TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256   uint16 = 0xcca8
-	TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 uint16 = 0xcca9
-
-	// TLS 1.3 cipher suites.
-	TLS_AES_128_GCM_SHA256       uint16 = 0x1301
-	TLS_AES_256_GCM_SHA384       uint16 = 0x1302
-	TLS_CHACHA20_POLY1305_SHA256 uint16 = 0x1303
-
-	// TLS_FALLBACK_SCSV isn't a standard cipher suite but an indicator
-	// that the client is doing version fallback. See RFC 7507.
-	TLS_FALLBACK_SCSV uint16 = 0x5600
-
-	// Legacy names for the corresponding cipher suites with the correct _SHA256
-	// suffix, retained for backward compatibility.
-	TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305   = TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256
-	TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305 = TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256
-)

transport/cloudflaretls/common_string.go

@@ -1,116 +0,0 @@
-// Code generated by "stringer -type=SignatureScheme,CurveID,ClientAuthType -output=common_string.go"; DO NOT EDIT.
-
-package tls
-
-import "strconv"
-
-func _() {
-	// An "invalid array index" compiler error signifies that the constant values have changed.
-	// Re-run the stringer command to generate them again.
-	var x [1]struct{}
-	_ = x[PKCS1WithSHA256-1025]
-	_ = x[PKCS1WithSHA384-1281]
-	_ = x[PKCS1WithSHA512-1537]
-	_ = x[PSSWithSHA256-2052]
-	_ = x[PSSWithSHA384-2053]
-	_ = x[PSSWithSHA512-2054]
-	_ = x[ECDSAWithP256AndSHA256-1027]
-	_ = x[ECDSAWithP384AndSHA384-1283]
-	_ = x[ECDSAWithP521AndSHA512-1539]
-	_ = x[Ed25519-2055]
-	_ = x[PKCS1WithSHA1-513]
-	_ = x[ECDSAWithSHA1-515]
-}
-
-const (
-	_SignatureScheme_name_0 = "PKCS1WithSHA1"
-	_SignatureScheme_name_1 = "ECDSAWithSHA1"
-	_SignatureScheme_name_2 = "PKCS1WithSHA256"
-	_SignatureScheme_name_3 = "ECDSAWithP256AndSHA256"
-	_SignatureScheme_name_4 = "PKCS1WithSHA384"
-	_SignatureScheme_name_5 = "ECDSAWithP384AndSHA384"
-	_SignatureScheme_name_6 = "PKCS1WithSHA512"
-	_SignatureScheme_name_7 = "ECDSAWithP521AndSHA512"
-	_SignatureScheme_name_8 = "PSSWithSHA256PSSWithSHA384PSSWithSHA512Ed25519"
-)
-
-var (
-	_SignatureScheme_index_8 = [...]uint8{0, 13, 26, 39, 46}
-)
-
-func (i SignatureScheme) String() string {
-	switch {
-	case i == 513:
-		return _SignatureScheme_name_0
-	case i == 515:
-		return _SignatureScheme_name_1
-	case i == 1025:
-		return _SignatureScheme_name_2
-	case i == 1027:
-		return _SignatureScheme_name_3
-	case i == 1281:
-		return _SignatureScheme_name_4
-	case i == 1283:
-		return _SignatureScheme_name_5
-	case i == 1537:
-		return _SignatureScheme_name_6
-	case i == 1539:
-		return _SignatureScheme_name_7
-	case 2052 <= i && i <= 2055:
-		i -= 2052
-		return _SignatureScheme_name_8[_SignatureScheme_index_8[i]:_SignatureScheme_index_8[i+1]]
-	default:
-		return "SignatureScheme(" + strconv.FormatInt(int64(i), 10) + ")"
-	}
-}
-func _() {
-	// An "invalid array index" compiler error signifies that the constant values have changed.
-	// Re-run the stringer command to generate them again.
-	var x [1]struct{}
-	_ = x[CurveP256-23]
-	_ = x[CurveP384-24]
-	_ = x[CurveP521-25]
-	_ = x[X25519-29]
-}
-
-const (
-	_CurveID_name_0 = "CurveP256CurveP384CurveP521"
-	_CurveID_name_1 = "X25519"
-)
-
-var (
-	_CurveID_index_0 = [...]uint8{0, 9, 18, 27}
-)
-
-func (i CurveID) String() string {
-	switch {
-	case 23 <= i && i <= 25:
-		i -= 23
-		return _CurveID_name_0[_CurveID_index_0[i]:_CurveID_index_0[i+1]]
-	case i == 29:
-		return _CurveID_name_1
-	default:
-		return "CurveID(" + strconv.FormatInt(int64(i), 10) + ")"
-	}
-}
-func _() {
-	// An "invalid array index" compiler error signifies that the constant values have changed.
-	// Re-run the stringer command to generate them again.
-	var x [1]struct{}
-	_ = x[NoClientCert-0]
-	_ = x[RequestClientCert-1]
-	_ = x[RequireAnyClientCert-2]
-	_ = x[VerifyClientCertIfGiven-3]
-	_ = x[RequireAndVerifyClientCert-4]
-}
-
-const _ClientAuthType_name = "NoClientCertRequestClientCertRequireAnyClientCertVerifyClientCertIfGivenRequireAndVerifyClientCert"
-
-var _ClientAuthType_index = [...]uint8{0, 12, 29, 49, 72, 98}
-
-func (i ClientAuthType) String() string {
-	if i < 0 || i >= ClientAuthType(len(_ClientAuthType_index)-1) {
-		return "ClientAuthType(" + strconv.FormatInt(int64(i), 10) + ")"
-	}
-	return _ClientAuthType_name[_ClientAuthType_index[i]:_ClientAuthType_index[i+1]]
-}

transport/cloudflaretls/delegated_credentials.go

@@ -1,550 +0,0 @@
-// Copyright 2020-2021 Cloudflare, Inc. All rights reserved. Use of this source code
-// is governed by a BSD-style license that can be found in the LICENSE file.
-
-package tls
-
-// Delegated Credentials for TLS
-// (https://tools.ietf.org/html/draft-ietf-tls-subcerts) is an IETF Internet
-// draft and proposed TLS extension. If the client or server supports this
-// extension, then the server or client may use a "delegated credential" as the
-// signing key in the handshake. A delegated credential is a short lived
-// public/secret key pair delegated to the peer by an entity trusted by the
-// corresponding peer. This allows a reverse proxy to terminate a TLS connection
-// on behalf of the entity. Credentials can't be revoked; in order to
-// mitigate risk in case the reverse proxy is compromised, the credential is only
-// valid for a short time (days, hours, or even minutes).
-
-import (
-	"bytes"
-	"crypto"
-	"crypto/ecdsa"
-	"crypto/ed25519"
-	"crypto/elliptic"
-	"crypto/rand"
-	"crypto/rsa"
-	"crypto/x509"
-	"encoding/binary"
-	"errors"
-	"fmt"
-	"io"
-	"time"
-
-	"golang.org/x/crypto/cryptobyte"
-)
-
-const (
-	// In the absence of an application profile standard specifying otherwise,
-	// the maximum validity period is set to 7 days.
-	dcMaxTTLSeconds   = 60 * 60 * 24 * 7
-	dcMaxTTL          = time.Duration(dcMaxTTLSeconds * time.Second)
-	dcMaxPubLen       = (1 << 24) - 1 // Bytes
-	dcMaxSignatureLen = (1 << 16) - 1 // Bytes
-)
-
-const (
-	undefinedSignatureScheme SignatureScheme = 0x0000
-)
-
-var extensionDelegatedCredential = []int{1, 3, 6, 1, 4, 1, 44363, 44}
-
-// isValidForDelegation returns true if a certificate can be used for Delegated
-// Credentials.
-func isValidForDelegation(cert *x509.Certificate) bool {
-	// Check that the digitalSignature key usage is set.
-	// The certificate must contains the digitalSignature KeyUsage.
-	if (cert.KeyUsage & x509.KeyUsageDigitalSignature) == 0 {
-		return false
-	}
-
-	// Check that the certificate has the DelegationUsage extension and that
-	// it's marked as non-critical (See Section 4.2 of RFC5280).
-	for _, extension := range cert.Extensions {
-		if extension.Id.Equal(extensionDelegatedCredential) {
-			if extension.Critical {
-				return false
-			}
-			return true
-		}
-	}
-	return false
-}
-
-// isExpired returns true if the credential has expired. The end of the validity
-// interval is defined as the delegator certificate's notBefore field ('start')
-// plus dc.cred.validTime seconds. This function simply checks that the current time
-// ('now') is before the end of the validity interval.
-func (dc *DelegatedCredential) isExpired(start, now time.Time) bool {
-	end := start.Add(dc.cred.validTime)
-	return !now.Before(end)
-}
-
-// invalidTTL returns true if the credential's validity period is longer than the
-// maximum permitted. This is defined by the certificate's notBefore field
-// ('start') plus the dc.validTime, minus the current time ('now').
-func (dc *DelegatedCredential) invalidTTL(start, now time.Time) bool {
-	return dc.cred.validTime > (now.Sub(start) + dcMaxTTL).Round(time.Second)
-}
-
-// credential stores the public components of a Delegated Credential.
-type credential struct {
-	// The amount of time for which the credential is valid. Specifically, the
-	// the credential expires 'validTime' seconds after the 'notBefore' of the
-	// delegation certificate. The delegator shall not issue Delegated
-	// Credentials that are valid for more than 7 days from the current time.
-	//
-	// When this data structure is serialized, this value is converted to a
-	// uint32 representing the duration in seconds.
-	validTime time.Duration
-	// The signature scheme associated with the credential public key.
-	// This is expected to be the same as the CertificateVerify.algorithm
-	// sent by the client or server.
-	expCertVerfAlgo SignatureScheme
-	// The credential's public key.
-	publicKey crypto.PublicKey
-}
-
-// DelegatedCredential stores a Delegated Credential with the credential and its
-// signature.
-type DelegatedCredential struct {
-	// The serialized form of the Delegated Credential.
-	raw []byte
-
-	// Cred stores the public components of a Delegated Credential.
-	cred *credential
-
-	// The signature scheme used to sign the Delegated Credential.
-	algorithm SignatureScheme
-
-	// The Credential's delegation: a signature that binds the credential to
-	// the end-entity certificate's public key.
-	signature []byte
-}
-
-// marshalPublicKeyInfo returns a DER encoded PublicKeyInfo
-// from a Delegated Credential (as defined in the X.509 standard).
-// The following key types are currently supported: *ecdsa.PublicKey
-// and ed25519.PublicKey. Unsupported key types result in an error.
-// rsa.PublicKey is not supported as defined by the draft.
-func (cred *credential) marshalPublicKeyInfo() ([]byte, error) {
-	switch cred.expCertVerfAlgo {
-	case ECDSAWithP256AndSHA256,
-		ECDSAWithP384AndSHA384,
-		ECDSAWithP521AndSHA512,
-		Ed25519:
-		rawPub, err := x509.MarshalPKIXPublicKey(cred.publicKey)
-		if err != nil {
-			return nil, err
-		}
-
-		return rawPub, nil
-
-	default:
-		return nil, fmt.Errorf("tls: unsupported signature scheme: 0x%04x", cred.expCertVerfAlgo)
-	}
-}
-
-// marshal encodes the credential struct of the Delegated Credential.
-func (cred *credential) marshal() ([]byte, error) {
-	var b cryptobyte.Builder
-
-	b.AddUint32(uint32(cred.validTime / time.Second))
-	b.AddUint16(uint16(cred.expCertVerfAlgo))
-
-	// Encode the public key
-	rawPub, err := cred.marshalPublicKeyInfo()
-	if err != nil {
-		return nil, err
-	}
-	// Assert that the public key encoding is no longer than 2^24-1 bytes.
-	if len(rawPub) > dcMaxPubLen {
-		return nil, errors.New("tls: public key length exceeds 2^24-1 limit")
-	}
-
-	b.AddUint24(uint32(len(rawPub)))
-	b.AddBytes(rawPub)
-
-	raw := b.BytesOrPanic()
-	return raw, nil
-}
-
-// unmarshalCredential decodes serialized bytes and returns a credential, if possible.
-func unmarshalCredential(raw []byte) (*credential, error) {
-	if len(raw) < 10 {
-		return nil, errors.New("tls: Delegated Credential is not valid: invalid length")
-	}
-
-	s := cryptobyte.String(raw)
-	var t uint32
-	if !s.ReadUint32(&t) {
-		return nil, errors.New("tls: Delegated Credential is not valid")
-	}
-	validTime := time.Duration(t) * time.Second
-
-	var pubAlgo uint16
-	if !s.ReadUint16(&pubAlgo) {
-		return nil, errors.New("tls: Delegated Credential is not valid")
-	}
-	algo := SignatureScheme(pubAlgo)
-
-	var pubLen uint32
-	s.ReadUint24(&pubLen)
-
-	pubKey, err := x509.ParsePKIXPublicKey(s)
-	if err != nil {
-		return nil, err
-	}
-
-	return &credential{validTime, algo, pubKey}, nil
-}
-
-// getCredentialLen returns the number of bytes comprising the serialized
-// credential struct inside the Delegated Credential.
-func getCredentialLen(raw []byte) (int, error) {
-	if len(raw) < 10 {
-		return 0, errors.New("tls: Delegated Credential is not valid")
-	}
-
-	var read []byte
-	s := cryptobyte.String(raw)
-	s.ReadBytes(&read, 6)
-
-	var pubLen uint32
-	s.ReadUint24(&pubLen)
-	if !(pubLen > 0) {
-		return 0, errors.New("tls: Delegated Credential is not valid")
-	}
-
-	raw = raw[6:]
-	if len(raw) < int(pubLen) {
-		return 0, errors.New("tls: Delegated Credential is not valid")
-	}
-
-	return 9 + int(pubLen), nil
-}
-
-// getHash maps the SignatureScheme to its corresponding hash function.
-func getHash(scheme SignatureScheme) crypto.Hash {
-	switch scheme {
-	case ECDSAWithP256AndSHA256:
-		return crypto.SHA256
-	case ECDSAWithP384AndSHA384:
-		return crypto.SHA384
-	case ECDSAWithP521AndSHA512:
-		return crypto.SHA512
-	case Ed25519:
-		return directSigning
-	case PKCS1WithSHA256, PSSWithSHA256:
-		return crypto.SHA256
-	case PSSWithSHA384:
-		return crypto.SHA384
-	case PSSWithSHA512:
-		return crypto.SHA512
-	default:
-		return 0 // Unknown hash function
-	}
-}
-
-// getECDSACurve maps the SignatureScheme to its corresponding ecdsa elliptic.Curve.
-func getECDSACurve(scheme SignatureScheme) elliptic.Curve {
-	switch scheme {
-	case ECDSAWithP256AndSHA256:
-		return elliptic.P256()
-	case ECDSAWithP384AndSHA384:
-		return elliptic.P384()
-	case ECDSAWithP521AndSHA512:
-		return elliptic.P521()
-	default:
-		return nil
-	}
-}
-
-// prepareDelegationSignatureInput returns the message that the delegator is going to sign.
-func prepareDelegationSignatureInput(hash crypto.Hash, cred *credential, dCert []byte, algo SignatureScheme, isClient bool) ([]byte, error) {
-	header := make([]byte, 64)
-	for i := range header {
-		header[i] = 0x20
-	}
-
-	var context string
-	if !isClient {
-		context = "TLS, server delegated credentials\x00"
-	} else {
-		context = "TLS, client delegated credentials\x00"
-	}
-
-	rawCred, err := cred.marshal()
-	if err != nil {
-		return nil, err
-	}
-
-	var rawAlgo [2]byte
-	binary.BigEndian.PutUint16(rawAlgo[:], uint16(algo))
-
-	if hash == directSigning {
-		b := &bytes.Buffer{}
-		b.Write(header)
-		io.WriteString(b, context)
-		b.Write(dCert)
-		b.Write(rawCred)
-		b.Write(rawAlgo[:])
-		return b.Bytes(), nil
-	}
-
-	h := hash.New()
-	h.Write(header)
-	io.WriteString(h, context)
-	h.Write(dCert)
-	h.Write(rawCred)
-	h.Write(rawAlgo[:])
-	return h.Sum(nil), nil
-}
-
-// Extract the algorithm used to sign the Delegated Credential from the
-// end-entity (leaf) certificate.
-func getSignatureAlgorithm(cert *Certificate) (SignatureScheme, error) {
-	switch sk := cert.PrivateKey.(type) {
-	case *ecdsa.PrivateKey:
-		pk := sk.Public().(*ecdsa.PublicKey)
-		curveName := pk.Curve.Params().Name
-		certAlg := cert.Leaf.PublicKeyAlgorithm
-		if certAlg == x509.ECDSA && curveName == "P-256" {
-			return ECDSAWithP256AndSHA256, nil
-		} else if certAlg == x509.ECDSA && curveName == "P-384" {
-			return ECDSAWithP384AndSHA384, nil
-		} else if certAlg == x509.ECDSA && curveName == "P-521" {
-			return ECDSAWithP521AndSHA512, nil
-		} else {
-			return undefinedSignatureScheme, fmt.Errorf("using curve %s for %s is not supported", curveName, cert.Leaf.SignatureAlgorithm)
-		}
-	case ed25519.PrivateKey:
-		return Ed25519, nil
-	case *rsa.PrivateKey:
-		// If the certificate has the RSAEncryption OID there are a number of valid signature schemes that may sign the DC.
-		// In the absence of better information, we make a reasonable choice.
-		return PSSWithSHA256, nil
-	default:
-		return undefinedSignatureScheme, fmt.Errorf("tls: unsupported algorithm for signing Delegated Credential")
-	}
-}
-
-// NewDelegatedCredential creates a new Delegated Credential using 'cert' for
-// delegation, depending if the caller is the client or the server (defined by
-// 'isClient'). It generates a public/private key pair for the provided signature
-// algorithm ('pubAlgo') and it defines a validity interval (defined
-// by 'cert.Leaf.notBefore' and 'validTime'). It signs the Delegated Credential
-// using 'cert.PrivateKey'.
-func NewDelegatedCredential(cert *Certificate, pubAlgo SignatureScheme, validTime time.Duration, isClient bool) (*DelegatedCredential, crypto.PrivateKey, error) {
-	// The granularity of DC validity is seconds.
-	validTime = validTime.Round(time.Second)
-
-	// Parse the leaf certificate if needed.
-	var err error
-	if cert.Leaf == nil {
-		if len(cert.Certificate[0]) == 0 {
-			return nil, nil, errors.New("tls: missing leaf certificate for Delegated Credential")
-		}
-		cert.Leaf, err = x509.ParseCertificate(cert.Certificate[0])
-		if err != nil {
-			return nil, nil, err
-		}
-	}
-
-	// Check that the leaf certificate can be used for delegation.
-	if !isValidForDelegation(cert.Leaf) {
-		return nil, nil, errors.New("tls: certificate not authorized for delegation")
-	}
-
-	sigAlgo, err := getSignatureAlgorithm(cert)
-	if err != nil {
-		return nil, nil, err
-	}
-
-	// Generate the Delegated Credential key pair based on the provided scheme
-	var privK crypto.PrivateKey
-	var pubK crypto.PublicKey
-	switch pubAlgo {
-	case ECDSAWithP256AndSHA256,
-		ECDSAWithP384AndSHA384,
-		ECDSAWithP521AndSHA512:
-		privK, err = ecdsa.GenerateKey(getECDSACurve(pubAlgo), rand.Reader)
-		if err != nil {
-			return nil, nil, err
-		}
-		pubK = privK.(*ecdsa.PrivateKey).Public()
-	case Ed25519:
-		pubK, privK, err = ed25519.GenerateKey(rand.Reader)
-		if err != nil {
-			return nil, nil, err
-		}
-	default:
-		return nil, nil, fmt.Errorf("tls: unsupported algorithm for Delegated Credential: %s", pubAlgo)
-	}
-
-	// Prepare the credential for signing
-	hash := getHash(sigAlgo)
-	credential := &credential{validTime, pubAlgo, pubK}
-	values, err := prepareDelegationSignatureInput(hash, credential, cert.Leaf.Raw, sigAlgo, isClient)
-	if err != nil {
-		return nil, nil, err
-	}
-
-	var sig []byte
-	switch sk := cert.PrivateKey.(type) {
-	case *ecdsa.PrivateKey:
-		opts := crypto.SignerOpts(hash)
-		sig, err = sk.Sign(rand.Reader, values, opts)
-		if err != nil {
-			return nil, nil, err
-		}
-	case ed25519.PrivateKey:
-		opts := crypto.SignerOpts(hash)
-		sig, err = sk.Sign(rand.Reader, values, opts)
-		if err != nil {
-			return nil, nil, err
-		}
-	case *rsa.PrivateKey:
-		opts := &rsa.PSSOptions{
-			SaltLength: rsa.PSSSaltLengthEqualsHash,
-			Hash:       hash,
-		}
-		sig, err = rsa.SignPSS(rand.Reader, sk, hash, values, opts)
-		if err != nil {
-			return nil, nil, err
-		}
-	default:
-		return nil, nil, fmt.Errorf("tls: unsupported key type for Delegated Credential")
-	}
-
-	if len(sig) > dcMaxSignatureLen {
-		return nil, nil, errors.New("tls: unable to create a Delegated Credential")
-	}
-
-	return &DelegatedCredential{
-		cred:      credential,
-		algorithm: sigAlgo,
-		signature: sig,
-	}, privK, nil
-}
-
-// Validate validates the Delegated Credential by checking that the signature is
-// valid, that it hasn't expired, and that the TTL is valid. It also checks that
-// certificate can be used for delegation.
-func (dc *DelegatedCredential) Validate(cert *x509.Certificate, isClient bool, now time.Time, certVerifyMsg *certificateVerifyMsg) bool {
-	if dc.isExpired(cert.NotBefore, now) {
-		return false
-	}
-
-	if dc.invalidTTL(cert.NotBefore, now) {
-		return false
-	}
-
-	if dc.cred.expCertVerfAlgo != certVerifyMsg.signatureAlgorithm {
-		return false
-	}
-
-	if !isValidForDelegation(cert) {
-		return false
-	}
-
-	hash := getHash(dc.algorithm)
-	in, err := prepareDelegationSignatureInput(hash, dc.cred, cert.Raw, dc.algorithm, isClient)
-	if err != nil {
-		return false
-	}
-
-	switch dc.algorithm {
-	case ECDSAWithP256AndSHA256,
-		ECDSAWithP384AndSHA384,
-		ECDSAWithP521AndSHA512:
-		pk, ok := cert.PublicKey.(*ecdsa.PublicKey)
-		if !ok {
-			return false
-		}
-
-		return ecdsa.VerifyASN1(pk, in, dc.signature)
-	case Ed25519:
-		pk, ok := cert.PublicKey.(ed25519.PublicKey)
-		if !ok {
-			return false
-		}
-
-		return ed25519.Verify(pk, in, dc.signature)
-	case PSSWithSHA256,
-		PSSWithSHA384,
-		PSSWithSHA512:
-		pk, ok := cert.PublicKey.(*rsa.PublicKey)
-		if !ok {
-			return false
-		}
-		hash := getHash(dc.algorithm)
-		return rsa.VerifyPSS(pk, hash, in, dc.signature, nil) == nil
-	default:
-		return false
-	}
-}
-
-// Marshal encodes a DelegatedCredential structure. It also sets dc.Raw to that
-// encoding.
-func (dc *DelegatedCredential) Marshal() ([]byte, error) {
-	if len(dc.signature) > dcMaxSignatureLen {
-		return nil, errors.New("tls: delegated credential is not valid")
-	}
-	if len(dc.signature) == 0 {
-		return nil, errors.New("tls: delegated credential has no signature")
-	}
-
-	raw, err := dc.cred.marshal()
-	if err != nil {
-		return nil, err
-	}
-
-	var b cryptobyte.Builder
-	b.AddBytes(raw)
-	b.AddUint16(uint16(dc.algorithm))
-	b.AddUint16(uint16(len(dc.signature)))
-	b.AddBytes(dc.signature)
-
-	dc.raw = b.BytesOrPanic()
-	return dc.raw, nil
-}
-
-// UnmarshalDelegatedCredential decodes a DelegatedCredential structure.
-func UnmarshalDelegatedCredential(raw []byte) (*DelegatedCredential, error) {
-	rawCredentialLen, err := getCredentialLen(raw)
-	if err != nil {
-		return nil, err
-	}
-
-	credential, err := unmarshalCredential(raw[:rawCredentialLen])
-	if err != nil {
-		return nil, err
-	}
-
-	raw = raw[rawCredentialLen:]
-	if len(raw) < 4 {
-		return nil, errors.New("tls: Delegated Credential is not valid")
-	}
-
-	s := cryptobyte.String(raw)
-
-	var algo uint16
-	if !s.ReadUint16(&algo) {
-		return nil, errors.New("tls: Delegated Credential is not valid")
-	}
-
-	var rawSignatureLen uint16
-	if !s.ReadUint16(&rawSignatureLen) {
-		return nil, errors.New("tls: Delegated Credential is not valid")
-	}
-
-	var sig []byte
-	if !s.ReadBytes(&sig, int(rawSignatureLen)) {
-		return nil, errors.New("tls: Delegated Credential is not valid")
-	}
-
-	return &DelegatedCredential{
-		cred:      credential,
-		algorithm: SignatureScheme(algo),
-		signature: sig,
-	}, nil
-}

transport/cloudflaretls/ech_config.go

@@ -1,164 +0,0 @@
-// Copyright 2020 Cloudflare, Inc. All rights reserved. Use of this source code
-// is governed by a BSD-style license that can be found in the LICENSE file.
-
-package tls
-
-import (
-	"errors"
-	"fmt"
-	"io"
-
-	"github.com/cloudflare/circl/hpke"
-	"github.com/cloudflare/circl/kem"
-	"golang.org/x/crypto/cryptobyte"
-)
-
-// ECHConfig represents an ECH configuration.
-type ECHConfig struct {
-	pk  kem.PublicKey
-	raw []byte
-
-	// Parsed from raw
-	version           uint16
-	configId          uint8
-	rawPublicName     []byte
-	rawPublicKey      []byte
-	kemId             uint16
-	suites            []hpkeSymmetricCipherSuite
-	maxNameLen        uint8
-	ignoredExtensions []byte
-}
-
-// UnmarshalECHConfigs parses a sequence of ECH configurations.
-func UnmarshalECHConfigs(raw []byte) ([]ECHConfig, error) {
-	var (
-		err         error
-		config      ECHConfig
-		t, contents cryptobyte.String
-	)
-	configs := make([]ECHConfig, 0)
-	s := cryptobyte.String(raw)
-	if !s.ReadUint16LengthPrefixed(&t) || !s.Empty() {
-		return configs, errors.New("error parsing configs")
-	}
-	raw = raw[2:]
-ConfigsLoop:
-	for !t.Empty() {
-		l := len(t)
-		if !t.ReadUint16(&config.version) ||
-			!t.ReadUint16LengthPrefixed(&contents) {
-			return nil, errors.New("error parsing config")
-		}
-		n := l - len(t)
-		config.raw = raw[:n]
-		raw = raw[n:]
-
-		if config.version != extensionECH {
-			continue ConfigsLoop
-		}
-		if !readConfigContents(&contents, &config) {
-			return nil, errors.New("error parsing config contents")
-		}
-
-		kem := hpke.KEM(config.kemId)
-		if !kem.IsValid() {
-			continue ConfigsLoop
-		}
-		config.pk, err = kem.Scheme().UnmarshalBinaryPublicKey(config.rawPublicKey)
-		if err != nil {
-			return nil, fmt.Errorf("error parsing public key: %s", err)
-		}
-		configs = append(configs, config)
-	}
-	return configs, nil
-}
-
-func echMarshalConfigs(configs []ECHConfig) ([]byte, error) {
-	var b cryptobyte.Builder
-	b.AddUint16LengthPrefixed(func(b *cryptobyte.Builder) {
-		for _, config := range configs {
-			if config.raw == nil {
-				panic("config.raw not set")
-			}
-			b.AddBytes(config.raw)
-		}
-	})
-	return b.Bytes()
-}
-
-func readConfigContents(contents *cryptobyte.String, config *ECHConfig) bool {
-	var t cryptobyte.String
-	if !contents.ReadUint8(&config.configId) ||
-		!contents.ReadUint16(&config.kemId) ||
-		!contents.ReadUint16LengthPrefixed(&t) ||
-		!t.ReadBytes(&config.rawPublicKey, len(t)) ||
-		!contents.ReadUint16LengthPrefixed(&t) ||
-		len(t)%4 != 0 {
-		return false
-	}
-
-	config.suites = nil
-	for !t.Empty() {
-		var kdfId, aeadId uint16
-		if !t.ReadUint16(&kdfId) || !t.ReadUint16(&aeadId) {
-			// This indicates an internal bug.
-			panic("internal error while parsing contents.cipher_suites")
-		}
-		config.suites = append(config.suites, hpkeSymmetricCipherSuite{kdfId, aeadId})
-	}
-
-	if !contents.ReadUint8(&config.maxNameLen) ||
-		!contents.ReadUint8LengthPrefixed(&t) ||
-		!t.ReadBytes(&config.rawPublicName, len(t)) ||
-		!contents.ReadUint16LengthPrefixed(&t) ||
-		!t.ReadBytes(&config.ignoredExtensions, len(t)) ||
-		!contents.Empty() {
-		return false
-	}
-	return true
-}
-
-// setupSealer generates the client's HPKE context for use with the ECH
-// extension. It returns the context and corresponding encapsulated key.
-func (config *ECHConfig) setupSealer(rand io.Reader) (enc []byte, sealer hpke.Sealer, err error) {
-	if config.raw == nil {
-		panic("config.raw not set")
-	}
-	hpkeSuite, err := config.selectSuite()
-	if err != nil {
-		return nil, nil, err
-	}
-	info := append(append([]byte(echHpkeInfoSetup), 0), config.raw...)
-	sender, err := hpkeSuite.NewSender(config.pk, info)
-	if err != nil {
-		return nil, nil, err
-	}
-	return sender.Setup(rand)
-}
-
-// isPeerCipherSuiteSupported returns true if this configuration indicates
-// support for the given ciphersuite.
-func (config *ECHConfig) isPeerCipherSuiteSupported(suite hpkeSymmetricCipherSuite) bool {
-	for _, configSuite := range config.suites {
-		if suite == configSuite {
-			return true
-		}
-	}
-	return false
-}
-
-// selectSuite returns the first ciphersuite indicated by this
-// configuration that is supported by the caller.
-func (config *ECHConfig) selectSuite() (hpke.Suite, error) {
-	for _, suite := range config.suites {
-		hpkeSuite, err := hpkeAssembleSuite(
-			config.kemId,
-			suite.kdfId,
-			suite.aeadId,
-		)
-		if err == nil {
-			return hpkeSuite, nil
-		}
-	}
-	return hpke.Suite{}, errors.New("could not negotiate a ciphersuite")
-}

transport/cloudflaretls/ech_provider.go

@@ -1,302 +0,0 @@
-// Copyright 2020 Cloudflare, Inc. All rights reserved. Use of this source code
-// is governed by a BSD-style license that can be found in the LICENSE file.
-
-package tls
-
-import (
-	"errors"
-	"fmt"
-
-	"github.com/cloudflare/circl/hpke"
-	"github.com/cloudflare/circl/kem"
-	"golang.org/x/crypto/cryptobyte"
-)
-
-// ECHProvider specifies the interface of an ECH service provider that decrypts
-// the ECH payload on behalf of the client-facing server. It also defines the
-// set of acceptable ECH configurations.
-type ECHProvider interface {
-	// GetDecryptionContext attempts to construct the HPKE context used by the
-	// client-facing server for decryption. (See draft-irtf-cfrg-hpke-07,
-	// Section 5.2.)
-	//
-	// handle encodes the parameters of the client's "encrypted_client_hello"
-	// extension that are needed to construct the context. Since
-	// draft-ietf-tls-esni-10 these are the ECH cipher suite, the identity of
-	// the ECH configuration, and the encapsulated key.
-	//
-	// version is the version of ECH indicated by the client.
-	//
-	// res.Status == ECHProviderStatusSuccess indicates the call was successful
-	// and the caller may proceed. res.Context is set.
-	//
-	// res.Status == ECHProviderStatusReject indicates the caller must reject
-	// ECH. res.RetryConfigs may be set.
-	//
-	// res.Status == ECHProviderStatusAbort indicates the caller should abort
-	// the handshake.  Note that, in some cases, it's appropriate to reject
-	// rather than abort. In particular, aborting with "illegal_parameter" might
-	// "stick out". res.Alert and res.Error are set.
-	GetDecryptionContext(handle []byte, version uint16) (res ECHProviderResult)
-}
-
-// ECHProviderStatus is the status of the ECH provider's response.
-type ECHProviderStatus uint
-
-const (
-	ECHProviderSuccess ECHProviderStatus = 0
-	ECHProviderReject                    = 1
-	ECHProviderAbort                     = 2
-
-	errHPKEInvalidPublicKey = "hpke: invalid KEM public key"
-)
-
-// ECHProviderResult represents the result of invoking the ECH provider.
-type ECHProviderResult struct {
-	Status ECHProviderStatus
-
-	// Alert is the TLS alert sent by the caller when aborting the handshake.
-	Alert uint8
-
-	// Error is the error propagated by the caller when aborting the handshake.
-	Error error
-
-	// RetryConfigs is the sequence of ECH configs to offer to the client for
-	// retrying the handshake. This may be set in case of success or rejection.
-	RetryConfigs []byte
-
-	// Context is the server's HPKE context. This is set if ECH is not rejected
-	// by the provider and no error was reported. The data has the following
-	// format (in TLS syntax):
-	//
-	// enum { sealer(0), opener(1) } HpkeRole;
-	//
-	// struct {
-	//     HpkeRole role;
-	//     HpkeKemId kem_id;   // as defined in draft-irtf-cfrg-hpke-07
-	//     HpkeKdfId kdf_id;   // as defined in draft-irtf-cfrg-hpke-07
-	//     HpkeAeadId aead_id; // as defined in draft-irtf-cfrg-hpke-07
-	//     opaque exporter_secret<0..255>;
-	//     opaque key<0..255>;
-	//     opaque base_nonce<0..255>;
-	//     opaque seq<0..255>;
-	// } HpkeContext;
-	Context []byte
-}
-
-// EXP_ECHKeySet implements the ECHProvider interface for a sequence of ECH keys.
-//
-// NOTE: This API is EXPERIMENTAL and subject to change.
-type EXP_ECHKeySet struct {
-	// The serialized ECHConfigs, in order of the server's preference.
-	configs []byte
-
-	// Maps a configuration identifier to its secret key.
-	sk map[uint8]EXP_ECHKey
-}
-
-// EXP_NewECHKeySet constructs an EXP_ECHKeySet.
-func EXP_NewECHKeySet(keys []EXP_ECHKey) (*EXP_ECHKeySet, error) {
-	if len(keys) > 255 {
-		return nil, fmt.Errorf("tls: ech provider: unable to support more than 255 ECH configurations at once")
-	}
-
-	keySet := new(EXP_ECHKeySet)
-	keySet.sk = make(map[uint8]EXP_ECHKey)
-	configs := make([]byte, 0)
-	for _, key := range keys {
-		if _, ok := keySet.sk[key.config.configId]; ok {
-			return nil, fmt.Errorf("tls: ech provider: ECH config conflict for configId %d", key.config.configId)
-		}
-
-		keySet.sk[key.config.configId] = key
-		configs = append(configs, key.config.raw...)
-	}
-
-	var b cryptobyte.Builder
-	b.AddUint16LengthPrefixed(func(b *cryptobyte.Builder) {
-		b.AddBytes(configs)
-	})
-	keySet.configs = b.BytesOrPanic()
-
-	return keySet, nil
-}
-
-// GetDecryptionContext is required by the ECHProvider interface.
-func (keySet *EXP_ECHKeySet) GetDecryptionContext(rawHandle []byte, version uint16) (res ECHProviderResult) {
-	// Propagate retry configurations regardless of the result. The caller sends
-	// these to the clients only if it rejects.
-	res.RetryConfigs = keySet.configs
-
-	// Ensure we know how to proceed, i.e., the caller has indicated a supported
-	// version of ECH. Currently only draft-ietf-tls-esni-13 is supported.
-	if version != extensionECH {
-		res.Status = ECHProviderAbort
-		res.Alert = uint8(alertInternalError)
-		res.Error = errors.New("version not supported")
-		return // Abort
-	}
-
-	// Parse the handle.
-	s := cryptobyte.String(rawHandle)
-	handle := new(echContextHandle)
-	if !echReadContextHandle(&s, handle) || !s.Empty() {
-		// This is the result of a client-side error. However, aborting with
-		// "illegal_parameter" would stick out, so we reject instead.
-		res.Status = ECHProviderReject
-		res.RetryConfigs = keySet.configs
-		return // Reject
-	}
-	handle.raw = rawHandle
-
-	// Look up the secret key for the configuration indicated by the client.
-	key, ok := keySet.sk[handle.configId]
-	if !ok {
-		res.Status = ECHProviderReject
-		res.RetryConfigs = keySet.configs
-		return // Reject
-	}
-
-	// Ensure that support for the selected ciphersuite is indicated by the
-	// configuration.
-	suite := handle.suite
-	if !key.config.isPeerCipherSuiteSupported(suite) {
-		// This is the result of a client-side error. However, aborting with
-		// "illegal_parameter" would stick out, so we reject instead.
-		res.Status = ECHProviderReject
-		res.RetryConfigs = keySet.configs
-		return // Reject
-	}
-
-	// Ensure the version indicated by the client matches the version supported
-	// by the configuration.
-	if version != key.config.version {
-		// This is the result of a client-side error. However, aborting with
-		// "illegal_parameter" would stick out, so we reject instead.
-		res.Status = ECHProviderReject
-		res.RetryConfigs = keySet.configs
-		return // Reject
-	}
-
-	// Compute the decryption context.
-	opener, err := key.setupOpener(handle.enc, suite)
-	if err != nil {
-		if err.Error() == errHPKEInvalidPublicKey {
-			// This occurs if the KEM algorithm used to generate handle.enc is
-			// not the same as the KEM algorithm of the key. One way this can
-			// happen is if the client sent a GREASE ECH extension with a
-			// config_id that happens to match a known config, but which uses a
-			// different KEM algorithm.
-			res.Status = ECHProviderReject
-			res.RetryConfigs = keySet.configs
-			return // Reject
-		}
-
-		res.Status = ECHProviderAbort
-		res.Alert = uint8(alertInternalError)
-		res.Error = err
-		return // Abort
-	}
-
-	// Serialize the decryption context.
-	res.Context, err = opener.MarshalBinary()
-	if err != nil {
-		res.Status = ECHProviderAbort
-		res.Alert = uint8(alertInternalError)
-		res.Error = err
-		return // Abort
-	}
-
-	res.Status = ECHProviderSuccess
-	return // Success
-}
-
-// EXP_ECHKey represents an ECH key and its corresponding configuration. The
-// encoding of an ECH Key has the format defined below (in TLS syntax). Note
-// that the ECH standard does not specify this format.
-//
-//	struct {
-//	    opaque sk<0..2^16-1>;
-//	    ECHConfig config<0..2^16>; // draft-ietf-tls-esni-13
-//	} ECHKey;
-type EXP_ECHKey struct {
-	sk     kem.PrivateKey
-	config ECHConfig
-}
-
-// EXP_UnmarshalECHKeys parses a sequence of ECH keys.
-func EXP_UnmarshalECHKeys(raw []byte) ([]EXP_ECHKey, error) {
-	var (
-		err                  error
-		key                  EXP_ECHKey
-		sk, config, contents cryptobyte.String
-	)
-	s := cryptobyte.String(raw)
-	keys := make([]EXP_ECHKey, 0)
-KeysLoop:
-	for !s.Empty() {
-		if !s.ReadUint16LengthPrefixed(&sk) ||
-			!s.ReadUint16LengthPrefixed(&config) {
-			return nil, errors.New("error parsing key")
-		}
-
-		key.config.raw = config
-		if !config.ReadUint16(&key.config.version) ||
-			!config.ReadUint16LengthPrefixed(&contents) ||
-			!config.Empty() {
-			return nil, errors.New("error parsing config")
-		}
-
-		if key.config.version != extensionECH {
-			continue KeysLoop
-		}
-		if !readConfigContents(&contents, &key.config) {
-			return nil, errors.New("error parsing config contents")
-		}
-
-		for _, suite := range key.config.suites {
-			if !hpke.KDF(suite.kdfId).IsValid() ||
-				!hpke.AEAD(suite.aeadId).IsValid() {
-				continue KeysLoop
-			}
-		}
-
-		kem := hpke.KEM(key.config.kemId)
-		if !kem.IsValid() {
-			continue KeysLoop
-		}
-		key.config.pk, err = kem.Scheme().UnmarshalBinaryPublicKey(key.config.rawPublicKey)
-		if err != nil {
-			return nil, fmt.Errorf("error parsing public key: %s", err)
-		}
-		key.sk, err = kem.Scheme().UnmarshalBinaryPrivateKey(sk)
-		if err != nil {
-			return nil, fmt.Errorf("error parsing secret key: %s", err)
-		}
-
-		keys = append(keys, key)
-	}
-	return keys, nil
-}
-
-// setupOpener computes the HPKE context used by the server in the ECH
-// extension.i
-func (key *EXP_ECHKey) setupOpener(enc []byte, suite hpkeSymmetricCipherSuite) (hpke.Opener, error) {
-	if key.config.raw == nil {
-		panic("raw config not set")
-	}
-	hpkeSuite, err := hpkeAssembleSuite(
-		key.config.kemId,
-		suite.kdfId,
-		suite.aeadId,
-	)
-	if err != nil {
-		return nil, err
-	}
-	info := append(append([]byte(echHpkeInfoSetup), 0), key.config.raw...)
-	receiver, err := hpkeSuite.NewReceiver(key.sk, info)
-	if err != nil {
-		return nil, err
-	}
-	return receiver.Setup(enc)
-}

transport/cloudflaretls/generate_cert.go

@@ -1,194 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-//go:build ignore
-
-// Generate a self-signed X.509 certificate for a TLS server. Outputs to
-// 'cert.pem' and 'key.pem' and will overwrite existing files.
-
-package main
-
-import (
-	"crypto/ecdsa"
-	"crypto/ed25519"
-	"crypto/elliptic"
-	"crypto/rand"
-	"crypto/rsa"
-	"crypto/x509"
-	"crypto/x509/pkix"
-	"encoding/pem"
-	"flag"
-	"log"
-	"math/big"
-	"net"
-	"os"
-	"strings"
-	"time"
-
-	circlSign "github.com/cloudflare/circl/sign"
-	circlSchemes "github.com/cloudflare/circl/sign/schemes"
-)
-
-var (
-	host       = flag.String("host", "", "Comma-separated hostnames and IPs to generate a certificate for")
-	validFrom  = flag.String("start-date", "", "Creation date formatted as Jan 1 15:04:05 2011")
-	validFor   = flag.Duration("duration", 365*24*time.Hour, "Duration that certificate is valid for")
-	isCA       = flag.Bool("ca", false, "whether this cert should be its own Certificate Authority")
-	allowDC    = flag.Bool("allowDC", false, "whether this cert can be used with Delegated Credentials")
-	rsaBits    = flag.Int("rsa-bits", 2048, "Size of RSA key to generate. Ignored if --ecdsa-curve is set")
-	ecdsaCurve = flag.String("ecdsa-curve", "", "ECDSA curve to use to generate a key. Valid values are P224, P256 (recommended), P384, P521")
-	ed25519Key = flag.Bool("ed25519", false, "Generate an Ed25519 key")
-	circlKey   = flag.String("github.com/cloudflare/circl", "", "Generate a key supported by Circl")
-)
-
-func publicKey(priv any) any {
-	switch k := priv.(type) {
-	case *rsa.PrivateKey:
-		return &k.PublicKey
-	case *ecdsa.PrivateKey:
-		return &k.PublicKey
-	case ed25519.PrivateKey:
-		return k.Public().(ed25519.PublicKey)
-	case circlSign.PrivateKey:
-		return k.Public()
-	default:
-		return nil
-	}
-}
-
-func main() {
-	flag.Parse()
-
-	if len(*host) == 0 {
-		log.Fatalf("Missing required --host parameter")
-	}
-
-	var priv any
-	var err error
-	switch *ecdsaCurve {
-	case "":
-		if *ed25519Key {
-			_, priv, err = ed25519.GenerateKey(rand.Reader)
-		} else if *circlKey != "" {
-			scheme := circlSchemes.ByName(*circlKey)
-			if scheme == nil {
-				log.Fatalf("No such Circl scheme: %s", *circlKey)
-			}
-			_, priv, err = scheme.GenerateKey()
-		} else {
-			priv, err = rsa.GenerateKey(rand.Reader, *rsaBits)
-		}
-	case "P224":
-		priv, err = ecdsa.GenerateKey(elliptic.P224(), rand.Reader)
-	case "P256":
-		priv, err = ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
-	case "P384":
-		priv, err = ecdsa.GenerateKey(elliptic.P384(), rand.Reader)
-	case "P521":
-		priv, err = ecdsa.GenerateKey(elliptic.P521(), rand.Reader)
-	default:
-		log.Fatalf("Unrecognized elliptic curve: %q", *ecdsaCurve)
-	}
-	if err != nil {
-		log.Fatalf("Failed to generate private key: %v", err)
-	}
-
-	// ECDSA, ED25519 and RSA subject keys should have the DigitalSignature
-	// KeyUsage bits set in the x509.Certificate template
-	keyUsage := x509.KeyUsageDigitalSignature
-	// Only RSA subject keys should have the KeyEncipherment KeyUsage bits set. In
-	// the context of TLS this KeyUsage is particular to RSA key exchange and
-	// authentication.
-	if _, isRSA := priv.(*rsa.PrivateKey); isRSA {
-		keyUsage |= x509.KeyUsageKeyEncipherment
-	}
-
-	var notBefore time.Time
-	if len(*validFrom) == 0 {
-		notBefore = time.Now()
-	} else {
-		notBefore, err = time.Parse("Jan 2 15:04:05 2006", *validFrom)
-		if err != nil {
-			log.Fatalf("Failed to parse creation date: %v", err)
-		}
-	}
-
-	notAfter := notBefore.Add(*validFor)
-
-	serialNumberLimit := new(big.Int).Lsh(big.NewInt(1), 128)
-	serialNumber, err := rand.Int(rand.Reader, serialNumberLimit)
-	if err != nil {
-		log.Fatalf("Failed to generate serial number: %v", err)
-	}
-
-	template := x509.Certificate{
-		SerialNumber: serialNumber,
-		Subject: pkix.Name{
-			Organization: []string{"Acme Co"},
-		},
-		NotBefore: notBefore,
-		NotAfter:  notAfter,
-
-		KeyUsage:              keyUsage,
-		ExtKeyUsage:           []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
-		BasicConstraintsValid: true,
-	}
-
-	hosts := strings.Split(*host, ",")
-	for _, h := range hosts {
-		if ip := net.ParseIP(h); ip != nil {
-			template.IPAddresses = append(template.IPAddresses, ip)
-		} else {
-			template.DNSNames = append(template.DNSNames, h)
-		}
-	}
-
-	if *isCA {
-		if *allowDC {
-			log.Fatal("Failed to create certificate: ca is not allowed with the dc flag")
-		}
-
-		template.IsCA = true
-		template.KeyUsage |= x509.KeyUsageCertSign
-	}
-
-	if *allowDC {
-		template.AllowDC = true
-		template.KeyUsage |= x509.KeyUsageDigitalSignature
-	}
-
-	derBytes, err := x509.CreateCertificate(rand.Reader, &template, &template, publicKey(priv), priv)
-	if err != nil {
-		log.Fatalf("Failed to create certificate: %v", err)
-	}
-
-	certOut, err := os.Create("cert.pem")
-	if err != nil {
-		log.Fatalf("Failed to open cert.pem for writing: %v", err)
-	}
-	if err := pem.Encode(certOut, &pem.Block{Type: "CERTIFICATE", Bytes: derBytes}); err != nil {
-		log.Fatalf("Failed to write data to cert.pem: %v", err)
-	}
-	if err := certOut.Close(); err != nil {
-		log.Fatalf("Error closing cert.pem: %v", err)
-	}
-	log.Print("wrote cert.pem\n")
-
-	keyOut, err := os.OpenFile("key.pem", os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0o600)
-	if err != nil {
-		log.Fatalf("Failed to open key.pem for writing: %v", err)
-		return
-	}
-	privBytes, err := x509.MarshalPKCS8PrivateKey(priv)
-	if err != nil {
-		log.Fatalf("Unable to marshal private key: %v", err)
-	}
-	if err := pem.Encode(keyOut, &pem.Block{Type: "PRIVATE KEY", Bytes: privBytes}); err != nil {
-		log.Fatalf("Failed to write data to key.pem: %v", err)
-	}
-	if err := keyOut.Close(); err != nil {
-		log.Fatalf("Error closing key.pem: %v", err)
-	}
-	log.Print("wrote key.pem\n")
-}

transport/cloudflaretls/generate_delegated_credential.go

@@ -1,126 +0,0 @@
-// Copyright 2022 Cloudflare, Inc. All rights reserved. Use of this source code
-// is governed by a BSD-style license that can be found in the LICENSE file.
-
-//go:build ignore
-
-// Generate a delegated credential with the given signature scheme, signed with
-// the given x.509 key pair. Outputs to 'dc.cred' and 'dckey.pem' and will
-// overwrite existing files.
-
-// Example usage:
-// generate_delegated_credential -cert-path cert.pem -key-path key.pem -signature-scheme Ed25519 -duration 24h
-
-package main
-
-import (
-	"crypto"
-	"crypto/ecdsa"
-	"crypto/ed25519"
-	"crypto/rsa"
-	"crypto/tls"
-	"crypto/x509"
-	"encoding/pem"
-	"errors"
-	"flag"
-	"fmt"
-	"log"
-	"os"
-	"path/filepath"
-	"time"
-
-	circlSign "github.com/cloudflare/circl/sign"
-)
-
-var (
-	validFor        = flag.Duration("duration", 5*24*time.Hour, "Duration that credential is valid for")
-	signatureScheme = flag.String("signature-scheme", "", "The signature scheme used by the DC")
-	certPath        = flag.String("cert-path", "./cert.pem", "Path to signing cert")
-	keyPath         = flag.String("key-path", "./key.pem", "Path to signing key")
-	isClient        = flag.Bool("client-dc", false, "Create a client Delegated Credential")
-	outPath         = flag.String("out-path", "./", "Path to output directory")
-)
-
-var SigStringMap = map[string]tls.SignatureScheme{
-	// ECDSA algorithms. Only constrained to a specific curve in TLS 1.3.
-	"ECDSAWithP256AndSHA256": tls.ECDSAWithP256AndSHA256,
-	"ECDSAWithP384AndSHA384": tls.ECDSAWithP384AndSHA384,
-	"ECDSAWithP521AndSHA512": tls.ECDSAWithP521AndSHA512,
-
-	// EdDSA algorithms.
-	"Ed25519": tls.Ed25519,
-}
-
-func main() {
-	flag.Parse()
-	sa := SigStringMap[*signatureScheme]
-
-	cert, err := tls.LoadX509KeyPair(*certPath, *keyPath)
-	if err != nil {
-		log.Fatalf("Failed to load certificate and key: %v", err)
-	}
-	cert.Leaf, err = x509.ParseCertificate(cert.Certificate[0])
-	if err != nil {
-		log.Fatalf("Failed to parse leaf certificate: %v", err)
-	}
-
-	validTime := time.Since(cert.Leaf.NotBefore) + *validFor
-	dc, priv, err := tls.NewDelegatedCredential(&cert, sa, validTime, *isClient)
-	if err != nil {
-		log.Fatalf("Failed to create a DC: %v\n", err)
-	}
-	dcBytes, err := dc.Marshal()
-	if err != nil {
-		log.Fatalf("Failed to marshal DC: %v\n", err)
-	}
-
-	DCOut, err := os.Create(filepath.Join(*outPath, "dc.cred"))
-	if err != nil {
-		log.Fatalf("Failed to open dc.cred for writing: %v", err)
-	}
-
-	DCOut.Write(dcBytes)
-	if err := DCOut.Close(); err != nil {
-		log.Fatalf("Error closing dc.cred: %v", err)
-	}
-	log.Print("wrote dc.cred\n")
-
-	derBytes, err := x509.MarshalPKCS8PrivateKey(priv)
-	if err != nil {
-		log.Fatalf("Failed to marshal DC private key: %v\n", err)
-	}
-
-	DCKeyOut, err := os.Create(filepath.Join(*outPath, "dckey.pem"))
-	if err != nil {
-		log.Fatalf("Failed to open dckey.pem for writing: %v", err)
-	}
-
-	if err := pem.Encode(DCKeyOut, &pem.Block{Type: "PRIVATE KEY", Bytes: derBytes}); err != nil {
-		log.Fatalf("Failed to write data to dckey.pem: %v\n", err)
-	}
-	if err := DCKeyOut.Close(); err != nil {
-		log.Fatalf("Error closing dckey.pem: %v\n", err)
-	}
-	log.Print("wrote dckey.pem\n")
-
-	fmt.Println("Success")
-}
-
-// Copied from tls.go, because it's private.
-func parsePrivateKey(der []byte) (crypto.PrivateKey, error) {
-	if key, err := x509.ParsePKCS1PrivateKey(der); err == nil {
-		return key, nil
-	}
-	if key, err := x509.ParsePKCS8PrivateKey(der); err == nil {
-		switch key := key.(type) {
-		case *rsa.PrivateKey, *ecdsa.PrivateKey, ed25519.PrivateKey, circlSign.PrivateKey:
-			return key, nil
-		default:
-			return nil, errors.New("tls: found unknown private key type in PKCS#8 wrapping")
-		}
-	}
-	if key, err := x509.ParseECPrivateKey(der); err == nil {
-		return key, nil
-	}
-
-	return nil, errors.New("tls: failed to parse private key")
-}

transport/cloudflaretls/handshake_server.go

@@ -1,893 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package tls
-
-import (
-	"context"
-	"crypto"
-	"crypto/ecdsa"
-	"crypto/ed25519"
-	"crypto/rsa"
-	"crypto/subtle"
-	"crypto/x509"
-	"errors"
-	"fmt"
-	"hash"
-	"io"
-	"sync/atomic"
-	"time"
-
-	circlSign "github.com/cloudflare/circl/sign"
-)
-
-// serverHandshakeState contains details of a server handshake in progress.
-// It's discarded once the handshake has completed.
-type serverHandshakeState struct {
-	c            *Conn
-	ctx          context.Context
-	clientHello  *clientHelloMsg
-	hello        *serverHelloMsg
-	suite        *cipherSuite
-	ecdheOk      bool
-	ecSignOk     bool
-	rsaDecryptOk bool
-	rsaSignOk    bool
-	sessionState *sessionState
-	finishedHash finishedHash
-	masterSecret []byte
-	cert         *Certificate
-}
-
-// serverHandshake performs a TLS handshake as a server.
-func (c *Conn) serverHandshake(ctx context.Context) error {
-	clientHello, err := c.readClientHello(ctx)
-	if err != nil {
-		return err
-	}
-
-	if c.vers == VersionTLS13 {
-		hs := serverHandshakeStateTLS13{
-			c:           c,
-			ctx:         ctx,
-			clientHello: clientHello,
-			hsTimings:   createTLS13ServerHandshakeTimingInfo(c.config.Time),
-		}
-		return hs.handshake()
-	}
-
-	hs := serverHandshakeState{
-		c:           c,
-		ctx:         ctx,
-		clientHello: clientHello,
-	}
-	return hs.handshake()
-}
-
-func (hs *serverHandshakeState) handshake() error {
-	c := hs.c
-
-	if err := hs.processClientHello(); err != nil {
-		return err
-	}
-
-	// For an overview of TLS handshaking, see RFC 5246, Section 7.3.
-	c.buffering = true
-	if hs.checkForResumption() {
-		// The client has included a session ticket and so we do an abbreviated handshake.
-		c.didResume = true
-		if err := hs.doResumeHandshake(); err != nil {
-			return err
-		}
-		if err := hs.establishKeys(); err != nil {
-			return err
-		}
-		if err := hs.sendSessionTicket(); err != nil {
-			return err
-		}
-		if err := hs.sendFinished(c.serverFinished[:]); err != nil {
-			return err
-		}
-		if _, err := c.flush(); err != nil {
-			return err
-		}
-		c.clientFinishedIsFirst = false
-		if err := hs.readFinished(nil); err != nil {
-			return err
-		}
-	} else {
-		// The client didn't include a session ticket, or it wasn't
-		// valid so we do a full handshake.
-		if err := hs.pickCipherSuite(); err != nil {
-			return err
-		}
-		if err := hs.doFullHandshake(); err != nil {
-			return err
-		}
-		if err := hs.establishKeys(); err != nil {
-			return err
-		}
-		if err := hs.readFinished(c.clientFinished[:]); err != nil {
-			return err
-		}
-		c.clientFinishedIsFirst = true
-		c.buffering = true
-		if err := hs.sendSessionTicket(); err != nil {
-			return err
-		}
-		if err := hs.sendFinished(nil); err != nil {
-			return err
-		}
-		if _, err := c.flush(); err != nil {
-			return err
-		}
-	}
-
-	c.ekm = ekmFromMasterSecret(c.vers, hs.suite, hs.masterSecret, hs.clientHello.random, hs.hello.random)
-	atomic.StoreUint32(&c.handshakeStatus, 1)
-
-	return nil
-}
-
-// readClientHello reads a ClientHello message and selects the protocol version.
-func (c *Conn) readClientHello(ctx context.Context) (*clientHelloMsg, error) {
-	msg, err := c.readHandshake()
-	if err != nil {
-		return nil, err
-	}
-	clientHello, ok := msg.(*clientHelloMsg)
-	if !ok {
-		c.sendAlert(alertUnexpectedMessage)
-		return nil, unexpectedMessageError(clientHello, msg)
-	}
-
-	// NOTE(cjpatton): ECH usage is resolved before calling GetConfigForClient()
-	// or GetCertifciate(). Hence, it is not currently possible to reject ECH if
-	// we don't recognize the inner SNI. This may or may not be desirable in the
-	// future.
-	clientHello, err = c.echAcceptOrReject(clientHello, false) // afterHRR == false
-	if err != nil {
-		return nil, fmt.Errorf("tls: %s", err) // Alert sent.
-	}
-
-	var configForClient *Config
-	originalConfig := c.config
-	if c.config.GetConfigForClient != nil {
-		chi := clientHelloInfo(ctx, c, clientHello)
-		if configForClient, err = c.config.GetConfigForClient(chi); err != nil {
-			c.sendAlert(alertInternalError)
-			return nil, err
-		} else if configForClient != nil {
-			c.config = configForClient
-		}
-	}
-	c.ticketKeys = originalConfig.ticketKeys(configForClient)
-
-	clientVersions := clientHello.supportedVersions
-	if len(clientHello.supportedVersions) == 0 {
-		clientVersions = supportedVersionsFromMax(clientHello.vers)
-	}
-	c.vers, ok = c.config.mutualVersion(roleServer, clientVersions)
-	if !ok {
-		c.sendAlert(alertProtocolVersion)
-		return nil, fmt.Errorf("tls: client offered only unsupported versions: %x", clientVersions)
-	}
-	c.haveVers = true
-	c.in.version = c.vers
-	c.out.version = c.vers
-
-	return clientHello, nil
-}
-
-func (hs *serverHandshakeState) processClientHello() error {
-	c := hs.c
-
-	hs.hello = new(serverHelloMsg)
-	hs.hello.vers = c.vers
-
-	foundCompression := false
-	// We only support null compression, so check that the client offered it.
-	for _, compression := range hs.clientHello.compressionMethods {
-		if compression == compressionNone {
-			foundCompression = true
-			break
-		}
-	}
-
-	if !foundCompression {
-		c.sendAlert(alertHandshakeFailure)
-		return errors.New("tls: client does not support uncompressed connections")
-	}
-
-	hs.hello.random = make([]byte, 32)
-	serverRandom := hs.hello.random
-	// Downgrade protection canaries. See RFC 8446, Section 4.1.3.
-	maxVers := c.config.maxSupportedVersion(roleServer)
-	if maxVers >= VersionTLS12 && c.vers < maxVers || testingOnlyForceDowngradeCanary {
-		if c.vers == VersionTLS12 {
-			copy(serverRandom[24:], downgradeCanaryTLS12)
-		} else {
-			copy(serverRandom[24:], downgradeCanaryTLS11)
-		}
-		serverRandom = serverRandom[:24]
-	}
-	_, err := io.ReadFull(c.config.rand(), serverRandom)
-	if err != nil {
-		c.sendAlert(alertInternalError)
-		return err
-	}
-
-	if len(hs.clientHello.secureRenegotiation) != 0 {
-		c.sendAlert(alertHandshakeFailure)
-		return errors.New("tls: initial handshake had non-empty renegotiation extension")
-	}
-
-	hs.hello.secureRenegotiationSupported = hs.clientHello.secureRenegotiationSupported
-	hs.hello.compressionMethod = compressionNone
-	if len(hs.clientHello.serverName) > 0 {
-		c.serverName = hs.clientHello.serverName
-	}
-
-	selectedProto, err := negotiateALPN(c.config.NextProtos, hs.clientHello.alpnProtocols)
-	if err != nil {
-		c.sendAlert(alertNoApplicationProtocol)
-		return err
-	}
-	hs.hello.alpnProtocol = selectedProto
-	c.clientProtocol = selectedProto
-
-	hs.cert, err = c.config.getCertificate(clientHelloInfo(hs.ctx, c, hs.clientHello))
-	if err != nil {
-		if err == errNoCertificates {
-			c.sendAlert(alertUnrecognizedName)
-		} else {
-			c.sendAlert(alertInternalError)
-		}
-		return err
-	}
-	if hs.clientHello.scts {
-		hs.hello.scts = hs.cert.SignedCertificateTimestamps
-	}
-
-	hs.ecdheOk = supportsECDHE(c.config, hs.clientHello.supportedCurves, hs.clientHello.supportedPoints)
-
-	if hs.ecdheOk {
-		// Although omitting the ec_point_formats extension is permitted, some
-		// old OpenSSL version will refuse to handshake if not present.
-		//
-		// Per RFC 4492, section 5.1.2, implementations MUST support the
-		// uncompressed point format. See golang.org/issue/31943.
-		hs.hello.supportedPoints = []uint8{pointFormatUncompressed}
-	}
-
-	if priv, ok := hs.cert.PrivateKey.(crypto.Signer); ok {
-		switch priv.Public().(type) {
-		case *ecdsa.PublicKey:
-			hs.ecSignOk = true
-		case ed25519.PublicKey:
-			hs.ecSignOk = true
-		case *rsa.PublicKey:
-			hs.rsaSignOk = true
-		default:
-			c.sendAlert(alertInternalError)
-			return fmt.Errorf("tls: unsupported signing key type (%T)", priv.Public())
-		}
-	}
-	if priv, ok := hs.cert.PrivateKey.(crypto.Decrypter); ok {
-		switch priv.Public().(type) {
-		case *rsa.PublicKey:
-			hs.rsaDecryptOk = true
-		default:
-			c.sendAlert(alertInternalError)
-			return fmt.Errorf("tls: unsupported decryption key type (%T)", priv.Public())
-		}
-	}
-
-	return nil
-}
-
-// negotiateALPN picks a shared ALPN protocol that both sides support in server
-// preference order. If ALPN is not configured or the peer doesn't support it,
-// it returns "" and no error.
-func negotiateALPN(serverProtos, clientProtos []string) (string, error) {
-	if len(serverProtos) == 0 || len(clientProtos) == 0 {
-		return "", nil
-	}
-	var http11fallback bool
-	for _, s := range serverProtos {
-		for _, c := range clientProtos {
-			if s == c {
-				return s, nil
-			}
-			if s == "h2" && c == "http/1.1" {
-				http11fallback = true
-			}
-		}
-	}
-	// As a special case, let http/1.1 clients connect to h2 servers as if they
-	// didn't support ALPN. We used not to enforce protocol overlap, so over
-	// time a number of HTTP servers were configured with only "h2", but
-	// expected to accept connections from "http/1.1" clients. See Issue 46310.
-	if http11fallback {
-		return "", nil
-	}
-	return "", fmt.Errorf("tls: client requested unsupported application protocols (%s)", clientProtos)
-}
-
-// supportsECDHE returns whether ECDHE key exchanges can be used with this
-// pre-TLS 1.3 client.
-func supportsECDHE(c *Config, supportedCurves []CurveID, supportedPoints []uint8) bool {
-	supportsCurve := false
-	for _, curve := range supportedCurves {
-		if c.supportsCurve(curve) {
-			supportsCurve = true
-			break
-		}
-	}
-
-	supportsPointFormat := false
-	for _, pointFormat := range supportedPoints {
-		if pointFormat == pointFormatUncompressed {
-			supportsPointFormat = true
-			break
-		}
-	}
-
-	return supportsCurve && supportsPointFormat
-}
-
-func (hs *serverHandshakeState) pickCipherSuite() error {
-	c := hs.c
-
-	preferenceOrder := cipherSuitesPreferenceOrder
-	if !hasAESGCMHardwareSupport || !aesgcmPreferred(hs.clientHello.cipherSuites) {
-		preferenceOrder = cipherSuitesPreferenceOrderNoAES
-	}
-
-	configCipherSuites := c.config.cipherSuites()
-	preferenceList := make([]uint16, 0, len(configCipherSuites))
-	for _, suiteID := range preferenceOrder {
-		for _, id := range configCipherSuites {
-			if id == suiteID {
-				preferenceList = append(preferenceList, id)
-				break
-			}
-		}
-	}
-
-	hs.suite = selectCipherSuite(preferenceList, hs.clientHello.cipherSuites, hs.cipherSuiteOk)
-	if hs.suite == nil {
-		c.sendAlert(alertHandshakeFailure)
-		return errors.New("tls: no cipher suite supported by both client and server")
-	}
-	c.cipherSuite = hs.suite.id
-
-	for _, id := range hs.clientHello.cipherSuites {
-		if id == TLS_FALLBACK_SCSV {
-			// The client is doing a fallback connection. See RFC 7507.
-			if hs.clientHello.vers < c.config.maxSupportedVersion(roleServer) {
-				c.sendAlert(alertInappropriateFallback)
-				return errors.New("tls: client using inappropriate protocol fallback")
-			}
-			break
-		}
-	}
-
-	return nil
-}
-
-func (hs *serverHandshakeState) cipherSuiteOk(c *cipherSuite) bool {
-	if c.flags&suiteECDHE != 0 {
-		if !hs.ecdheOk {
-			return false
-		}
-		if c.flags&suiteECSign != 0 {
-			if !hs.ecSignOk {
-				return false
-			}
-		} else if !hs.rsaSignOk {
-			return false
-		}
-	} else if !hs.rsaDecryptOk {
-		return false
-	}
-	if hs.c.vers < VersionTLS12 && c.flags&suiteTLS12 != 0 {
-		return false
-	}
-	return true
-}
-
-// checkForResumption reports whether we should perform resumption on this connection.
-func (hs *serverHandshakeState) checkForResumption() bool {
-	c := hs.c
-
-	if c.config.SessionTicketsDisabled || c.config.ECHEnabled {
-		return false
-	}
-
-	plaintext, usedOldKey := c.decryptTicket(hs.clientHello.sessionTicket)
-	if plaintext == nil {
-		return false
-	}
-	hs.sessionState = &sessionState{usedOldKey: usedOldKey}
-	ok := hs.sessionState.unmarshal(plaintext)
-	if !ok {
-		return false
-	}
-
-	createdAt := time.Unix(int64(hs.sessionState.createdAt), 0)
-	if c.config.time().Sub(createdAt) > maxSessionTicketLifetime {
-		return false
-	}
-
-	// Never resume a session for a different TLS version.
-	if c.vers != hs.sessionState.vers {
-		return false
-	}
-
-	cipherSuiteOk := false
-	// Check that the client is still offering the ciphersuite in the session.
-	for _, id := range hs.clientHello.cipherSuites {
-		if id == hs.sessionState.cipherSuite {
-			cipherSuiteOk = true
-			break
-		}
-	}
-	if !cipherSuiteOk {
-		return false
-	}
-
-	// Check that we also support the ciphersuite from the session.
-	hs.suite = selectCipherSuite([]uint16{hs.sessionState.cipherSuite},
-		c.config.cipherSuites(), hs.cipherSuiteOk)
-	if hs.suite == nil {
-		return false
-	}
-
-	sessionHasClientCerts := len(hs.sessionState.certificates) != 0
-	needClientCerts := requiresClientCert(c.config.ClientAuth)
-	if needClientCerts && !sessionHasClientCerts {
-		return false
-	}
-	if sessionHasClientCerts && c.config.ClientAuth == NoClientCert {
-		return false
-	}
-
-	return true
-}
-
-func (hs *serverHandshakeState) doResumeHandshake() error {
-	c := hs.c
-
-	hs.hello.cipherSuite = hs.suite.id
-	c.cipherSuite = hs.suite.id
-	// We echo the client's session ID in the ServerHello to let it know
-	// that we're doing a resumption.
-	hs.hello.sessionId = hs.clientHello.sessionId
-	hs.hello.ticketSupported = hs.sessionState.usedOldKey
-	hs.finishedHash = newFinishedHash(c.vers, hs.suite)
-	hs.finishedHash.discardHandshakeBuffer()
-	hs.finishedHash.Write(hs.clientHello.marshal())
-	hs.finishedHash.Write(hs.hello.marshal())
-	if _, err := c.writeRecord(recordTypeHandshake, hs.hello.marshal()); err != nil {
-		return err
-	}
-
-	if err := c.processCertsFromClient(Certificate{
-		Certificate: hs.sessionState.certificates,
-	}); err != nil {
-		return err
-	}
-
-	if c.config.VerifyConnection != nil {
-		if err := c.config.VerifyConnection(c.connectionStateLocked()); err != nil {
-			c.sendAlert(alertBadCertificate)
-			return err
-		}
-	}
-
-	hs.masterSecret = hs.sessionState.masterSecret
-
-	return nil
-}
-
-func (hs *serverHandshakeState) doFullHandshake() error {
-	c := hs.c
-
-	if hs.clientHello.ocspStapling && len(hs.cert.OCSPStaple) > 0 {
-		hs.hello.ocspStapling = true
-	}
-
-	hs.hello.ticketSupported = hs.clientHello.ticketSupported && !c.config.SessionTicketsDisabled && !c.config.ECHEnabled
-	hs.hello.cipherSuite = hs.suite.id
-
-	hs.finishedHash = newFinishedHash(hs.c.vers, hs.suite)
-	if c.config.ClientAuth == NoClientCert {
-		// No need to keep a full record of the handshake if client
-		// certificates won't be used.
-		hs.finishedHash.discardHandshakeBuffer()
-	}
-	hs.finishedHash.Write(hs.clientHello.marshal())
-	hs.finishedHash.Write(hs.hello.marshal())
-	if _, err := c.writeRecord(recordTypeHandshake, hs.hello.marshal()); err != nil {
-		return err
-	}
-
-	certMsg := new(certificateMsg)
-	certMsg.certificates = hs.cert.Certificate
-	hs.finishedHash.Write(certMsg.marshal())
-	if _, err := c.writeRecord(recordTypeHandshake, certMsg.marshal()); err != nil {
-		return err
-	}
-
-	if hs.hello.ocspStapling {
-		certStatus := new(certificateStatusMsg)
-		certStatus.response = hs.cert.OCSPStaple
-		hs.finishedHash.Write(certStatus.marshal())
-		if _, err := c.writeRecord(recordTypeHandshake, certStatus.marshal()); err != nil {
-			return err
-		}
-	}
-
-	keyAgreement := hs.suite.ka(c.vers)
-	skx, err := keyAgreement.generateServerKeyExchange(c.config, hs.cert, hs.clientHello, hs.hello)
-	if err != nil {
-		c.sendAlert(alertHandshakeFailure)
-		return err
-	}
-	if skx != nil {
-		hs.finishedHash.Write(skx.marshal())
-		if _, err := c.writeRecord(recordTypeHandshake, skx.marshal()); err != nil {
-			return err
-		}
-	}
-
-	var certReq *certificateRequestMsg
-	if c.config.ClientAuth >= RequestClientCert {
-		// Request a client certificate
-		certReq = new(certificateRequestMsg)
-		certReq.certificateTypes = []byte{
-			byte(certTypeRSASign),
-			byte(certTypeECDSASign),
-		}
-		if c.vers >= VersionTLS12 {
-			certReq.hasSignatureAlgorithm = true
-			certReq.supportedSignatureAlgorithms = c.config.supportedSignatureAlgorithms()
-		}
-
-		// An empty list of certificateAuthorities signals to
-		// the client that it may send any certificate in response
-		// to our request. When we know the CAs we trust, then
-		// we can send them down, so that the client can choose
-		// an appropriate certificate to give to us.
-		if c.config.ClientCAs != nil {
-			certReq.certificateAuthorities = c.config.ClientCAs.Subjects()
-		}
-		hs.finishedHash.Write(certReq.marshal())
-		if _, err := c.writeRecord(recordTypeHandshake, certReq.marshal()); err != nil {
-			return err
-		}
-	}
-
-	helloDone := new(serverHelloDoneMsg)
-	hs.finishedHash.Write(helloDone.marshal())
-	if _, err := c.writeRecord(recordTypeHandshake, helloDone.marshal()); err != nil {
-		return err
-	}
-
-	if _, err := c.flush(); err != nil {
-		return err
-	}
-
-	var pub crypto.PublicKey // public key for client auth, if any
-
-	msg, err := c.readHandshake()
-	if err != nil {
-		return err
-	}
-
-	// If we requested a client certificate, then the client must send a
-	// certificate message, even if it's empty.
-	if c.config.ClientAuth >= RequestClientCert {
-		certMsg, ok := msg.(*certificateMsg)
-		if !ok {
-			c.sendAlert(alertUnexpectedMessage)
-			return unexpectedMessageError(certMsg, msg)
-		}
-		hs.finishedHash.Write(certMsg.marshal())
-
-		if err := c.processCertsFromClient(Certificate{
-			Certificate: certMsg.certificates,
-		}); err != nil {
-			return err
-		}
-		if len(certMsg.certificates) != 0 {
-			pub = c.peerCertificates[0].PublicKey
-		}
-
-		msg, err = c.readHandshake()
-		if err != nil {
-			return err
-		}
-	}
-	if c.config.VerifyConnection != nil {
-		if err := c.config.VerifyConnection(c.connectionStateLocked()); err != nil {
-			c.sendAlert(alertBadCertificate)
-			return err
-		}
-	}
-
-	// Get client key exchange
-	ckx, ok := msg.(*clientKeyExchangeMsg)
-	if !ok {
-		c.sendAlert(alertUnexpectedMessage)
-		return unexpectedMessageError(ckx, msg)
-	}
-	hs.finishedHash.Write(ckx.marshal())
-
-	preMasterSecret, err := keyAgreement.processClientKeyExchange(c.config, hs.cert, ckx, c.vers)
-	if err != nil {
-		c.sendAlert(alertHandshakeFailure)
-		return err
-	}
-	if eccKex, ok := keyAgreement.(*ecdheKeyAgreement); ok {
-		c.handleCFEvent(CFEventTLSNegotiatedNamedKEX{
-			KEX: eccKex.params.CurveID(),
-		})
-	}
-	hs.masterSecret = masterFromPreMasterSecret(c.vers, hs.suite, preMasterSecret, hs.clientHello.random, hs.hello.random)
-	if err := c.config.writeKeyLog(keyLogLabelTLS12, hs.clientHello.random, hs.masterSecret); err != nil {
-		c.sendAlert(alertInternalError)
-		return err
-	}
-
-	// If we received a client cert in response to our certificate request message,
-	// the client will send us a certificateVerifyMsg immediately after the
-	// clientKeyExchangeMsg. This message is a digest of all preceding
-	// handshake-layer messages that is signed using the private key corresponding
-	// to the client's certificate. This allows us to verify that the client is in
-	// possession of the private key of the certificate.
-	if len(c.peerCertificates) > 0 {
-		msg, err = c.readHandshake()
-		if err != nil {
-			return err
-		}
-		certVerify, ok := msg.(*certificateVerifyMsg)
-		if !ok {
-			c.sendAlert(alertUnexpectedMessage)
-			return unexpectedMessageError(certVerify, msg)
-		}
-
-		var sigType uint8
-		var sigHash crypto.Hash
-		if c.vers >= VersionTLS12 {
-			if !isSupportedSignatureAlgorithm(certVerify.signatureAlgorithm, certReq.supportedSignatureAlgorithms) {
-				c.sendAlert(alertIllegalParameter)
-				return errors.New("tls: client certificate used with invalid signature algorithm")
-			}
-			sigType, sigHash, err = typeAndHashFromSignatureScheme(certVerify.signatureAlgorithm)
-			if err != nil {
-				return c.sendAlert(alertInternalError)
-			}
-		} else {
-			sigType, sigHash, err = legacyTypeAndHashFromPublicKey(pub)
-			if err != nil {
-				c.sendAlert(alertIllegalParameter)
-				return err
-			}
-		}
-
-		signed := hs.finishedHash.hashForClientCertificate(sigType, sigHash, hs.masterSecret)
-		if err := verifyHandshakeSignature(sigType, pub, sigHash, signed, certVerify.signature); err != nil {
-			c.sendAlert(alertDecryptError)
-			return errors.New("tls: invalid signature by the client certificate: " + err.Error())
-		}
-
-		hs.finishedHash.Write(certVerify.marshal())
-	}
-
-	hs.finishedHash.discardHandshakeBuffer()
-
-	return nil
-}
-
-func (hs *serverHandshakeState) establishKeys() error {
-	c := hs.c
-
-	clientMAC, serverMAC, clientKey, serverKey, clientIV, serverIV := keysFromMasterSecret(c.vers, hs.suite, hs.masterSecret, hs.clientHello.random, hs.hello.random, hs.suite.macLen, hs.suite.keyLen, hs.suite.ivLen)
-
-	var clientCipher, serverCipher any
-	var clientHash, serverHash hash.Hash
-
-	if hs.suite.aead == nil {
-		clientCipher = hs.suite.cipher(clientKey, clientIV, true /* for reading */)
-		clientHash = hs.suite.mac(clientMAC)
-		serverCipher = hs.suite.cipher(serverKey, serverIV, false /* not for reading */)
-		serverHash = hs.suite.mac(serverMAC)
-	} else {
-		clientCipher = hs.suite.aead(clientKey, clientIV)
-		serverCipher = hs.suite.aead(serverKey, serverIV)
-	}
-
-	c.in.prepareCipherSpec(c.vers, clientCipher, clientHash)
-	c.out.prepareCipherSpec(c.vers, serverCipher, serverHash)
-
-	return nil
-}
-
-func (hs *serverHandshakeState) readFinished(out []byte) error {
-	c := hs.c
-
-	if err := c.readChangeCipherSpec(); err != nil {
-		return err
-	}
-
-	msg, err := c.readHandshake()
-	if err != nil {
-		return err
-	}
-	clientFinished, ok := msg.(*finishedMsg)
-	if !ok {
-		c.sendAlert(alertUnexpectedMessage)
-		return unexpectedMessageError(clientFinished, msg)
-	}
-
-	verify := hs.finishedHash.clientSum(hs.masterSecret)
-	if len(verify) != len(clientFinished.verifyData) ||
-		subtle.ConstantTimeCompare(verify, clientFinished.verifyData) != 1 {
-		c.sendAlert(alertHandshakeFailure)
-		return errors.New("tls: client's Finished message is incorrect")
-	}
-
-	hs.finishedHash.Write(clientFinished.marshal())
-	copy(out, verify)
-	return nil
-}
-
-func (hs *serverHandshakeState) sendSessionTicket() error {
-	// ticketSupported is set in a resumption handshake if the
-	// ticket from the client was encrypted with an old session
-	// ticket key and thus a refreshed ticket should be sent.
-	if !hs.hello.ticketSupported {
-		return nil
-	}
-
-	c := hs.c
-	m := new(newSessionTicketMsg)
-
-	createdAt := uint64(c.config.time().Unix())
-	if hs.sessionState != nil {
-		// If this is re-wrapping an old key, then keep
-		// the original time it was created.
-		createdAt = hs.sessionState.createdAt
-	}
-
-	var certsFromClient [][]byte
-	for _, cert := range c.peerCertificates {
-		certsFromClient = append(certsFromClient, cert.Raw)
-	}
-	state := sessionState{
-		vers:         c.vers,
-		cipherSuite:  hs.suite.id,
-		createdAt:    createdAt,
-		masterSecret: hs.masterSecret,
-		certificates: certsFromClient,
-	}
-	var err error
-	m.ticket, err = c.encryptTicket(state.marshal())
-	if err != nil {
-		return err
-	}
-
-	hs.finishedHash.Write(m.marshal())
-	if _, err := c.writeRecord(recordTypeHandshake, m.marshal()); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func (hs *serverHandshakeState) sendFinished(out []byte) error {
-	c := hs.c
-
-	if _, err := c.writeRecord(recordTypeChangeCipherSpec, []byte{1}); err != nil {
-		return err
-	}
-
-	finished := new(finishedMsg)
-	finished.verifyData = hs.finishedHash.serverSum(hs.masterSecret)
-	hs.finishedHash.Write(finished.marshal())
-	if _, err := c.writeRecord(recordTypeHandshake, finished.marshal()); err != nil {
-		return err
-	}
-
-	copy(out, finished.verifyData)
-
-	return nil
-}
-
-// processCertsFromClient takes a chain of client certificates either from a
-// Certificates message or from a sessionState and verifies them. It returns
-// the public key of the leaf certificate.
-func (c *Conn) processCertsFromClient(certificate Certificate) error {
-	certificates := certificate.Certificate
-	certs := make([]*x509.Certificate, len(certificates))
-	var err error
-	for i, asn1Data := range certificates {
-		if certs[i], err = x509.ParseCertificate(asn1Data); err != nil {
-			c.sendAlert(alertBadCertificate)
-			return errors.New("tls: failed to parse client certificate: " + err.Error())
-		}
-	}
-
-	if len(certs) == 0 && requiresClientCert(c.config.ClientAuth) {
-		c.sendAlert(alertBadCertificate)
-		return errors.New("tls: client didn't provide a certificate")
-	}
-
-	if c.config.ClientAuth >= VerifyClientCertIfGiven && len(certs) > 0 {
-		opts := x509.VerifyOptions{
-			Roots:         c.config.ClientCAs,
-			CurrentTime:   c.config.time(),
-			Intermediates: x509.NewCertPool(),
-			KeyUsages:     []x509.ExtKeyUsage{x509.ExtKeyUsageClientAuth},
-		}
-
-		for _, cert := range certs[1:] {
-			opts.Intermediates.AddCert(cert)
-		}
-
-		chains, err := certs[0].Verify(opts)
-		if err != nil {
-			c.sendAlert(alertBadCertificate)
-			return errors.New("tls: failed to verify client certificate: " + err.Error())
-		}
-
-		c.verifiedChains = chains
-	}
-
-	c.peerCertificates = certs
-	c.ocspResponse = certificate.OCSPStaple
-	c.scts = certificate.SignedCertificateTimestamps
-
-	if len(certs) > 0 {
-		switch certs[0].PublicKey.(type) {
-		case *ecdsa.PublicKey, *rsa.PublicKey, ed25519.PublicKey, circlSign.PublicKey:
-		default:
-			c.sendAlert(alertUnsupportedCertificate)
-			return fmt.Errorf("tls: client certificate contains an unsupported public key of type %T", certs[0].PublicKey)
-		}
-	}
-
-	if c.config.VerifyPeerCertificate != nil {
-		if err := c.config.VerifyPeerCertificate(certificates, c.verifiedChains); err != nil {
-			c.sendAlert(alertBadCertificate)
-			return err
-		}
-	}
-
-	return nil
-}
-
-func clientHelloInfo(ctx context.Context, c *Conn, clientHello *clientHelloMsg) *ClientHelloInfo {
-	supportedVersions := clientHello.supportedVersions
-	if len(clientHello.supportedVersions) == 0 {
-		supportedVersions = supportedVersionsFromMax(clientHello.vers)
-	}
-
-	return &ClientHelloInfo{
-		CipherSuites:                clientHello.cipherSuites,
-		ServerName:                  clientHello.serverName,
-		SupportedCurves:             clientHello.supportedCurves,
-		SupportedPoints:             clientHello.supportedPoints,
-		SignatureSchemes:            clientHello.supportedSignatureAlgorithms,
-		SupportedProtos:             clientHello.alpnProtocols,
-		SupportedVersions:           supportedVersions,
-		SupportsDelegatedCredential: clientHello.delegatedCredentialSupported,
-		SignatureSchemesDC:          clientHello.supportedSignatureAlgorithmsDC,
-		Conn:                        c.conn,
-		config:                      c.config,
-		ctx:                         ctx,
-	}
-}

transport/cloudflaretls/hpke.go

@@ -1,42 +0,0 @@
-// Copyright 2020 Cloudflare, Inc. All rights reserved. Use of this source code
-// is governed by a BSD-style license that can be found in the LICENSE file.
-
-package tls
-
-import (
-	"errors"
-	"fmt"
-
-	"github.com/cloudflare/circl/hpke"
-)
-
-// The mandatory-to-implement HPKE cipher suite for use with the ECH extension.
-var defaultHPKESuite hpke.Suite
-
-func init() {
-	var err error
-	defaultHPKESuite, err = hpkeAssembleSuite(
-		uint16(hpke.KEM_X25519_HKDF_SHA256),
-		uint16(hpke.KDF_HKDF_SHA256),
-		uint16(hpke.AEAD_AES128GCM),
-	)
-	if err != nil {
-		panic(fmt.Sprintf("hpke: mandatory-to-implement cipher suite not supported: %s", err))
-	}
-}
-
-func hpkeAssembleSuite(kemId, kdfId, aeadId uint16) (hpke.Suite, error) {
-	kem := hpke.KEM(kemId)
-	if !kem.IsValid() {
-		return hpke.Suite{}, errors.New("KEM is not supported")
-	}
-	kdf := hpke.KDF(kdfId)
-	if !kdf.IsValid() {
-		return hpke.Suite{}, errors.New("KDF is not supported")
-	}
-	aead := hpke.AEAD(aeadId)
-	if !aead.IsValid() {
-		return hpke.Suite{}, errors.New("AEAD is not supported")
-	}
-	return hpke.NewSuite(kem, kdf, aead), nil
-}

transport/cloudflaretls/key_agreement.go

@@ -1,359 +0,0 @@
-// Copyright 2010 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package tls
-
-import (
-	"crypto"
-	"crypto/md5"
-	"crypto/rsa"
-	"crypto/sha1"
-	"crypto/x509"
-	"errors"
-	"fmt"
-	"io"
-)
-
-// a keyAgreement implements the client and server side of a TLS key agreement
-// protocol by generating and processing key exchange messages.
-type keyAgreement interface {
-	// On the server side, the first two methods are called in order.
-
-	// In the case that the key agreement protocol doesn't use a
-	// ServerKeyExchange message, generateServerKeyExchange can return nil,
-	// nil.
-	generateServerKeyExchange(*Config, *Certificate, *clientHelloMsg, *serverHelloMsg) (*serverKeyExchangeMsg, error)
-	processClientKeyExchange(*Config, *Certificate, *clientKeyExchangeMsg, uint16) ([]byte, error)
-
-	// On the client side, the next two methods are called in order.
-
-	// This method may not be called if the server doesn't send a
-	// ServerKeyExchange message.
-	processServerKeyExchange(*Config, *clientHelloMsg, *serverHelloMsg, *x509.Certificate, *serverKeyExchangeMsg) error
-	generateClientKeyExchange(*Config, *clientHelloMsg, *x509.Certificate) ([]byte, *clientKeyExchangeMsg, error)
-}
-
-var (
-	errClientKeyExchange = errors.New("tls: invalid ClientKeyExchange message")
-	errServerKeyExchange = errors.New("tls: invalid ServerKeyExchange message")
-)
-
-// rsaKeyAgreement implements the standard TLS key agreement where the client
-// encrypts the pre-master secret to the server's public key.
-type rsaKeyAgreement struct{}
-
-func (ka rsaKeyAgreement) generateServerKeyExchange(config *Config, cert *Certificate, clientHello *clientHelloMsg, hello *serverHelloMsg) (*serverKeyExchangeMsg, error) {
-	return nil, nil
-}
-
-func (ka rsaKeyAgreement) processClientKeyExchange(config *Config, cert *Certificate, ckx *clientKeyExchangeMsg, version uint16) ([]byte, error) {
-	if len(ckx.ciphertext) < 2 {
-		return nil, errClientKeyExchange
-	}
-	ciphertextLen := int(ckx.ciphertext[0])<<8 | int(ckx.ciphertext[1])
-	if ciphertextLen != len(ckx.ciphertext)-2 {
-		return nil, errClientKeyExchange
-	}
-	ciphertext := ckx.ciphertext[2:]
-
-	priv, ok := cert.PrivateKey.(crypto.Decrypter)
-	if !ok {
-		return nil, errors.New("tls: certificate private key does not implement crypto.Decrypter")
-	}
-	// Perform constant time RSA PKCS #1 v1.5 decryption
-	preMasterSecret, err := priv.Decrypt(config.rand(), ciphertext, &rsa.PKCS1v15DecryptOptions{SessionKeyLen: 48})
-	if err != nil {
-		return nil, err
-	}
-	// We don't check the version number in the premaster secret. For one,
-	// by checking it, we would leak information about the validity of the
-	// encrypted pre-master secret. Secondly, it provides only a small
-	// benefit against a downgrade attack and some implementations send the
-	// wrong version anyway. See the discussion at the end of section
-	// 7.4.7.1 of RFC 4346.
-	return preMasterSecret, nil
-}
-
-func (ka rsaKeyAgreement) processServerKeyExchange(config *Config, clientHello *clientHelloMsg, serverHello *serverHelloMsg, cert *x509.Certificate, skx *serverKeyExchangeMsg) error {
-	return errors.New("tls: unexpected ServerKeyExchange")
-}
-
-func (ka rsaKeyAgreement) generateClientKeyExchange(config *Config, clientHello *clientHelloMsg, cert *x509.Certificate) ([]byte, *clientKeyExchangeMsg, error) {
-	preMasterSecret := make([]byte, 48)
-	preMasterSecret[0] = byte(clientHello.vers >> 8)
-	preMasterSecret[1] = byte(clientHello.vers)
-	_, err := io.ReadFull(config.rand(), preMasterSecret[2:])
-	if err != nil {
-		return nil, nil, err
-	}
-
-	rsaKey, ok := cert.PublicKey.(*rsa.PublicKey)
-	if !ok {
-		return nil, nil, errors.New("tls: server certificate contains incorrect key type for selected ciphersuite")
-	}
-	encrypted, err := rsa.EncryptPKCS1v15(config.rand(), rsaKey, preMasterSecret)
-	if err != nil {
-		return nil, nil, err
-	}
-	ckx := new(clientKeyExchangeMsg)
-	ckx.ciphertext = make([]byte, len(encrypted)+2)
-	ckx.ciphertext[0] = byte(len(encrypted) >> 8)
-	ckx.ciphertext[1] = byte(len(encrypted))
-	copy(ckx.ciphertext[2:], encrypted)
-	return preMasterSecret, ckx, nil
-}
-
-// sha1Hash calculates a SHA1 hash over the given byte slices.
-func sha1Hash(slices [][]byte) []byte {
-	hsha1 := sha1.New()
-	for _, slice := range slices {
-		hsha1.Write(slice)
-	}
-	return hsha1.Sum(nil)
-}
-
-// md5SHA1Hash implements TLS 1.0's hybrid hash function which consists of the
-// concatenation of an MD5 and SHA1 hash.
-func md5SHA1Hash(slices [][]byte) []byte {
-	md5sha1 := make([]byte, md5.Size+sha1.Size)
-	hmd5 := md5.New()
-	for _, slice := range slices {
-		hmd5.Write(slice)
-	}
-	copy(md5sha1, hmd5.Sum(nil))
-	copy(md5sha1[md5.Size:], sha1Hash(slices))
-	return md5sha1
-}
-
-// hashForServerKeyExchange hashes the given slices and returns their digest
-// using the given hash function (for >= TLS 1.2) or using a default based on
-// the sigType (for earlier TLS versions). For Ed25519 signatures, which don't
-// do pre-hashing, it returns the concatenation of the slices.
-func hashForServerKeyExchange(sigType uint8, hashFunc crypto.Hash, version uint16, slices ...[]byte) []byte {
-	if sigType == signatureEd25519 || circlSchemeBySigType(sigType) != nil {
-		var signed []byte
-		for _, slice := range slices {
-			signed = append(signed, slice...)
-		}
-		return signed
-	}
-	if version >= VersionTLS12 {
-		h := hashFunc.New()
-		for _, slice := range slices {
-			h.Write(slice)
-		}
-		digest := h.Sum(nil)
-		return digest
-	}
-	if sigType == signatureECDSA {
-		return sha1Hash(slices)
-	}
-	return md5SHA1Hash(slices)
-}
-
-// ecdheKeyAgreement implements a TLS key agreement where the server
-// generates an ephemeral EC public/private key pair and signs it. The
-// pre-master secret is then calculated using ECDH. The signature may
-// be ECDSA, Ed25519 or RSA.
-type ecdheKeyAgreement struct {
-	version uint16
-	isRSA   bool
-	params  ecdheParameters
-
-	// ckx and preMasterSecret are generated in processServerKeyExchange
-	// and returned in generateClientKeyExchange.
-	ckx             *clientKeyExchangeMsg
-	preMasterSecret []byte
-}
-
-func (ka *ecdheKeyAgreement) generateServerKeyExchange(config *Config, cert *Certificate, clientHello *clientHelloMsg, hello *serverHelloMsg) (*serverKeyExchangeMsg, error) {
-	var curveID CurveID
-	for _, c := range clientHello.supportedCurves {
-		if config.supportsCurve(c) && curveIdToCirclScheme(c) == nil {
-			curveID = c
-			break
-		}
-	}
-
-	if curveID == 0 {
-		return nil, errors.New("tls: no supported elliptic curves offered")
-	}
-	if _, ok := curveForCurveID(curveID); curveID != X25519 && !ok {
-		return nil, errors.New("tls: CurvePreferences includes unsupported curve")
-	}
-
-	params, err := generateECDHEParameters(config.rand(), curveID)
-	if err != nil {
-		return nil, err
-	}
-	ka.params = params
-
-	// See RFC 4492, Section 5.4.
-	ecdhePublic := params.PublicKey()
-	serverECDHEParams := make([]byte, 1+2+1+len(ecdhePublic))
-	serverECDHEParams[0] = 3 // named curve
-	serverECDHEParams[1] = byte(curveID >> 8)
-	serverECDHEParams[2] = byte(curveID)
-	serverECDHEParams[3] = byte(len(ecdhePublic))
-	copy(serverECDHEParams[4:], ecdhePublic)
-
-	priv, ok := cert.PrivateKey.(crypto.Signer)
-	if !ok {
-		return nil, fmt.Errorf("tls: certificate private key of type %T does not implement crypto.Signer", cert.PrivateKey)
-	}
-
-	var signatureAlgorithm SignatureScheme
-	var sigType uint8
-	var sigHash crypto.Hash
-	if ka.version >= VersionTLS12 {
-		signatureAlgorithm, err = selectSignatureScheme(ka.version, cert, clientHello.supportedSignatureAlgorithms)
-		if err != nil {
-			return nil, err
-		}
-		sigType, sigHash, err = typeAndHashFromSignatureScheme(signatureAlgorithm)
-		if err != nil {
-			return nil, err
-		}
-	} else {
-		sigType, sigHash, err = legacyTypeAndHashFromPublicKey(priv.Public())
-		if err != nil {
-			return nil, err
-		}
-	}
-	if (sigType == signaturePKCS1v15 || sigType == signatureRSAPSS) != ka.isRSA {
-		return nil, errors.New("tls: certificate cannot be used with the selected cipher suite")
-	}
-
-	signed := hashForServerKeyExchange(sigType, sigHash, ka.version, clientHello.random, hello.random, serverECDHEParams)
-
-	signOpts := crypto.SignerOpts(sigHash)
-	if sigType == signatureRSAPSS {
-		signOpts = &rsa.PSSOptions{SaltLength: rsa.PSSSaltLengthEqualsHash, Hash: sigHash}
-	}
-	sig, err := priv.Sign(config.rand(), signed, signOpts)
-	if err != nil {
-		return nil, errors.New("tls: failed to sign ECDHE parameters: " + err.Error())
-	}
-
-	skx := new(serverKeyExchangeMsg)
-	sigAndHashLen := 0
-	if ka.version >= VersionTLS12 {
-		sigAndHashLen = 2
-	}
-	skx.key = make([]byte, len(serverECDHEParams)+sigAndHashLen+2+len(sig))
-	copy(skx.key, serverECDHEParams)
-	k := skx.key[len(serverECDHEParams):]
-	if ka.version >= VersionTLS12 {
-		k[0] = byte(signatureAlgorithm >> 8)
-		k[1] = byte(signatureAlgorithm)
-		k = k[2:]
-	}
-	k[0] = byte(len(sig) >> 8)
-	k[1] = byte(len(sig))
-	copy(k[2:], sig)
-
-	return skx, nil
-}
-
-func (ka *ecdheKeyAgreement) processClientKeyExchange(config *Config, cert *Certificate, ckx *clientKeyExchangeMsg, version uint16) ([]byte, error) {
-	if len(ckx.ciphertext) == 0 || int(ckx.ciphertext[0]) != len(ckx.ciphertext)-1 {
-		return nil, errClientKeyExchange
-	}
-
-	preMasterSecret := ka.params.SharedKey(ckx.ciphertext[1:])
-	if preMasterSecret == nil {
-		return nil, errClientKeyExchange
-	}
-
-	return preMasterSecret, nil
-}
-
-func (ka *ecdheKeyAgreement) processServerKeyExchange(config *Config, clientHello *clientHelloMsg, serverHello *serverHelloMsg, cert *x509.Certificate, skx *serverKeyExchangeMsg) error {
-	if len(skx.key) < 4 {
-		return errServerKeyExchange
-	}
-	if skx.key[0] != 3 { // named curve
-		return errors.New("tls: server selected unsupported curve")
-	}
-	curveID := CurveID(skx.key[1])<<8 | CurveID(skx.key[2])
-
-	publicLen := int(skx.key[3])
-	if publicLen+4 > len(skx.key) {
-		return errServerKeyExchange
-	}
-	serverECDHEParams := skx.key[:4+publicLen]
-	publicKey := serverECDHEParams[4:]
-
-	sig := skx.key[4+publicLen:]
-	if len(sig) < 2 {
-		return errServerKeyExchange
-	}
-
-	if _, ok := curveForCurveID(curveID); curveID != X25519 && !ok {
-		return errors.New("tls: server selected unsupported curve")
-	}
-
-	params, err := generateECDHEParameters(config.rand(), curveID)
-	if err != nil {
-		return err
-	}
-	ka.params = params
-
-	ka.preMasterSecret = params.SharedKey(publicKey)
-	if ka.preMasterSecret == nil {
-		return errServerKeyExchange
-	}
-
-	ourPublicKey := params.PublicKey()
-	ka.ckx = new(clientKeyExchangeMsg)
-	ka.ckx.ciphertext = make([]byte, 1+len(ourPublicKey))
-	ka.ckx.ciphertext[0] = byte(len(ourPublicKey))
-	copy(ka.ckx.ciphertext[1:], ourPublicKey)
-
-	var sigType uint8
-	var sigHash crypto.Hash
-	if ka.version >= VersionTLS12 {
-		signatureAlgorithm := SignatureScheme(sig[0])<<8 | SignatureScheme(sig[1])
-		sig = sig[2:]
-		if len(sig) < 2 {
-			return errServerKeyExchange
-		}
-
-		if !isSupportedSignatureAlgorithm(signatureAlgorithm, clientHello.supportedSignatureAlgorithms) {
-			return errors.New("tls: certificate used with invalid signature algorithm")
-		}
-		sigType, sigHash, err = typeAndHashFromSignatureScheme(signatureAlgorithm)
-		if err != nil {
-			return err
-		}
-	} else {
-		sigType, sigHash, err = legacyTypeAndHashFromPublicKey(cert.PublicKey)
-		if err != nil {
-			return err
-		}
-	}
-	if (sigType == signaturePKCS1v15 || sigType == signatureRSAPSS) != ka.isRSA {
-		return errServerKeyExchange
-	}
-
-	sigLen := int(sig[0])<<8 | int(sig[1])
-	if sigLen+2 != len(sig) {
-		return errServerKeyExchange
-	}
-	sig = sig[2:]
-
-	signed := hashForServerKeyExchange(sigType, sigHash, ka.version, clientHello.random, serverHello.random, serverECDHEParams)
-	if err := verifyHandshakeSignature(sigType, cert.PublicKey, sigHash, signed, sig); err != nil {
-		return errors.New("tls: invalid signature by the server certificate: " + err.Error())
-	}
-	return nil
-}
-
-func (ka *ecdheKeyAgreement) generateClientKeyExchange(config *Config, clientHello *clientHelloMsg, cert *x509.Certificate) ([]byte, *clientKeyExchangeMsg, error) {
-	if ka.ckx == nil {
-		return nil, nil, errors.New("tls: missing ServerKeyExchange message")
-	}
-
-	return ka.preMasterSecret, ka.ckx, nil
-}

transport/cloudflaretls/key_schedule.go

@@ -1,199 +0,0 @@
-// Copyright 2018 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package tls
-
-import (
-	"crypto/elliptic"
-	"crypto/hmac"
-	"errors"
-	"hash"
-	"io"
-	"math/big"
-
-	"golang.org/x/crypto/cryptobyte"
-	"golang.org/x/crypto/curve25519"
-	"golang.org/x/crypto/hkdf"
-)
-
-// This file contains the functions necessary to compute the TLS 1.3 key
-// schedule. See RFC 8446, Section 7.
-
-const (
-	resumptionBinderLabel         = "res binder"
-	clientHandshakeTrafficLabel   = "c hs traffic"
-	serverHandshakeTrafficLabel   = "s hs traffic"
-	clientApplicationTrafficLabel = "c ap traffic"
-	serverApplicationTrafficLabel = "s ap traffic"
-	exporterLabel                 = "exp master"
-	resumptionLabel               = "res master"
-	trafficUpdateLabel            = "traffic upd"
-)
-
-// expandLabel implements HKDF-Expand-Label from RFC 8446, Section 7.1.
-func (c *cipherSuiteTLS13) expandLabel(secret []byte, label string, context []byte, length int) []byte {
-	var hkdfLabel cryptobyte.Builder
-	hkdfLabel.AddUint16(uint16(length))
-	hkdfLabel.AddUint8LengthPrefixed(func(b *cryptobyte.Builder) {
-		b.AddBytes([]byte("tls13 "))
-		b.AddBytes([]byte(label))
-	})
-	hkdfLabel.AddUint8LengthPrefixed(func(b *cryptobyte.Builder) {
-		b.AddBytes(context)
-	})
-	out := make([]byte, length)
-	n, err := hkdf.Expand(c.hash.New, secret, hkdfLabel.BytesOrPanic()).Read(out)
-	if err != nil || n != length {
-		panic("tls: HKDF-Expand-Label invocation failed unexpectedly")
-	}
-	return out
-}
-
-// deriveSecret implements Derive-Secret from RFC 8446, Section 7.1.
-func (c *cipherSuiteTLS13) deriveSecret(secret []byte, label string, transcript hash.Hash) []byte {
-	if transcript == nil {
-		transcript = c.hash.New()
-	}
-	return c.expandLabel(secret, label, transcript.Sum(nil), c.hash.Size())
-}
-
-// extract implements HKDF-Extract with the cipher suite hash.
-func (c *cipherSuiteTLS13) extract(newSecret, currentSecret []byte) []byte {
-	if newSecret == nil {
-		newSecret = make([]byte, c.hash.Size())
-	}
-	return hkdf.Extract(c.hash.New, newSecret, currentSecret)
-}
-
-// nextTrafficSecret generates the next traffic secret, given the current one,
-// according to RFC 8446, Section 7.2.
-func (c *cipherSuiteTLS13) nextTrafficSecret(trafficSecret []byte) []byte {
-	return c.expandLabel(trafficSecret, trafficUpdateLabel, nil, c.hash.Size())
-}
-
-// trafficKey generates traffic keys according to RFC 8446, Section 7.3.
-func (c *cipherSuiteTLS13) trafficKey(trafficSecret []byte) (key, iv []byte) {
-	key = c.expandLabel(trafficSecret, "key", nil, c.keyLen)
-	iv = c.expandLabel(trafficSecret, "iv", nil, aeadNonceLength)
-	return
-}
-
-// finishedHash generates the Finished verify_data or PskBinderEntry according
-// to RFC 8446, Section 4.4.4. See sections 4.4 and 4.2.11.2 for the baseKey
-// selection.
-func (c *cipherSuiteTLS13) finishedHash(baseKey []byte, transcript hash.Hash) []byte {
-	finishedKey := c.expandLabel(baseKey, "finished", nil, c.hash.Size())
-	verifyData := hmac.New(c.hash.New, finishedKey)
-	verifyData.Write(transcript.Sum(nil))
-	return verifyData.Sum(nil)
-}
-
-// exportKeyingMaterial implements RFC5705 exporters for TLS 1.3 according to
-// RFC 8446, Section 7.5.
-func (c *cipherSuiteTLS13) exportKeyingMaterial(masterSecret []byte, transcript hash.Hash) func(string, []byte, int) ([]byte, error) {
-	expMasterSecret := c.deriveSecret(masterSecret, exporterLabel, transcript)
-	return func(label string, context []byte, length int) ([]byte, error) {
-		secret := c.deriveSecret(expMasterSecret, label, nil)
-		h := c.hash.New()
-		h.Write(context)
-		return c.expandLabel(secret, "exporter", h.Sum(nil), length), nil
-	}
-}
-
-// ecdheParameters implements Diffie-Hellman with either NIST curves or X25519,
-// according to RFC 8446, Section 4.2.8.2.
-type ecdheParameters interface {
-	CurveID() CurveID
-	PublicKey() []byte
-	SharedKey(peerPublicKey []byte) []byte
-}
-
-func generateECDHEParameters(rand io.Reader, curveID CurveID) (ecdheParameters, error) {
-	if curveID == X25519 {
-		privateKey := make([]byte, curve25519.ScalarSize)
-		if _, err := io.ReadFull(rand, privateKey); err != nil {
-			return nil, err
-		}
-		publicKey, err := curve25519.X25519(privateKey, curve25519.Basepoint)
-		if err != nil {
-			return nil, err
-		}
-		return &x25519Parameters{privateKey: privateKey, publicKey: publicKey}, nil
-	}
-
-	curve, ok := curveForCurveID(curveID)
-	if !ok {
-		return nil, errors.New("tls: internal error: unsupported curve")
-	}
-
-	p := &nistParameters{curveID: curveID}
-	var err error
-	p.privateKey, p.x, p.y, err = elliptic.GenerateKey(curve, rand)
-	if err != nil {
-		return nil, err
-	}
-	return p, nil
-}
-
-func curveForCurveID(id CurveID) (elliptic.Curve, bool) {
-	switch id {
-	case CurveP256:
-		return elliptic.P256(), true
-	case CurveP384:
-		return elliptic.P384(), true
-	case CurveP521:
-		return elliptic.P521(), true
-	default:
-		return nil, false
-	}
-}
-
-type nistParameters struct {
-	privateKey []byte
-	x, y       *big.Int // public key
-	curveID    CurveID
-}
-
-func (p *nistParameters) CurveID() CurveID {
-	return p.curveID
-}
-
-func (p *nistParameters) PublicKey() []byte {
-	curve, _ := curveForCurveID(p.curveID)
-	return elliptic.Marshal(curve, p.x, p.y)
-}
-
-func (p *nistParameters) SharedKey(peerPublicKey []byte) []byte {
-	curve, _ := curveForCurveID(p.curveID)
-	// Unmarshal also checks whether the given point is on the curve.
-	x, y := elliptic.Unmarshal(curve, peerPublicKey)
-	if x == nil {
-		return nil
-	}
-
-	xShared, _ := curve.ScalarMult(x, y, p.privateKey)
-	sharedKey := make([]byte, (curve.Params().BitSize+7)/8)
-	return xShared.FillBytes(sharedKey)
-}
-
-type x25519Parameters struct {
-	privateKey []byte
-	publicKey  []byte
-}
-
-func (p *x25519Parameters) CurveID() CurveID {
-	return X25519
-}
-
-func (p *x25519Parameters) PublicKey() []byte {
-	return p.publicKey[:]
-}
-
-func (p *x25519Parameters) SharedKey(peerPublicKey []byte) []byte {
-	sharedKey, err := curve25519.X25519(p.privateKey, peerPublicKey)
-	if err != nil {
-		return nil
-	}
-	return sharedKey
-}

transport/cloudflaretls/prf.go

@@ -1,285 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package tls
-
-import (
-	"crypto"
-	"crypto/hmac"
-	"crypto/md5"
-	"crypto/sha1"
-	"crypto/sha256"
-	"crypto/sha512"
-	"errors"
-	"fmt"
-	"hash"
-)
-
-// Split a premaster secret in two as specified in RFC 4346, Section 5.
-func splitPreMasterSecret(secret []byte) (s1, s2 []byte) {
-	s1 = secret[0 : (len(secret)+1)/2]
-	s2 = secret[len(secret)/2:]
-	return
-}
-
-// pHash implements the P_hash function, as defined in RFC 4346, Section 5.
-func pHash(result, secret, seed []byte, hash func() hash.Hash) {
-	h := hmac.New(hash, secret)
-	h.Write(seed)
-	a := h.Sum(nil)
-
-	j := 0
-	for j < len(result) {
-		h.Reset()
-		h.Write(a)
-		h.Write(seed)
-		b := h.Sum(nil)
-		copy(result[j:], b)
-		j += len(b)
-
-		h.Reset()
-		h.Write(a)
-		a = h.Sum(nil)
-	}
-}
-
-// prf10 implements the TLS 1.0 pseudo-random function, as defined in RFC 2246, Section 5.
-func prf10(result, secret, label, seed []byte) {
-	hashSHA1 := sha1.New
-	hashMD5 := md5.New
-
-	labelAndSeed := make([]byte, len(label)+len(seed))
-	copy(labelAndSeed, label)
-	copy(labelAndSeed[len(label):], seed)
-
-	s1, s2 := splitPreMasterSecret(secret)
-	pHash(result, s1, labelAndSeed, hashMD5)
-	result2 := make([]byte, len(result))
-	pHash(result2, s2, labelAndSeed, hashSHA1)
-
-	for i, b := range result2 {
-		result[i] ^= b
-	}
-}
-
-// prf12 implements the TLS 1.2 pseudo-random function, as defined in RFC 5246, Section 5.
-func prf12(hashFunc func() hash.Hash) func(result, secret, label, seed []byte) {
-	return func(result, secret, label, seed []byte) {
-		labelAndSeed := make([]byte, len(label)+len(seed))
-		copy(labelAndSeed, label)
-		copy(labelAndSeed[len(label):], seed)
-
-		pHash(result, secret, labelAndSeed, hashFunc)
-	}
-}
-
-const (
-	masterSecretLength   = 48 // Length of a master secret in TLS 1.1.
-	finishedVerifyLength = 12 // Length of verify_data in a Finished message.
-)
-
-var (
-	masterSecretLabel   = []byte("master secret")
-	keyExpansionLabel   = []byte("key expansion")
-	clientFinishedLabel = []byte("client finished")
-	serverFinishedLabel = []byte("server finished")
-)
-
-func prfAndHashForVersion(version uint16, suite *cipherSuite) (func(result, secret, label, seed []byte), crypto.Hash) {
-	switch version {
-	case VersionTLS10, VersionTLS11:
-		return prf10, crypto.Hash(0)
-	case VersionTLS12:
-		if suite.flags&suiteSHA384 != 0 {
-			return prf12(sha512.New384), crypto.SHA384
-		}
-		return prf12(sha256.New), crypto.SHA256
-	default:
-		panic("unknown version")
-	}
-}
-
-func prfForVersion(version uint16, suite *cipherSuite) func(result, secret, label, seed []byte) {
-	prf, _ := prfAndHashForVersion(version, suite)
-	return prf
-}
-
-// masterFromPreMasterSecret generates the master secret from the pre-master
-// secret. See RFC 5246, Section 8.1.
-func masterFromPreMasterSecret(version uint16, suite *cipherSuite, preMasterSecret, clientRandom, serverRandom []byte) []byte {
-	seed := make([]byte, 0, len(clientRandom)+len(serverRandom))
-	seed = append(seed, clientRandom...)
-	seed = append(seed, serverRandom...)
-
-	masterSecret := make([]byte, masterSecretLength)
-	prfForVersion(version, suite)(masterSecret, preMasterSecret, masterSecretLabel, seed)
-	return masterSecret
-}
-
-// keysFromMasterSecret generates the connection keys from the master
-// secret, given the lengths of the MAC key, cipher key and IV, as defined in
-// RFC 2246, Section 6.3.
-func keysFromMasterSecret(version uint16, suite *cipherSuite, masterSecret, clientRandom, serverRandom []byte, macLen, keyLen, ivLen int) (clientMAC, serverMAC, clientKey, serverKey, clientIV, serverIV []byte) {
-	seed := make([]byte, 0, len(serverRandom)+len(clientRandom))
-	seed = append(seed, serverRandom...)
-	seed = append(seed, clientRandom...)
-
-	n := 2*macLen + 2*keyLen + 2*ivLen
-	keyMaterial := make([]byte, n)
-	prfForVersion(version, suite)(keyMaterial, masterSecret, keyExpansionLabel, seed)
-	clientMAC = keyMaterial[:macLen]
-	keyMaterial = keyMaterial[macLen:]
-	serverMAC = keyMaterial[:macLen]
-	keyMaterial = keyMaterial[macLen:]
-	clientKey = keyMaterial[:keyLen]
-	keyMaterial = keyMaterial[keyLen:]
-	serverKey = keyMaterial[:keyLen]
-	keyMaterial = keyMaterial[keyLen:]
-	clientIV = keyMaterial[:ivLen]
-	keyMaterial = keyMaterial[ivLen:]
-	serverIV = keyMaterial[:ivLen]
-	return
-}
-
-func newFinishedHash(version uint16, cipherSuite *cipherSuite) finishedHash {
-	var buffer []byte
-	if version >= VersionTLS12 {
-		buffer = []byte{}
-	}
-
-	prf, hash := prfAndHashForVersion(version, cipherSuite)
-	if hash != 0 {
-		return finishedHash{hash.New(), hash.New(), nil, nil, buffer, version, prf}
-	}
-
-	return finishedHash{sha1.New(), sha1.New(), md5.New(), md5.New(), buffer, version, prf}
-}
-
-// A finishedHash calculates the hash of a set of handshake messages suitable
-// for including in a Finished message.
-type finishedHash struct {
-	client hash.Hash
-	server hash.Hash
-
-	// Prior to TLS 1.2, an additional MD5 hash is required.
-	clientMD5 hash.Hash
-	serverMD5 hash.Hash
-
-	// In TLS 1.2, a full buffer is sadly required.
-	buffer []byte
-
-	version uint16
-	prf     func(result, secret, label, seed []byte)
-}
-
-func (h *finishedHash) Write(msg []byte) (n int, err error) {
-	h.client.Write(msg)
-	h.server.Write(msg)
-
-	if h.version < VersionTLS12 {
-		h.clientMD5.Write(msg)
-		h.serverMD5.Write(msg)
-	}
-
-	if h.buffer != nil {
-		h.buffer = append(h.buffer, msg...)
-	}
-
-	return len(msg), nil
-}
-
-func (h finishedHash) Sum() []byte {
-	if h.version >= VersionTLS12 {
-		return h.client.Sum(nil)
-	}
-
-	out := make([]byte, 0, md5.Size+sha1.Size)
-	out = h.clientMD5.Sum(out)
-	return h.client.Sum(out)
-}
-
-// clientSum returns the contents of the verify_data member of a client's
-// Finished message.
-func (h finishedHash) clientSum(masterSecret []byte) []byte {
-	out := make([]byte, finishedVerifyLength)
-	h.prf(out, masterSecret, clientFinishedLabel, h.Sum())
-	return out
-}
-
-// serverSum returns the contents of the verify_data member of a server's
-// Finished message.
-func (h finishedHash) serverSum(masterSecret []byte) []byte {
-	out := make([]byte, finishedVerifyLength)
-	h.prf(out, masterSecret, serverFinishedLabel, h.Sum())
-	return out
-}
-
-// hashForClientCertificate returns the handshake messages so far, pre-hashed if
-// necessary, suitable for signing by a TLS client certificate.
-func (h finishedHash) hashForClientCertificate(sigType uint8, hashAlg crypto.Hash, masterSecret []byte) []byte {
-	if (h.version >= VersionTLS12 || sigType == signatureEd25519 || circlSchemeBySigType(sigType) != nil) && h.buffer == nil {
-		panic("tls: handshake hash for a client certificate requested after discarding the handshake buffer")
-	}
-
-	if sigType == signatureEd25519 || circlSchemeBySigType(sigType) != nil {
-		return h.buffer
-	}
-
-	if h.version >= VersionTLS12 {
-		hash := hashAlg.New()
-		hash.Write(h.buffer)
-		return hash.Sum(nil)
-	}
-
-	if sigType == signatureECDSA {
-		return h.server.Sum(nil)
-	}
-
-	return h.Sum()
-}
-
-// discardHandshakeBuffer is called when there is no more need to
-// buffer the entirety of the handshake messages.
-func (h *finishedHash) discardHandshakeBuffer() {
-	h.buffer = nil
-}
-
-// noExportedKeyingMaterial is used as a value of
-// ConnectionState.ekm when renegotiation is enabled and thus
-// we wish to fail all key-material export requests.
-func noExportedKeyingMaterial(label string, context []byte, length int) ([]byte, error) {
-	return nil, errors.New("crypto/tls: ExportKeyingMaterial is unavailable when renegotiation is enabled")
-}
-
-// ekmFromMasterSecret generates exported keying material as defined in RFC 5705.
-func ekmFromMasterSecret(version uint16, suite *cipherSuite, masterSecret, clientRandom, serverRandom []byte) func(string, []byte, int) ([]byte, error) {
-	return func(label string, context []byte, length int) ([]byte, error) {
-		switch label {
-		case "client finished", "server finished", "master secret", "key expansion":
-			// These values are reserved and may not be used.
-			return nil, fmt.Errorf("crypto/tls: reserved ExportKeyingMaterial label: %s", label)
-		}
-
-		seedLen := len(serverRandom) + len(clientRandom)
-		if context != nil {
-			seedLen += 2 + len(context)
-		}
-		seed := make([]byte, 0, seedLen)
-
-		seed = append(seed, clientRandom...)
-		seed = append(seed, serverRandom...)
-
-		if context != nil {
-			if len(context) >= 1<<16 {
-				return nil, fmt.Errorf("crypto/tls: ExportKeyingMaterial context too long")
-			}
-			seed = append(seed, byte(len(context)>>8), byte(len(context)))
-			seed = append(seed, context...)
-		}
-
-		keyMaterial := make([]byte, length)
-		prfForVersion(version, suite)(keyMaterial, masterSecret, []byte(label), seed)
-		return keyMaterial, nil
-	}
-}

transport/cloudflaretls/ticket.go

@@ -1,185 +0,0 @@
-// Copyright 2012 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package tls
-
-import (
-	"bytes"
-	"crypto/aes"
-	"crypto/cipher"
-	"crypto/hmac"
-	"crypto/sha256"
-	"crypto/subtle"
-	"errors"
-	"io"
-
-	"golang.org/x/crypto/cryptobyte"
-)
-
-// sessionState contains the information that is serialized into a session
-// ticket in order to later resume a connection.
-type sessionState struct {
-	vers         uint16
-	cipherSuite  uint16
-	createdAt    uint64
-	masterSecret []byte // opaque master_secret<1..2^16-1>;
-	// struct { opaque certificate<1..2^24-1> } Certificate;
-	certificates [][]byte // Certificate certificate_list<0..2^24-1>;
-
-	// usedOldKey is true if the ticket from which this session came from
-	// was encrypted with an older key and thus should be refreshed.
-	usedOldKey bool
-}
-
-func (m *sessionState) marshal() []byte {
-	var b cryptobyte.Builder
-	b.AddUint16(m.vers)
-	b.AddUint16(m.cipherSuite)
-	addUint64(&b, m.createdAt)
-	b.AddUint16LengthPrefixed(func(b *cryptobyte.Builder) {
-		b.AddBytes(m.masterSecret)
-	})
-	b.AddUint24LengthPrefixed(func(b *cryptobyte.Builder) {
-		for _, cert := range m.certificates {
-			b.AddUint24LengthPrefixed(func(b *cryptobyte.Builder) {
-				b.AddBytes(cert)
-			})
-		}
-	})
-	return b.BytesOrPanic()
-}
-
-func (m *sessionState) unmarshal(data []byte) bool {
-	*m = sessionState{usedOldKey: m.usedOldKey}
-	s := cryptobyte.String(data)
-	if ok := s.ReadUint16(&m.vers) &&
-		s.ReadUint16(&m.cipherSuite) &&
-		readUint64(&s, &m.createdAt) &&
-		readUint16LengthPrefixed(&s, &m.masterSecret) &&
-		len(m.masterSecret) != 0; !ok {
-		return false
-	}
-	var certList cryptobyte.String
-	if !s.ReadUint24LengthPrefixed(&certList) {
-		return false
-	}
-	for !certList.Empty() {
-		var cert []byte
-		if !readUint24LengthPrefixed(&certList, &cert) {
-			return false
-		}
-		m.certificates = append(m.certificates, cert)
-	}
-	return s.Empty()
-}
-
-// sessionStateTLS13 is the content of a TLS 1.3 session ticket. Its first
-// version (revision = 0) doesn't carry any of the information needed for 0-RTT
-// validation and the nonce is always empty.
-type sessionStateTLS13 struct {
-	// uint8 version  = 0x0304;
-	// uint8 revision = 0;
-	cipherSuite      uint16
-	createdAt        uint64
-	resumptionSecret []byte      // opaque resumption_master_secret<1..2^8-1>;
-	certificate      Certificate // CertificateEntry certificate_list<0..2^24-1>;
-}
-
-func (m *sessionStateTLS13) marshal() []byte {
-	var b cryptobyte.Builder
-	b.AddUint16(VersionTLS13)
-	b.AddUint8(0) // revision
-	b.AddUint16(m.cipherSuite)
-	addUint64(&b, m.createdAt)
-	b.AddUint8LengthPrefixed(func(b *cryptobyte.Builder) {
-		b.AddBytes(m.resumptionSecret)
-	})
-	marshalCertificate(&b, m.certificate)
-	return b.BytesOrPanic()
-}
-
-func (m *sessionStateTLS13) unmarshal(data []byte) bool {
-	*m = sessionStateTLS13{}
-	s := cryptobyte.String(data)
-	var version uint16
-	var revision uint8
-	return s.ReadUint16(&version) &&
-		version == VersionTLS13 &&
-		s.ReadUint8(&revision) &&
-		revision == 0 &&
-		s.ReadUint16(&m.cipherSuite) &&
-		readUint64(&s, &m.createdAt) &&
-		readUint8LengthPrefixed(&s, &m.resumptionSecret) &&
-		len(m.resumptionSecret) != 0 &&
-		unmarshalCertificate(&s, &m.certificate) &&
-		s.Empty()
-}
-
-func (c *Conn) encryptTicket(state []byte) ([]byte, error) {
-	if len(c.ticketKeys) == 0 {
-		return nil, errors.New("tls: internal error: session ticket keys unavailable")
-	}
-
-	encrypted := make([]byte, ticketKeyNameLen+aes.BlockSize+len(state)+sha256.Size)
-	keyName := encrypted[:ticketKeyNameLen]
-	iv := encrypted[ticketKeyNameLen : ticketKeyNameLen+aes.BlockSize]
-	macBytes := encrypted[len(encrypted)-sha256.Size:]
-
-	if _, err := io.ReadFull(c.config.rand(), iv); err != nil {
-		return nil, err
-	}
-	key := c.ticketKeys[0]
-	copy(keyName, key.keyName[:])
-	block, err := aes.NewCipher(key.aesKey[:])
-	if err != nil {
-		return nil, errors.New("tls: failed to create cipher while encrypting ticket: " + err.Error())
-	}
-	cipher.NewCTR(block, iv).XORKeyStream(encrypted[ticketKeyNameLen+aes.BlockSize:], state)
-
-	mac := hmac.New(sha256.New, key.hmacKey[:])
-	mac.Write(encrypted[:len(encrypted)-sha256.Size])
-	mac.Sum(macBytes[:0])
-
-	return encrypted, nil
-}
-
-func (c *Conn) decryptTicket(encrypted []byte) (plaintext []byte, usedOldKey bool) {
-	if len(encrypted) < ticketKeyNameLen+aes.BlockSize+sha256.Size {
-		return nil, false
-	}
-
-	keyName := encrypted[:ticketKeyNameLen]
-	iv := encrypted[ticketKeyNameLen : ticketKeyNameLen+aes.BlockSize]
-	macBytes := encrypted[len(encrypted)-sha256.Size:]
-	ciphertext := encrypted[ticketKeyNameLen+aes.BlockSize : len(encrypted)-sha256.Size]
-
-	keyIndex := -1
-	for i, candidateKey := range c.ticketKeys {
-		if bytes.Equal(keyName, candidateKey.keyName[:]) {
-			keyIndex = i
-			break
-		}
-	}
-	if keyIndex == -1 {
-		return nil, false
-	}
-	key := &c.ticketKeys[keyIndex]
-
-	mac := hmac.New(sha256.New, key.hmacKey[:])
-	mac.Write(encrypted[:len(encrypted)-sha256.Size])
-	expected := mac.Sum(nil)
-
-	if subtle.ConstantTimeCompare(macBytes, expected) != 1 {
-		return nil, false
-	}
-
-	block, err := aes.NewCipher(key.aesKey[:])
-	if err != nil {
-		return nil, false
-	}
-	plaintext = make([]byte, len(ciphertext))
-	cipher.NewCTR(block, iv).XORKeyStream(plaintext, ciphertext)
-
-	return plaintext, keyIndex > 0
-}

transport/cloudflaretls/tls.go

@@ -1,410 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package tls partially implements TLS 1.2, as specified in RFC 5246,
-// and TLS 1.3, as specified in RFC 8446.
-//
-// This package implements the "Encrypted ClientHello (ECH)" extension, as
-// specified by draft-ietf-tls-esni-13. This extension allows the client to
-// encrypt its ClientHello to the public key of an ECH-service provider, known
-// as the client-facing server. If successful, then the client-facing server
-// forwards the decrypted ClientHello to the intended recipient, known as the
-// backend server. The goal of this mechanism is to ensure that connections made
-// to backend servers are indistinguishable from one another.
-//
-// This package implements the "Delegated Credentials" extension, as
-// specified by draft-ietf-tls-subcerts-10. This extension allows the usage
-// of a limited delegation mechanism that allows a TLS peer to issue its own
-// credentials within the scope of a certificate issued by an external
-// CA. These credentials only enable the recipient of the delegation to
-// speak for names that the CA has authorized. If the client or server supports
-// this extension, then the server or client may use a "delegated credential"
-// as the signing key in the handshake. A delegated credential is a short lived
-// public/secret key pair delegated to the peer by an entity trusted by the
-// corresponding peer. This allows a reverse proxy to terminate a TLS connection
-// on behalf of the entity. Credentials can't be revoked; in order to
-// mitigate risk in case the reverse proxy is compromised, the credential is only
-// valid for a short time (days, hours, or even minutes).
-package tls
-
-// BUG(cjpatton): In order to achieve its security goal, the ECH extension
-// requires padding in order to ensure that the length of handshake messages
-// doesn't depend on who terminates the connection. This package does not yet
-// implement server-side padding: see
-// https://github.com/tlswg/draft-ietf-tls-esni/issues/264.
-
-// BUG(cjpatton): The interaction of the ECH extension with PSK has not yet been
-// fully vetted. For now, the server disables session tickets if ECH is enabled.
-
-// BUG(cjpatton): Upon ECH rejection, if retry configurations are provided, then
-// the client is expected to retry the connection. Otherwise, it may regard ECH
-// as being securely disabled by the client-facing server. The client in this
-// package does not attempt to retry the handshake.
-
-// BUG(cjpatton): If the client offers the ECH extension and the client-facing
-// server rejects it, then only the client-facing server is authenticated. In
-// particular, the client is expected to respond to a CertificateRequest with an
-// empty certificate. This package does not yet implement this behavior.
-
-// BUG(agl): The crypto/tls package only implements some countermeasures
-// against Lucky13 attacks on CBC-mode encryption, and only on SHA1
-// variants. See http://www.isg.rhul.ac.uk/tls/TLStiming.pdf and
-// https://www.imperialviolet.org/2013/02/04/luckythirteen.html.
-
-import (
-	"bytes"
-	"context"
-	"crypto"
-	"crypto/ecdsa"
-	"crypto/ed25519"
-	"crypto/rsa"
-	"crypto/x509"
-	"encoding/pem"
-	"errors"
-	"fmt"
-	"net"
-	"os"
-	"strings"
-
-	circlSign "github.com/cloudflare/circl/sign"
-)
-
-// Server returns a new TLS server side connection
-// using conn as the underlying transport.
-// The configuration config must be non-nil and must include
-// at least one certificate or else set GetCertificate.
-func Server(conn net.Conn, config *Config) *Conn {
-	c := &Conn{
-		conn:   conn,
-		config: config,
-	}
-	c.handshakeFn = c.serverHandshake
-	return c
-}
-
-// Client returns a new TLS client side connection
-// using conn as the underlying transport.
-// The config cannot be nil: users must set either ServerName or
-// InsecureSkipVerify in the config.
-func Client(conn net.Conn, config *Config) *Conn {
-	c := &Conn{
-		conn:     conn,
-		config:   config,
-		isClient: true,
-	}
-	c.handshakeFn = c.clientHandshake
-	return c
-}
-
-// A listener implements a network listener (net.Listener) for TLS connections.
-type listener struct {
-	net.Listener
-	config *Config
-}
-
-// Accept waits for and returns the next incoming TLS connection.
-// The returned connection is of type *Conn.
-func (l *listener) Accept() (net.Conn, error) {
-	c, err := l.Listener.Accept()
-	if err != nil {
-		return nil, err
-	}
-	return Server(c, l.config), nil
-}
-
-// NewListener creates a Listener which accepts connections from an inner
-// Listener and wraps each connection with Server.
-// The configuration config must be non-nil and must include
-// at least one certificate or else set GetCertificate.
-func NewListener(inner net.Listener, config *Config) net.Listener {
-	l := new(listener)
-	l.Listener = inner
-	l.config = config
-	return l
-}
-
-// Listen creates a TLS listener accepting connections on the
-// given network address using net.Listen.
-// The configuration config must be non-nil and must include
-// at least one certificate or else set GetCertificate.
-func Listen(network, laddr string, config *Config) (net.Listener, error) {
-	if config == nil || len(config.Certificates) == 0 &&
-		config.GetCertificate == nil && config.GetConfigForClient == nil {
-		return nil, errors.New("tls: neither Certificates, GetCertificate, nor GetConfigForClient set in Config")
-	}
-	l, err := net.Listen(network, laddr)
-	if err != nil {
-		return nil, err
-	}
-	return NewListener(l, config), nil
-}
-
-type timeoutError struct{}
-
-func (timeoutError) Error() string   { return "tls: DialWithDialer timed out" }
-func (timeoutError) Timeout() bool   { return true }
-func (timeoutError) Temporary() bool { return true }
-
-// DialWithDialer connects to the given network address using dialer.Dial and
-// then initiates a TLS handshake, returning the resulting TLS connection. Any
-// timeout or deadline given in the dialer apply to connection and TLS
-// handshake as a whole.
-//
-// DialWithDialer interprets a nil configuration as equivalent to the zero
-// configuration; see the documentation of Config for the defaults.
-//
-// DialWithDialer uses context.Background internally; to specify the context,
-// use Dialer.DialContext with NetDialer set to the desired dialer.
-func DialWithDialer(dialer *net.Dialer, network, addr string, config *Config) (*Conn, error) {
-	return dial(context.Background(), dialer, network, addr, config)
-}
-
-func dial(ctx context.Context, netDialer *net.Dialer, network, addr string, config *Config) (*Conn, error) {
-	if netDialer.Timeout != 0 {
-		var cancel context.CancelFunc
-		ctx, cancel = context.WithTimeout(ctx, netDialer.Timeout)
-		defer cancel()
-	}
-
-	if !netDialer.Deadline.IsZero() {
-		var cancel context.CancelFunc
-		ctx, cancel = context.WithDeadline(ctx, netDialer.Deadline)
-		defer cancel()
-	}
-
-	rawConn, err := netDialer.DialContext(ctx, network, addr)
-	if err != nil {
-		return nil, err
-	}
-
-	colonPos := strings.LastIndex(addr, ":")
-	if colonPos == -1 {
-		colonPos = len(addr)
-	}
-	hostname := addr[:colonPos]
-
-	if config == nil {
-		config = defaultConfig()
-	}
-	// If no ServerName is set, infer the ServerName
-	// from the hostname we're connecting to.
-	if config.ServerName == "" {
-		// Make a copy to avoid polluting argument or default.
-		c := config.Clone()
-		c.ServerName = hostname
-		config = c
-	}
-
-	conn := Client(rawConn, config)
-	if err := conn.HandshakeContext(ctx); err != nil {
-		rawConn.Close()
-		return nil, err
-	}
-	return conn, nil
-}
-
-// Dial connects to the given network address using net.Dial
-// and then initiates a TLS handshake, returning the resulting
-// TLS connection.
-// Dial interprets a nil configuration as equivalent to
-// the zero configuration; see the documentation of Config
-// for the defaults.
-func Dial(network, addr string, config *Config) (*Conn, error) {
-	return DialWithDialer(new(net.Dialer), network, addr, config)
-}
-
-// Dialer dials TLS connections given a configuration and a Dialer for the
-// underlying connection.
-type Dialer struct {
-	// NetDialer is the optional dialer to use for the TLS connections'
-	// underlying TCP connections.
-	// A nil NetDialer is equivalent to the net.Dialer zero value.
-	NetDialer *net.Dialer
-
-	// Config is the TLS configuration to use for new connections.
-	// A nil configuration is equivalent to the zero
-	// configuration; see the documentation of Config for the
-	// defaults.
-	Config *Config
-}
-
-// Dial connects to the given network address and initiates a TLS
-// handshake, returning the resulting TLS connection.
-//
-// The returned Conn, if any, will always be of type *Conn.
-//
-// Dial uses context.Background internally; to specify the context,
-// use DialContext.
-func (d *Dialer) Dial(network, addr string) (net.Conn, error) {
-	return d.DialContext(context.Background(), network, addr)
-}
-
-func (d *Dialer) netDialer() *net.Dialer {
-	if d.NetDialer != nil {
-		return d.NetDialer
-	}
-	return new(net.Dialer)
-}
-
-// DialContext connects to the given network address and initiates a TLS
-// handshake, returning the resulting TLS connection.
-//
-// The provided Context must be non-nil. If the context expires before
-// the connection is complete, an error is returned. Once successfully
-// connected, any expiration of the context will not affect the
-// connection.
-//
-// The returned Conn, if any, will always be of type *Conn.
-func (d *Dialer) DialContext(ctx context.Context, network, addr string) (net.Conn, error) {
-	c, err := dial(ctx, d.netDialer(), network, addr, d.Config)
-	if err != nil {
-		// Don't return c (a typed nil) in an interface.
-		return nil, err
-	}
-	return c, nil
-}
-
-// LoadX509KeyPair reads and parses a public/private key pair from a pair
-// of files. The files must contain PEM encoded data. The certificate file
-// may contain intermediate certificates following the leaf certificate to
-// form a certificate chain. On successful return, Certificate.Leaf will
-// be nil because the parsed form of the certificate is not retained.
-func LoadX509KeyPair(certFile, keyFile string) (Certificate, error) {
-	certPEMBlock, err := os.ReadFile(certFile)
-	if err != nil {
-		return Certificate{}, err
-	}
-	keyPEMBlock, err := os.ReadFile(keyFile)
-	if err != nil {
-		return Certificate{}, err
-	}
-	return X509KeyPair(certPEMBlock, keyPEMBlock)
-}
-
-// X509KeyPair parses a public/private key pair from a pair of
-// PEM encoded data. On successful return, Certificate.Leaf will be nil because
-// the parsed form of the certificate is not retained.
-func X509KeyPair(certPEMBlock, keyPEMBlock []byte) (Certificate, error) {
-	fail := func(err error) (Certificate, error) { return Certificate{}, err }
-
-	var cert Certificate
-	var skippedBlockTypes []string
-	for {
-		var certDERBlock *pem.Block
-		certDERBlock, certPEMBlock = pem.Decode(certPEMBlock)
-		if certDERBlock == nil {
-			break
-		}
-		if certDERBlock.Type == "CERTIFICATE" {
-			cert.Certificate = append(cert.Certificate, certDERBlock.Bytes)
-		} else {
-			skippedBlockTypes = append(skippedBlockTypes, certDERBlock.Type)
-		}
-	}
-
-	if len(cert.Certificate) == 0 {
-		if len(skippedBlockTypes) == 0 {
-			return fail(errors.New("tls: failed to find any PEM data in certificate input"))
-		}
-		if len(skippedBlockTypes) == 1 && strings.HasSuffix(skippedBlockTypes[0], "PRIVATE KEY") {
-			return fail(errors.New("tls: failed to find certificate PEM data in certificate input, but did find a private key; PEM inputs may have been switched"))
-		}
-		return fail(fmt.Errorf("tls: failed to find \"CERTIFICATE\" PEM block in certificate input after skipping PEM blocks of the following types: %v", skippedBlockTypes))
-	}
-
-	skippedBlockTypes = skippedBlockTypes[:0]
-	var keyDERBlock *pem.Block
-	for {
-		keyDERBlock, keyPEMBlock = pem.Decode(keyPEMBlock)
-		if keyDERBlock == nil {
-			if len(skippedBlockTypes) == 0 {
-				return fail(errors.New("tls: failed to find any PEM data in key input"))
-			}
-			if len(skippedBlockTypes) == 1 && skippedBlockTypes[0] == "CERTIFICATE" {
-				return fail(errors.New("tls: found a certificate rather than a key in the PEM for the private key"))
-			}
-			return fail(fmt.Errorf("tls: failed to find PEM block with type ending in \"PRIVATE KEY\" in key input after skipping PEM blocks of the following types: %v", skippedBlockTypes))
-		}
-		if keyDERBlock.Type == "PRIVATE KEY" || strings.HasSuffix(keyDERBlock.Type, " PRIVATE KEY") {
-			break
-		}
-		skippedBlockTypes = append(skippedBlockTypes, keyDERBlock.Type)
-	}
-
-	// We don't need to parse the public key for TLS, but we so do anyway
-	// to check that it looks sane and matches the private key.
-	x509Cert, err := x509.ParseCertificate(cert.Certificate[0])
-	if err != nil {
-		return fail(err)
-	}
-
-	cert.PrivateKey, err = parsePrivateKey(keyDERBlock.Bytes)
-	if err != nil {
-		return fail(err)
-	}
-
-	switch pub := x509Cert.PublicKey.(type) {
-	case *rsa.PublicKey:
-		priv, ok := cert.PrivateKey.(*rsa.PrivateKey)
-		if !ok {
-			return fail(errors.New("tls: private key type does not match public key type"))
-		}
-		if pub.N.Cmp(priv.N) != 0 {
-			return fail(errors.New("tls: private key does not match public key"))
-		}
-	case *ecdsa.PublicKey:
-		priv, ok := cert.PrivateKey.(*ecdsa.PrivateKey)
-		if !ok {
-			return fail(errors.New("tls: private key type does not match public key type"))
-		}
-		if pub.X.Cmp(priv.X) != 0 || pub.Y.Cmp(priv.Y) != 0 {
-			return fail(errors.New("tls: private key does not match public key"))
-		}
-	case ed25519.PublicKey:
-		priv, ok := cert.PrivateKey.(ed25519.PrivateKey)
-		if !ok {
-			return fail(errors.New("tls: private key type does not match public key type"))
-		}
-		if !bytes.Equal(priv.Public().(ed25519.PublicKey), pub) {
-			return fail(errors.New("tls: private key does not match public key"))
-		}
-	case circlSign.PublicKey:
-		priv, ok := cert.PrivateKey.(circlSign.PrivateKey)
-		if !ok {
-			return fail(errors.New("tls: private key type does not match public key type"))
-		}
-		pkBytes, err := priv.Public().(circlSign.PublicKey).MarshalBinary()
-		pkBytes2, err2 := pub.MarshalBinary()
-
-		if err != nil || err2 != nil || !bytes.Equal(pkBytes, pkBytes2) {
-			return fail(errors.New("tls: private key does not match public key"))
-		}
-	default:
-		return fail(errors.New("tls: unknown public key algorithm"))
-	}
-
-	return cert, nil
-}
-
-// Attempt to parse the given private key DER block. OpenSSL 0.9.8 generates
-// PKCS #1 private keys by default, while OpenSSL 1.0.0 generates PKCS #8 keys.
-// OpenSSL ecparam generates SEC1 EC private keys for ECDSA. We try all three.
-func parsePrivateKey(der []byte) (crypto.PrivateKey, error) {
-	if key, err := x509.ParsePKCS1PrivateKey(der); err == nil {
-		return key, nil
-	}
-	if key, err := x509.ParsePKCS8PrivateKey(der); err == nil {
-		switch key := key.(type) {
-		case *rsa.PrivateKey, *ecdsa.PrivateKey, ed25519.PrivateKey, circlSign.PrivateKey:
-			return key, nil
-		default:
-			return nil, errors.New("tls: found unknown private key type in PKCS#8 wrapping")
-		}
-	}
-	if key, err := x509.ParseECPrivateKey(der); err == nil {
-		return key, nil
-	}
-
-	return nil, errors.New("tls: failed to parse private key")
-}

transport/cloudflaretls/tls_cf.go

@@ -1,241 +0,0 @@
-// Copyright 2021 Cloudflare, Inc. All rights reserved. Use of this source code
-// is governed by a BSD-style license that can be found in the LICENSE file.
-
-package tls
-
-import (
-	"time"
-
-	circlPki "github.com/cloudflare/circl/pki"
-	circlSign "github.com/cloudflare/circl/sign"
-	"github.com/cloudflare/circl/sign/eddilithium3"
-)
-
-const (
-	// Constants for ECH status events.
-	echStatusBypassed = 1 + iota
-	echStatusInner
-	echStatusOuter
-)
-
-// To add a signature scheme from Circl
-//
-//   1. make sure it implements TLSScheme and CertificateScheme,
-//   2. follow the instructions in crypto/x509/x509_cf.go
-//   3. add a signature<NameOfAlg> to the iota in common.go
-//   4. add row in the circlSchemes lists below
-
-var circlSchemes = [...]struct {
-	sigType uint8
-	scheme  circlSign.Scheme
-}{
-	{signatureEdDilithium3, eddilithium3.Scheme()},
-}
-
-func circlSchemeBySigType(sigType uint8) circlSign.Scheme {
-	for _, cs := range circlSchemes {
-		if cs.sigType == sigType {
-			return cs.scheme
-		}
-	}
-	return nil
-}
-
-func sigTypeByCirclScheme(scheme circlSign.Scheme) uint8 {
-	for _, cs := range circlSchemes {
-		if cs.scheme == scheme {
-			return cs.sigType
-		}
-	}
-	return 0
-}
-
-var supportedSignatureAlgorithmsWithCircl []SignatureScheme
-
-// supportedSignatureAlgorithms returns enabled signature schemes. PQ signature
-// schemes are only included when tls.Config#PQSignatureSchemesEnabled is set.
-func (c *Config) supportedSignatureAlgorithms() []SignatureScheme {
-	if c != nil && c.PQSignatureSchemesEnabled {
-		return supportedSignatureAlgorithmsWithCircl
-	}
-	return supportedSignatureAlgorithms
-}
-
-func init() {
-	supportedSignatureAlgorithmsWithCircl = append([]SignatureScheme{}, supportedSignatureAlgorithms...)
-	for _, cs := range circlSchemes {
-		supportedSignatureAlgorithmsWithCircl = append(supportedSignatureAlgorithmsWithCircl,
-			SignatureScheme(cs.scheme.(circlPki.TLSScheme).TLSIdentifier()))
-	}
-}
-
-// CFEvent is a value emitted at various points in the handshake that is
-// handled by the callback Config.CFEventHandler.
-type CFEvent interface {
-	Name() string
-}
-
-// CFEventTLS13ClientHandshakeTimingInfo carries intra-stack time durations for
-// TLS 1.3 client-state machine changes. It can be used for tracking metrics
-// during a connection. Some durations may be sensitive, such as the amount of
-// time to process a particular handshake message, so this event should only be
-// used for experimental purposes.
-type CFEventTLS13ClientHandshakeTimingInfo struct {
-	timer                   func() time.Time
-	start                   time.Time
-	WriteClientHello        time.Duration
-	ProcessServerHello      time.Duration
-	ReadEncryptedExtensions time.Duration
-	ReadCertificate         time.Duration
-	ReadCertificateVerify   time.Duration
-	ReadServerFinished      time.Duration
-	WriteCertificate        time.Duration
-	WriteCertificateVerify  time.Duration
-	WriteClientFinished     time.Duration
-}
-
-// Name is required by the CFEvent interface.
-func (e CFEventTLS13ClientHandshakeTimingInfo) Name() string {
-	return "TLS13ClientHandshakeTimingInfo"
-}
-
-func (e CFEventTLS13ClientHandshakeTimingInfo) elapsedTime() time.Duration {
-	if e.timer == nil {
-		return 0
-	}
-	return e.timer().Sub(e.start)
-}
-
-func createTLS13ClientHandshakeTimingInfo(timerFunc func() time.Time) CFEventTLS13ClientHandshakeTimingInfo {
-	timer := time.Now
-	if timerFunc != nil {
-		timer = timerFunc
-	}
-
-	return CFEventTLS13ClientHandshakeTimingInfo{
-		timer: timer,
-		start: timer(),
-	}
-}
-
-// CFEventTLS13ServerHandshakeTimingInfo carries intra-stack time durations
-// for TLS 1.3 state machine changes. It can be used for tracking metrics during a
-// connection. Some durations may be sensitive, such as the amount of time to
-// process a particular handshake message, so this event should only be used
-// for experimental purposes.
-type CFEventTLS13ServerHandshakeTimingInfo struct {
-	timer                    func() time.Time
-	start                    time.Time
-	ProcessClientHello       time.Duration
-	WriteServerHello         time.Duration
-	WriteEncryptedExtensions time.Duration
-	WriteCertificate         time.Duration
-	WriteCertificateVerify   time.Duration
-	WriteServerFinished      time.Duration
-	ReadCertificate          time.Duration
-	ReadCertificateVerify    time.Duration
-	ReadClientFinished       time.Duration
-}
-
-// Name is required by the CFEvent interface.
-func (e CFEventTLS13ServerHandshakeTimingInfo) Name() string {
-	return "TLS13ServerHandshakeTimingInfo"
-}
-
-func (e CFEventTLS13ServerHandshakeTimingInfo) elapsedTime() time.Duration {
-	if e.timer == nil {
-		return 0
-	}
-	return e.timer().Sub(e.start)
-}
-
-func createTLS13ServerHandshakeTimingInfo(timerFunc func() time.Time) CFEventTLS13ServerHandshakeTimingInfo {
-	timer := time.Now
-	if timerFunc != nil {
-		timer = timerFunc
-	}
-
-	return CFEventTLS13ServerHandshakeTimingInfo{
-		timer: timer,
-		start: timer(),
-	}
-}
-
-// CFEventECHClientStatus is emitted once it is known whether the client
-// bypassed, offered, or greased ECH.
-type CFEventECHClientStatus int
-
-// Bypassed returns true if the client bypassed ECH.
-func (e CFEventECHClientStatus) Bypassed() bool {
-	return e == echStatusBypassed
-}
-
-// Offered returns true if the client offered ECH.
-func (e CFEventECHClientStatus) Offered() bool {
-	return e == echStatusInner
-}
-
-// Greased returns true if the client greased ECH.
-func (e CFEventECHClientStatus) Greased() bool {
-	return e == echStatusOuter
-}
-
-// Name is required by the CFEvent interface.
-func (e CFEventECHClientStatus) Name() string {
-	return "ech client status"
-}
-
-// CFEventECHServerStatus is emitted once it is known whether the client
-// bypassed, offered, or greased ECH.
-type CFEventECHServerStatus int
-
-// Bypassed returns true if the client bypassed ECH.
-func (e CFEventECHServerStatus) Bypassed() bool {
-	return e == echStatusBypassed
-}
-
-// Accepted returns true if the client offered ECH.
-func (e CFEventECHServerStatus) Accepted() bool {
-	return e == echStatusInner
-}
-
-// Rejected returns true if the client greased ECH.
-func (e CFEventECHServerStatus) Rejected() bool {
-	return e == echStatusOuter
-}
-
-// Name is required by the CFEvent interface.
-func (e CFEventECHServerStatus) Name() string {
-	return "ech server status"
-}
-
-// CFEventECHPublicNameMismatch is emitted if the outer SNI does not match
-// match the public name of the ECH configuration. Note that we do not record
-// the outer SNI in order to avoid collecting this potentially sensitive data.
-type CFEventECHPublicNameMismatch struct{}
-
-// Name is required by the CFEvent interface.
-func (e CFEventECHPublicNameMismatch) Name() string {
-	return "ech public name does not match outer sni"
-}
-
-// For backwards compatibility.
-type CFEventTLS13NegotiatedKEX = CFEventTLSNegotiatedNamedKEX
-
-// CFEventTLSNegotiatedNamedKEX is emitted when a key agreement mechanism has been
-// established that uses a named group. This includes all key agreements
-// in TLSv1.3, but excludes RSA and DH in TLS 1.2 and earlier.
-type CFEventTLSNegotiatedNamedKEX struct {
-	KEX CurveID
-}
-
-func (e CFEventTLSNegotiatedNamedKEX) Name() string {
-	return "CFEventTLSNegotiatedNamedKEX"
-}
-
-// CFEventTLS13HRR is emitted when a HRR is sent or received
-type CFEventTLS13HRR struct{}
-
-func (e CFEventTLS13HRR) Name() string {
-	return "CFEventTLS13HRR"
-}