Xray-core/main/commands/all/tls/ech.go

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package tls
import (
"encoding/json"
"encoding/pem"
"os"
"strings"
"github.com/OmarTariq612/goech"
"github.com/cloudflare/circl/hpke"
"github.com/xtls/xray-core/common"
"github.com/xtls/xray-core/main/commands/base"
)
var cmdECH = &base.Command{
UsageLine: `{{.Exec}} tls ech [--serverName (string)] [--json]`,
Short: `Generate TLS-ECH certificates`,
Long: `
Generate TLS-ECH certificates.
Set serverName to your custom string: {{.Exec}} tls ech --serverName (string)
Generate into json format: {{.Exec}} tls ech --json
`, // Enable PQ signature schemes: {{.Exec}} tls ech --pq-signature-schemes-enabled
}
func init() {
cmdECH.Run = executeECH
}
var input_pqSignatureSchemesEnabled = cmdECH.Flag.Bool("pqSignatureSchemesEnabled", false, "")
var input_serverName = cmdECH.Flag.String("serverName", "cloudflare-ech.com", "")
var input_json = cmdECH.Flag.Bool("json", false, "True == turn on json output")
func executeECH(cmd *base.Command, args []string) {
var kem hpke.KEM
if *input_pqSignatureSchemesEnabled {
kem = hpke.KEM_X25519_KYBER768_DRAFT00
} else {
kem = hpke.KEM_X25519_HKDF_SHA256
}
echKeySet, err := goech.GenerateECHKeySet(0, *input_serverName, kem)
common.Must(err)
configBuffer, _ := echKeySet.ECHConfig.MarshalBinary()
keyBuffer, _ := echKeySet.MarshalBinary()
configPEM := string(pem.EncodeToMemory(&pem.Block{Type: "ECH CONFIGS", Bytes: configBuffer}))
keyPEM := string(pem.EncodeToMemory(&pem.Block{Type: "ECH KEYS", Bytes: keyBuffer}))
if *input_json {
jECHConfigs := map[string]interface{}{
"configs": strings.Split(strings.TrimSpace(string(configPEM)), "\n"),
}
jECHKey := map[string]interface{}{
"key": strings.Split(strings.TrimSpace(string(keyPEM)), "\n"),
}
for _, i := range []map[string]interface{}{jECHConfigs, jECHKey} {
content, err := json.MarshalIndent(i, "", " ")
common.Must(err)
os.Stdout.Write(content)
os.Stdout.WriteString("\n")
}
} else {
os.Stdout.WriteString(configPEM)
os.Stdout.WriteString(keyPEM)
}
}