From 10e82093b6e09dad202b06bcc6f49e09af869fb2 Mon Sep 17 00:00:00 2001
From: BuckarooBanzay <BuckarooBanzay@users.noreply.github.com>
Date: Sat, 28 Jan 2023 19:47:01 +0100
Subject: [PATCH] add `otp.generate_secret()`
---
functions.lua | 9 +++++++++
functions.spec.lua | 6 ++++++
2 files changed, 15 insertions(+)
diff --git a/functions.lua b/functions.lua
index db3f077..f90df3a 100644
--- a/functions.lua
+++ b/functions.lua
@@ -163,4 +163,13 @@ function otp.create_qr_png(data)
assert(#png_data == width*height)
return minetest.encode_png(width, height, png_data, 2)
+end
+
+function otp.generate_secret()
+ local buf = minetest.sha1("" .. math.random(10000), true)
+ local s = ""
+ for i=1,20 do
+ s = s .. string.char(string.byte(buf, i))
+ end
+ return s
end
\ No newline at end of file
diff --git a/functions.spec.lua b/functions.spec.lua
index e5d629e..64893ce 100644
--- a/functions.spec.lua
+++ b/functions.spec.lua
@@ -57,4 +57,10 @@ mtt.register("otp.create_qr_png", function(callback)
f:write(png)
f:close()
callback()
+end)
+
+mtt.register("otp.generate_secret", function(callback)
+ local s = otp.generate_secret()
+ assert(#s == 20)
+ callback()
end)
\ No newline at end of file