From 206da60f0ff22556aae063aa76e2da021bbf9ff4 Mon Sep 17 00:00:00 2001
From: XeonSquared <redtailedairways@gmail.com>
Date: Mon, 19 Jun 2017 13:19:56 +0000
Subject: [PATCH] added a library for challenge authentication using CRC32 as
 the hash. will be improved to use better stuff later

---
 modules/library/chauth.lua | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 modules/library/chauth.lua

diff --git a/modules/library/chauth.lua b/modules/library/chauth.lua
new file mode 100644
index 0000000..70070d0
--- /dev/null
+++ b/modules/library/chauth.lua
@@ -0,0 +1,23 @@
+function chauths(cA,nP,pW)
+ C.yield()
+ C.yield()
+ local rs=""
+ for i = 1, 16 do rs=rs..string.char(math.random(33,126)) end
+ ns(cA,nP,"char,"..rs)
+ while true do
+  if ev[1] == "net_msg" and ev[2] == cA and ev[3] == nP then
+   return (ev[4] == "chaa,"..string.format("%x",crc32.hash(pW..rs)))
+  end
+  C.yield()
+ end
+end
+
+function chauthc(sA,nP,pW)
+ while true do
+  if ev[1] == "net_msg" and ev[2] == sA and ev[3] == nP and ev[4]:sub(1,5) == "char," then
+   ns(sA,nP,"chaa,"..string.format("%x",crc32.hash(pW..ev[4]:sub(6))))
+   break
+  end
+  C.yield()
+ end
+end