From f0163ce5d2ac5ee5ef1e372cdad451ace2550f3b Mon Sep 17 00:00:00 2001
From: saint <saint@saint.li>
Date: Thu, 29 Aug 2024 18:45:58 +1000
Subject: [PATCH] v0.18 Hopeful MD5 resolution

---
 plugin.rb | 47 +++++++++++++++++++++++++++++++++++------------
 1 file changed, 35 insertions(+), 12 deletions(-)

diff --git a/plugin.rb b/plugin.rb
index 5cdc62a..4e3460d 100644
--- a/plugin.rb
+++ b/plugin.rb
@@ -4,7 +4,7 @@
 
 # name: discourse-md5_authentication
 # about: A plugin to authenticate users with MD5 passwords from legacy systems
-# version: 0.17
+# version: 0.18
 # authors: saint@federated.computer
 # url: https://gitea.federated.computer/saint/discourse-md5_authentication.git
 
@@ -138,7 +138,7 @@ after_initialize do
       length.times do
         result << ITOA64[value & 0x3f]
         value >>= 6
-        Rails.logger.warn "to64 result: #{result}"
+        Rails.logger.warn "MD5 -- to64 result: #{result}"
       end
       result
     end
@@ -152,7 +152,7 @@ after_initialize do
       salt = salt[0, 8]
 
       magic = "$GT$"
-      Rails.logger.warn "MD5 magic: #{magic}"
+      Rails.logger.warn "MD5 -- MD5 magic: #{magic}"
 
       ctx = Digest::MD5.new
       ctx.update(password)
@@ -184,24 +184,47 @@ after_initialize do
       end
 
       final_digest = ctx.digest
-      Rails.logger.warn "MD6 final_digest: #{final_digest}"
+      Rails.logger.debug "MD5 -- MD5 final_digest: #{final_digest}"
+
+      1000.times do |i|
+        ctx1 = Digest::MD5.new
+        if i & 1 != 0
+          Rails.logger.warn "MD5 -- AAA"
+          ctx1.update(password)
+        else
+          Rails.logger.warn "MD5 -- BBB"
+          ctx1.update(final_digest)
+        end
+        ctx1.update(salt) if i % 3 != 0
+        ctx1.update(password) if i % 7 != 0
+        if i & 1 != 0
+          Rails.logger.warn "MD5 -- CCC"
+          ctx1.update(final_digest)
+        else
+          Rails.logger.warn "MD5 -- DDD"
+          ctx1.update(password)
+        end
+        final_digest = ctx1.digest
+      end
+
+      Rails.logger.warn "MD5 -- MD5++ final_digest: #{final_digest}"
 
       result = String.new
-      Rails.logger.warn "A result: #{result}"
+      Rails.logger.warn "MD5 -- A result: #{result}"
       result << to64((final_digest[0].ord << 16) | (final_digest[6].ord << 8) | final_digest[12].ord, 4)
-      Rails.logger.warn "B result: #{result}"
+      Rails.logger.warn "MD5 -- B result: #{result}"
       result << to64((final_digest[1].ord << 16) | (final_digest[7].ord << 8) | final_digest[13].ord, 4)
-      Rails.logger.warn "C result: #{result}"
+      Rails.logger.warn "MD5 -- C result: #{result}"
       result << to64((final_digest[2].ord << 16) | (final_digest[8].ord << 8) | final_digest[14].ord, 4)
-      Rails.logger.warn "D result: #{result}"
+      Rails.logger.warn "MD5 -- D result: #{result}"
       result << to64((final_digest[3].ord << 16) | (final_digest[9].ord << 8) | final_digest[15].ord, 4)
-      Rails.logger.warn "E result: #{result}"
+      Rails.logger.warn "MD5 -- E result: #{result}"
       result << to64((final_digest[4].ord << 16) | (final_digest[10].ord << 8) | final_digest[5].ord, 4)
-      Rails.logger.warn "F result: #{result}"
+      Rails.logger.warn "MD5 -- F result: #{result}"
       result << to64(final_digest[11].ord, 2)
-      Rails.logger.warn "G result: #{result}"
+      Rails.logger.warn "MD5 -- G result: #{result}"
 
-      Rails.logger.warn "magic salt result   #{magic}#{salt}$#{result}"
+      Rails.logger.warn "MD5 -- Magic Salt Result   #{magic}#{salt}$#{result}"
       "#{magic}#{salt}$#{result}"
     end