Core/Crypto: Renamed SHA1Randx/WardenKeyGeneration and made it a template class

1 files changed, 82 insertions, 0 deletions

diff --git a/src/common/Cryptography/SessionKeyGeneration.h b/src/common/Cryptography/SessionKeyGeneration.h
new file mode 100644
index 00000000000..0ec4479b765
--- /dev/null
+++ b/src/common/Cryptography/SessionKeyGeneration.h
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2008-2016 TrinityCore <http://www.trinitycore.org/>
+ * Copyright (C) 2005-2011 MaNGOS <http://getmangos.com/>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef SessionKeyGeneration_h__
+#define SessionKeyGeneration_h__
+
+#include "Common.h"
+
+template<class Hash>
+class SessionKeyGenerator
+{
+public:
+    SessionKeyGenerator(uint8* buff, uint32 size)
+    {
+        uint32 halfSize = size / 2;
+
+        sh.Initialize();
+        sh.UpdateData(buff, halfSize);
+        sh.Finalize();
+
+        memcpy(o1, sh.GetDigest(), Hash::DigestLength::value);
+
+        sh.Initialize();
+        sh.UpdateData(buff + halfSize, size - halfSize);
+        sh.Finalize();
+
+        memcpy(o2, sh.GetDigest(), Hash::DigestLength::value);
+
+        memset(o0, 0x00, Hash::DigestLength::value);
+
+        FillUp();
+    }
+
+    void Generate(uint8* buf, uint32 sz)
+    {
+        for (uint32 i = 0; i < sz; ++i)
+        {
+            if (taken == Hash::DigestLength::value)
+                FillUp();
+
+            buf[i] = o0[taken];
+            taken++;
+        }
+    }
+
+private:
+    void FillUp()
+    {
+        sh.Initialize();
+        sh.UpdateData(o1, Hash::DigestLength::value);
+        sh.UpdateData(o0, Hash::DigestLength::value);
+        sh.UpdateData(o2, Hash::DigestLength::value);
+        sh.Finalize();
+
+        memcpy(o0, sh.GetDigest(), Hash::DigestLength::value);
+
+        taken = 0;
+    }
+
+    Hash sh;
+    uint32 taken;
+    uint8 o0[Hash::DigestLength::value];
+    uint8 o1[Hash::DigestLength::value];
+    uint8 o2[Hash::DigestLength::value];
+};
+
+#endif // SessionKeyGeneration_h__