1 files changed, 66 insertions, 0 deletions
diff --git a/src/server/shared/Cryptography/HmacHash.cpp b/src/server/shared/Cryptography/HmacHash.cpp
new file mode 100644
index 00000000000..2913b9fa79a
--- /dev/null
+++ b/src/server/shared/Cryptography/HmacHash.cpp
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2008-2014 TrinityCore <http://www.trinitycore.org/>
+ * Copyright (C) 2005-2009 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/>.
+ */
+
+#include "HmacHash.h"
+#include "BigNumber.h"
+#include "Common.h"
+
+template<HashCreateFn HashCreator, uint32 DigestLength>
+HmacHash<HashCreator, DigestLength>::HmacHash(uint32 len, uint8 *seed)
+{
+    HMAC_CTX_init(&_ctx);
+    HMAC_Init_ex(&_ctx, seed, len, HashCreator(), NULL);
+    memset(_digest, 0, DigestLength);
+}
+
+template<HashCreateFn HashCreator, uint32 DigestLength>
+HmacHash<HashCreator, DigestLength>::~HmacHash()
+{
+    HMAC_CTX_cleanup(&_ctx);
+}
+
+template<HashCreateFn HashCreator, uint32 DigestLength>
+void HmacHash<HashCreator, DigestLength>::UpdateData(const std::string &str)
+{
+    HMAC_Update(&_ctx, (uint8 const*)str.c_str(), str.length());
+}
+
+template<HashCreateFn HashCreator, uint32 DigestLength>
+void HmacHash<HashCreator, DigestLength>::UpdateData(const uint8* data, size_t len)
+{
+    HMAC_Update(&_ctx, data, len);
+}
+
+template<HashCreateFn HashCreator, uint32 DigestLength>
+void HmacHash<HashCreator, DigestLength>::Finalize()
+{
+    uint32 length = 0;
+    HMAC_Final(&_ctx, _digest, &length);
+    ASSERT(length == DigestLength);
+}
+
+template<HashCreateFn HashCreator, uint32 DigestLength>
+uint8* HmacHash<HashCreator, DigestLength>::ComputeHash(BigNumber* bn)
+{
+    HMAC_Update(&_ctx, bn->AsByteArray().get(), bn->GetNumBytes());
+    Finalize();
+    return _digest;
+}
+
+template class HmacHash<EVP_sha1, SHA_DIGEST_LENGTH>;
+template class HmacHash<EVP_sha256, SHA256_DIGEST_LENGTH>;