1 files changed, 62 insertions, 0 deletions
diff --git a/src/server/shared/Cryptography/HMACSHA1.cpp b/src/server/shared/Cryptography/HMACSHA1.cpp
new file mode 100644
index 00000000000..a30f1b2d1e2
--- /dev/null
+++ b/src/server/shared/Cryptography/HMACSHA1.cpp
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
+ *
+ * Copyright (C) 2008-2010 Trinity <http://www.trinitycore.org/>
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include "Auth/Hmac.h"
+#include "BigNumber.h"
+
+HmacHash::HmacHash(uint32 len, uint8 *seed)
+{
+    HMAC_CTX_init(&m_ctx);
+    HMAC_Init_ex(&m_ctx, seed, len, EVP_sha1(), NULL);
+}
+
+HmacHash::~HmacHash()
+{
+    HMAC_CTX_cleanup(&m_ctx);
+}
+
+void HmacHash::UpdateBigNumber(BigNumber *bn)
+{
+    UpdateData(bn->AsByteArray(), bn->GetNumBytes());
+}
+
+void HmacHash::UpdateData(const uint8 *data, int length)
+{
+    HMAC_Update(&m_ctx, data, length);
+}
+
+void HmacHash::UpdateData(const std::string &str)
+{
+    UpdateData((uint8 const*)str.c_str(), str.length());
+}
+
+void HmacHash::Finalize()
+{
+    uint32 length = 0;
+    HMAC_Final(&m_ctx, (uint8*)m_digest, &length);
+    ASSERT(length == SHA_DIGEST_LENGTH)
+}
+
+uint8 *HmacHash::ComputeHash(BigNumber *bn)
+{
+    HMAC_Update(&m_ctx, bn->AsByteArray(), bn->GetNumBytes());
+    Finalize();
+    return (uint8*)m_digest;
+}