1 files changed, 57 insertions, 0 deletions
diff --git a/src/server/shared/Cryptography/HMACSHA1.cpp b/src/server/shared/Cryptography/HMACSHA1.cpp
new file mode 100644
index 0000000000..614919f331
--- /dev/null
+++ b/src/server/shared/Cryptography/HMACSHA1.cpp
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 
+ * Copyright (C) 
+ *
+ * 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 "HMACSHA1.h"
+#include "BigNumber.h"
+#include "Common.h"
+
+HmacHash::HmacHash(uint32 len, uint8 *seed)
+{
+    HMAC_CTX_init(&m_ctx);
+    HMAC_Init_ex(&m_ctx, seed, len, EVP_sha1(), NULL);
+    memset(m_digest, 0, sizeof(m_digest));
+}
+
+HmacHash::~HmacHash()
+{
+    HMAC_CTX_cleanup(&m_ctx);
+}
+
+void HmacHash::UpdateData(const std::string &str)
+{
+    HMAC_Update(&m_ctx, (uint8 const*)str.c_str(), str.length());
+}
+
+void HmacHash::UpdateData(const uint8* data, size_t len)
+{
+    HMAC_Update(&m_ctx, data, len);
+}
+
+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().get(), bn->GetNumBytes());
+    Finalize();
+    return (uint8*)m_digest;
+}