1 files changed, 52 insertions, 0 deletions
diff --git a/src/common/Cryptography/ARC4.cpp b/src/common/Cryptography/ARC4.cpp
new file mode 100644
index 00000000000..4915383f8dc
--- /dev/null
+++ b/src/common/Cryptography/ARC4.cpp
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2008-2015 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 "ARC4.h"
+#include <openssl/sha.h>
+
+ARC4::ARC4(uint32 len) : m_ctx()
+{
+    EVP_CIPHER_CTX_init(&m_ctx);
+    EVP_EncryptInit_ex(&m_ctx, EVP_rc4(), NULL, NULL, NULL);
+    EVP_CIPHER_CTX_set_key_length(&m_ctx, len);
+}
+
+ARC4::ARC4(uint8 *seed, uint32 len) : m_ctx()
+{
+    EVP_CIPHER_CTX_init(&m_ctx);
+    EVP_EncryptInit_ex(&m_ctx, EVP_rc4(), NULL, NULL, NULL);
+    EVP_CIPHER_CTX_set_key_length(&m_ctx, len);
+    EVP_EncryptInit_ex(&m_ctx, NULL, NULL, seed, NULL);
+}
+
+ARC4::~ARC4()
+{
+    EVP_CIPHER_CTX_cleanup(&m_ctx);
+}
+
+void ARC4::Init(uint8 *seed)
+{
+    EVP_EncryptInit_ex(&m_ctx, NULL, NULL, seed, NULL);
+}
+
+void ARC4::UpdateData(int len, uint8 *data)
+{
+    int outlen = 0;
+    EVP_EncryptUpdate(&m_ctx, data, &outlen, data, len);
+    EVP_EncryptFinal_ex(&m_ctx, data, &outlen);
+}