Local snapshot for Docker build (includes mod-ale)

Co-authored-by: Cursor <cursoragent@cursor.com>

src/common/Cryptography/ARC4.cpp

@@ -0,0 +1,51 @@
+/*
+ * This file is part of the AzerothCore Project. See AUTHORS file for Copyright information
+ *
+ * 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 "Errors.h"
+
+Acore::Crypto::ARC4::ARC4() : _ctx(EVP_CIPHER_CTX_new())
+{
+    _cipher = EVP_CIPHER_fetch(nullptr, "RC4", nullptr);
+
+    EVP_CIPHER_CTX_init(_ctx);
+    int result = EVP_EncryptInit_ex(_ctx, _cipher, nullptr, nullptr, nullptr);
+    ASSERT(result == 1);
+}
+
+Acore::Crypto::ARC4::~ARC4()
+{
+    EVP_CIPHER_CTX_free(_ctx);
+    EVP_CIPHER_free(_cipher);
+}
+
+void Acore::Crypto::ARC4::Init(uint8 const* seed, std::size_t len)
+{
+    int result1 = EVP_CIPHER_CTX_set_key_length(_ctx, len);
+    ASSERT(result1 == 1);
+    int result2 = EVP_EncryptInit_ex(_ctx, nullptr, nullptr, seed, nullptr);
+    ASSERT(result2 == 1);
+}
+
+void Acore::Crypto::ARC4::UpdateData(uint8* data, std::size_t len)
+{
+    int outlen = 0;
+    int result1 = EVP_EncryptUpdate(_ctx, data, &outlen, data, len);
+    ASSERT(result1 == 1);
+    int result2 = EVP_EncryptFinal_ex(_ctx, data, &outlen);
+    ASSERT(result2 == 1);
+}