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/*
* Copyright (C) 2016+ AzerothCore <www.azerothcore.org>, released under GNU GPL v2 license, you may redistribute it and/or modify it under version 2 of the License, or (at your option), any later version.
* Copyright (C) 2008-2016 TrinityCore <http://www.trinitycore.org/>
* Copyright (C) 2005-2009 MaNGOS <http://getmangos.com/>
*/
#include "ARC4.h"
#include <openssl/sha.h>
ARC4::ARC4(uint32 len) : m_ctx(EVP_CIPHER_CTX_new())
{
EVP_CIPHER_CTX_init(m_ctx);
EVP_EncryptInit_ex(m_ctx, EVP_rc4(), nullptr, nullptr, nullptr);
EVP_CIPHER_CTX_set_key_length(m_ctx, len);
}
ARC4::ARC4(uint8* seed, uint32 len) : m_ctx(EVP_CIPHER_CTX_new())
{
EVP_CIPHER_CTX_init(m_ctx);
EVP_EncryptInit_ex(m_ctx, EVP_rc4(), nullptr, nullptr, nullptr);
EVP_CIPHER_CTX_set_key_length(m_ctx, len);
EVP_EncryptInit_ex(m_ctx, nullptr, nullptr, seed, nullptr);
}
ARC4::~ARC4()
{
EVP_CIPHER_CTX_free(m_ctx);
}
void ARC4::Init(uint8* seed)
{
EVP_EncryptInit_ex(m_ctx, nullptr, nullptr, seed, nullptr);
}
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);
}
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