public void Initialize(byte[] sessionKey, byte[] clientSeed, byte[] serverSeed)
{
IsInitialized = false;
if (IsInitialized)
{
throw new InvalidOperationException("PacketCrypt already initialized!");
}
SARC4Encrypt = new SARC4();
SARC4Decrypt = new SARC4();
var decryptSHA1 = new HMACSHA1(serverSeed);
var encryptSHA1 = new HMACSHA1(clientSeed);
SARC4Encrypt.PrepareKey(encryptSHA1.ComputeHash(sessionKey));
SARC4Decrypt.PrepareKey(decryptSHA1.ComputeHash(sessionKey));
var PacketEncryptionDummy = new byte[0x400];
var PacketDecryptionDummy = new byte[0x400];
SARC4Encrypt.ProcessBuffer(PacketEncryptionDummy, PacketEncryptionDummy.Length);
SARC4Decrypt.ProcessBuffer(PacketDecryptionDummy, PacketDecryptionDummy.Length);
IsInitialized = true;
}
public void Encrypt(byte[] data, int count)
{
if (!IsInitialized)
{
throw new InvalidOperationException("PacketCrypt not initialized!");
}
SARC4Encrypt.ProcessBuffer(data, count);
}
public WoWCrypt(byte[] sessionKey)
{
IsInitialized = false;
if (IsInitialized)
throw new InvalidOperationException("PacketCrypt already initialized!");
SARC4Encrypt = new SARC4();
SARC4Decrypt = new SARC4();
var decryptSHA1 = new HMACSHA1(ServerDecryptionKey);
var encryptSHA1 = new HMACSHA1(ServerEncryptionKey);
SARC4Encrypt.PrepareKey(encryptSHA1.ComputeHash(sessionKey));
SARC4Decrypt.PrepareKey(decryptSHA1.ComputeHash(sessionKey));
var PacketEncryptionDummy = new byte[0x400];
var PacketDecryptionDummy = new byte[0x400];
SARC4Encrypt.ProcessBuffer(PacketEncryptionDummy, PacketEncryptionDummy.Length);
SARC4Decrypt.ProcessBuffer(PacketDecryptionDummy, PacketDecryptionDummy.Length);
IsInitialized = true;
}