public byte[] GenerateIdentificationHash(IdentificationHash IDHash)
{
BCrypt bCrypt = new BCrypt();
bCrypt.CreateHashNoSecretNoHMAC();
bCrypt.HashData(IDHash.SecondClientHelloHeader);
bCrypt.HashData(IDHash.SecondClientHelloData);
bCrypt.HashData(IDHash.ServerHelloResponseHeader);
bCrypt.HashData(IDHash.ServerHelloResponseData);
bCrypt.HashData(IDHash.ServerHelloResponseSecondPartHeader);
bCrypt.HashData(IDHash.ServerHelloResponseSecondPartData);
bCrypt.HashData(IDHash.ServerHelloResponseSecondPartTail);
//bCrypt.HashData(new byte[] { });
bCrypt.HashData(IDHash.ClientKeyExchangeHeader);
bCrypt.HashData(IDHash.ClientKeyExchangeData);
bCrypt.HashData(IDHash.EncryptedHashMessageHeader);
bCrypt.HashData(IDHash.EncryptedHashMessageData);
byte[] outputBuff = new byte[32];
bCrypt.FinishHash(outputBuff);
BCrypt secondBCrypt = new BCrypt();
byte[] secondOutputBuff = new byte[32];
secondBCrypt.CreateHash(this.hashSecret);
secondBCrypt.HashData(Encoding.Default.GetBytes("server finished"));
secondBCrypt.HashData(outputBuff);
secondBCrypt.FinishHash(secondOutputBuff);
secondBCrypt.HashData(secondOutputBuff);
bCrypt = secondBCrypt.Duplicate();
bCrypt.HashData(Encoding.Default.GetBytes("server finished"));
bCrypt.HashData(outputBuff);
bCrypt.FinishHash(secondOutputBuff);
byte[] retVar = new byte[0xC];
Array.Copy(secondOutputBuff, 0, retVar, 0, retVar.Length);
return(retVar);
}
public Crypt(byte[] ClientRandom, byte[] ServerRandom)
{
BCrypt bCrypt = new BCrypt();
bCrypt.CreateHash(HashSecretServerPassword);
byte[] masterSecretBuff = Encoding.Default.GetBytes("master secret");
bCrypt.HashData(masterSecretBuff);
byte[] BothRandomBuff = new byte[64];
Array.Copy(ClientRandom, BothRandomBuff, 32);
Array.Copy(ServerRandom, 0, BothRandomBuff, 32, 32);
bCrypt.HashData(BothRandomBuff);
byte[] outputBuff = new byte[32];
bCrypt.FinishHash(outputBuff);
bCrypt.HashData(outputBuff);
BCrypt secondBCryptHashHandle = bCrypt.Duplicate();
bCrypt.FinishHash(outputBuff);
secondBCryptHashHandle.HashData(masterSecretBuff);
secondBCryptHashHandle.HashData(BothRandomBuff);
byte[] secondOutputBuff = new byte[32];
secondBCryptHashHandle.FinishHash(secondOutputBuff);
Array.Copy(secondOutputBuff, hashSecret, secondOutputBuff.Length); //hashsecret part 1
bCrypt.HashData(outputBuff);
secondBCryptHashHandle = bCrypt.Duplicate();
bCrypt.FinishHash(outputBuff);
secondBCryptHashHandle.HashData(masterSecretBuff);
secondBCryptHashHandle.HashData(BothRandomBuff);
secondBCryptHashHandle.FinishHash(secondOutputBuff);
Array.Copy(secondOutputBuff, 0, hashSecret, 32, 16); //hashsecret part 2
bCrypt = new BCrypt();
bCrypt.CreateHash(hashSecret);
byte[] keyExpansionBuff = Encoding.Default.GetBytes("key expansion");
bCrypt.HashData(keyExpansionBuff);
byte[] BothRandomReversedBuff = new byte[64];
Array.Copy(ServerRandom, BothRandomReversedBuff, 32);
Array.Copy(ClientRandom, 0, BothRandomReversedBuff, 32, 32);
bCrypt.HashData(BothRandomReversedBuff);
bCrypt.FinishHash(outputBuff);
bCrypt.HashData(outputBuff);
secondBCryptHashHandle = bCrypt.Duplicate();
bCrypt.FinishHash(outputBuff);
secondBCryptHashHandle.HashData(keyExpansionBuff);
secondBCryptHashHandle.HashData(BothRandomReversedBuff);
secondBCryptHashHandle.FinishHash(secondOutputBuff);
Array.Copy(secondOutputBuff, 0, DecryptionKey, 0, 16);
Array.Copy(secondOutputBuff, 16, EncryptionKey, 0, 16);
bCrypt.HashData(outputBuff);
secondBCryptHashHandle = bCrypt.Duplicate();
bCrypt.FinishHash(outputBuff);
secondBCryptHashHandle.HashData(keyExpansionBuff);
secondBCryptHashHandle.HashData(BothRandomReversedBuff);
secondBCryptHashHandle.FinishHash(secondOutputBuff);
Array.Copy(secondOutputBuff, 0, DecryptNonceHash, 0, 4);
Array.Copy(secondOutputBuff, 4, EncryptNonceHash, 0, 4);
Console.WriteLine("DecryptNonceHash:" + Helpers.ByteArrayToString(DecryptNonceHash));
Console.WriteLine("EncryptNonceHash:" + Helpers.ByteArrayToString(EncryptNonceHash));
}
