public SRPVerifier(HashAlgorithm hashAlgorithm, SRPParameter parameter,
VerificationKey verification, byte[] A)
: base(hashAlgorithm, parameter)
{
_hashAlgorithm = hashAlgorithm;
_parameter = parameter;
_s = verification.Salt.StringToByteArray().ToBigInteger();
_v = verification.Verifier.StringToByteArray().ToBigInteger();
_username = verification.Username;
_A = A.ToBigInteger();
if ((_A % _parameter.PrimeNumber) == BigInteger.Zero)
{
throw new Exception("Safety check failed");
}
_b = BigInteger.Parse("6120781328594294848119626246127827602386035851539447828004723105537643674485");
_k = Compute_k().ToBigInteger();
_B = (_k * _v + BigInteger.ModPow(
_parameter.Generator, _b, _parameter.PrimeNumber)
) % _parameter.PrimeNumber;
// _B = Compute_B(_v, _k, _b);
_u = Compute_u(_A.ToBytes(), _B.ToBytes()).ToBigInteger();
_S = Compute_S(_A, _v, _u, _b);
_K = Compute_K(_S.ToBytes());
_M = Compute_M(_username, _s.ToBytes(), _A.ToBytes(), _B.ToBytes(), _K);
_HMAK = Compute_HAMK(_A.ToBytes(), _M, _K);
_verificationKey = verification;
#if DEBUG
Console.WriteLine("=================== Verifier ====================");
Console.WriteLine("_s = {0}", _s);
Console.WriteLine("_v = {0}", _v);
Console.WriteLine("_username = {0}", _username);
Console.WriteLine("_A = {0}", _A);
Console.WriteLine("_b = {0}", _b);
Console.WriteLine("_k = {0}", _k);
Console.WriteLine("_B = {0}", _B);
Console.WriteLine("_u = {0}", _u);
Console.WriteLine("_S = {0}", _S);
Console.WriteLine("_K = {0}", _K.ToBigInteger());
Console.WriteLine("_M = {0}", _M.ToBigInteger());
Console.WriteLine("=============================================");
#endif
}
public SRPVerifier(HashAlgorithm hashAlgorithm, SRPParameter parameter,
VerificationKey verification, byte[] A, byte[] b = null)
: base(hashAlgorithm, parameter)
{
_hashAlgorithm = hashAlgorithm;
_parameter = parameter;
_s = verification.Salt.StringToBytes().ToBigInteger();
_v = verification.Verifier.StringToBytes().ToBigInteger();
_username = verification.Username;
_A = A.ToBigInteger();
if ((_A % _parameter.PrimeNumber) == BigInteger.Zero)
{
throw new Exception("Safety check failed");
}
_b = b != null?b.ToBigInteger() : GetRandomNumber().ToBytes().ToBigInteger();
_k = Compute_k().ToBigInteger();
_B = (_k * _v + BigInteger.ModPow(
_parameter.Generator, _b, _parameter.PrimeNumber)
) % _parameter.PrimeNumber;
_u = Compute_u(_A.ToBytes(), _B.ToBytes()).ToBigInteger();
_S = Compute_S(_A, _v, _u, _b);
_K = Compute_K(_S.ToBytes());
_M = Compute_M(_username, _s.ToBytes(), _A.ToBytes(), _B.ToBytes(), _K);
_HMAK = Compute_HAMK(_A.ToBytes(), _M, _K);
_verificationKey = verification;
#if DEBUG
Console.WriteLine("=================== Verifier ====================");
Console.WriteLine("_s = {0}", _s);
Console.WriteLine("_v = {0}", _v);
Console.WriteLine("_username = {0}", _username);
Console.WriteLine("_A = {0}", _A);
Console.WriteLine("_b = {0}", _b);
Console.WriteLine("_k = {0}", _k);
Console.WriteLine("_B = {0}", _B);
Console.WriteLine("_u = {0}", _u);
Console.WriteLine("_S = {0}", _S);
Console.WriteLine("_K = {0}", _K.ToBigInteger());
Console.WriteLine("_M = {0}", _M.ToBigInteger());
Console.WriteLine("=============================================");
#endif
}
public SRPUser(string username, string password, HashAlgorithm hashAlgorithm,
SRPParameter parameter, byte [] a = null) : base(hashAlgorithm, parameter)
{
_hashAlgorithm = hashAlgorithm;
_parameter = parameter;
_k = Compute_k().ToBigInteger();
_username = username;
_password = password;
_a = a != null?a.ToBigInteger() : GetRandomNumber().ToBytes().ToBigInteger();
_A = Compute_A(_a);
#if DEBUG
Console.WriteLine("=================== User ====================");
Console.WriteLine("_k = {0}", _k);
Console.WriteLine("_a = {0}", _a);
Console.WriteLine("_A = {0}", _A.ToBigInteger());
Console.WriteLine("=============================================");
#endif
}
public SRPUser(string username, string password, HashAlgorithm hashAlgorithm,
SRPParameter parameter) : base(hashAlgorithm, parameter)
{
_hashAlgorithm = hashAlgorithm;
_parameter = parameter;
_k = Compute_k().ToBigInteger();
_username = username;
_password = password;
//if (a == null)
//{
// a = GetRandomNumber().ToBytes();
//}
//_a = GetRandomNumber();
_a = BigInteger.Parse("74236667825352264527273219564547312472100561501249972990525296015972193477642");
_A = Compute_A(_a);
#if DEBUG
Console.WriteLine("=================== User ====================");
Console.WriteLine("_k = {0}", _k);
Console.WriteLine("_a = {0}", _a);
Console.WriteLine("_A = {0}", _A.ToBigInteger());
Console.WriteLine("=============================================");
#endif
}
public SecureRemoteProtocol(HashAlgorithm hashAlgorithm, SRPParameter parameter)
{
_hashAlgorithm = hashAlgorithm;
_parameter = parameter;
}
