public Tuple GetAuthTuple()
{
var tuple = new Tuple();
if (string.IsNullOrWhiteSpace(Password))
{
return(tuple);
}
var salt = Convert.FromBase64String(_salt);
var sha = new SHA1Managed();
var step1 = sha.ComputeHash(Encoding.UTF8.GetBytes(Password));
var step2 = sha.ComputeHash(step1);
var scrambleSize = 20;
var saltedHash = new byte[step2.Length + salt.Length];
salt.CopyTo(saltedHash, 0);
step2.CopyTo(saltedHash, salt.Length);
sha.Clear();
sha = new SHA1Managed();
sha.TransformBlock(salt, 0, scrambleSize, saltedHash, 0);
sha.TransformFinalBlock(step2, 0, step2.Length);
var step3 = sha.Hash;
sha.Clear();
var xor = XOR(step1, step3);
tuple.AddField("chap-sha1");
tuple.AddField(xor);
return(tuple);
}
public TupleBuilder AddField(object data)
{
_tuple.AddField(data);
return(this);
}