public static bool CheckSaltedHash(string stringToCheck, Salted_Hash saltedHash)
{
if (stringToCheck == null)
{
throw new ArgumentNullException("password");
}
else if (saltedHash.Hash == null)
{
throw new ArgumentNullException("salt");
}
else if (saltedHash.Salt == null)
{
throw new ArgumentNullException("hashedPassword");
}
else if (saltedHash.Iterations <= 0)
{
throw new ArgumentOutOfRangeException("iterations", "number must be positive");
}
byte[] hashGenerated = null;
using (Rfc2898DeriveBytes hashDriver = new Rfc2898DeriveBytes(
stringToCheck, // string to hash
saltedHash.Salt, // salt
saltedHash.Iterations)) // hash iterations
{
hashGenerated = hashDriver.GetBytes(hash_lenght);
}
return(ByteArraysEqual(hashGenerated, saltedHash.Hash));
}
public static Salted_Hash CreateSaltedHash(string stringToHash, int iterations, int saltLenght = 64)
{
if (stringToHash == null)
{
throw new ArgumentNullException("password");
}
else if (iterations <= 0)
{
throw new ArgumentOutOfRangeException("iterations", "number must be positive");
}
else if (saltLenght <= 0)
{
throw new ArgumentOutOfRangeException("saltLenght", "number must be positive");
}
Salted_Hash salted_Hash = new Salted_Hash()
{
Salt = Security.CreateToken(saltLenght),
Iterations = iterations
};
using (Rfc2898DeriveBytes hashDriver = new Rfc2898DeriveBytes(
stringToHash, // string to hash
salted_Hash.Salt, // salt
iterations)) // hash iterations
{
salted_Hash.Hash = hashDriver.GetBytes(hash_lenght);
}
return(salted_Hash);
}
