public bool ValidatePassword(string encryptedPassword, string plainPassword)
{
Span <byte> encryptedBytes = stackalloc byte[m_OutputSize];
HexStringConverter.GetBytes(encryptedPassword, encryptedBytes);
ushort iterations = BinaryPrimitives.ReadUInt16LittleEndian(encryptedBytes.Slice(0, 2));
Span <byte> salt = encryptedBytes.Slice(2, m_SaltSize);
ReadOnlySpan <byte> hash =
new Rfc2898DeriveBytes(plainPassword, salt.ToArray(), iterations, m_Algorithm).GetBytes(m_HashSize);
return(hash.SequenceEqual(encryptedBytes.Slice(m_SaltSize + 2)));
}
public bool ValidatePassword(string encryptedPassword, string plainPassword)
{
Span <byte> encryptedBytes = stackalloc byte[m_OutputSize];
encryptedPassword.GetBytes(encryptedBytes);
var iterations = BinaryPrimitives.ReadUInt16LittleEndian(encryptedBytes.SliceToLength(2));
var salt = encryptedBytes.Slice(2, m_SaltSize);
ReadOnlySpan <byte> hash =
new Rfc2898DeriveBytes(plainPassword, salt.ToArray(), iterations, HashAlgorithmName.SHA256).GetBytes(m_HashSize);
return(hash.SequenceEqual(encryptedBytes.Slice(m_SaltSize + 2)));
}
public bool CheckPassword(string passwordAttempt, string storedHash)
{
//Split the stored hash and parse the contained information
var parts = storedHash.Split(".");
if (parts.Length != 3)
{
return(false);
}
var salt = Convert.FromBase64String(parts[0]);
var iterations = int.Parse(parts[1]);
var storedKey = Convert.FromBase64String(parts[2]);
var attemptKey = new Rfc2898DeriveBytes(passwordAttempt, salt, iterations, HashAlgorithmName.SHA512)
.GetBytes(storedKey.Length);
return(attemptKey.SequenceEqual(storedKey));
}
public bool VerifyHash(string text, byte[] hash, byte[] salt)
{
var hashedText = new Rfc2898DeriveBytes(text, salt, IterationsCount).GetBytes(HashLength);
return(hashedText.SequenceEqual(hash));
}