private ReadOnlyMemory <byte> String2Key(byte[] password, string salt, byte[] param)
{
var passwordBytes = KerberosConstants.UnicodeBytesToUtf8(password);
var iterations = GetIterations(param, 4096);
var saltBytes = KerberosConstants.UnicodeStringToUtf8(salt);
var random = PBKDF2(passwordBytes, saltBytes, iterations, KeySize);
return(DK(random, KerberosConstant, KeySize, BlockSize));
}
private static ReadOnlySpan <byte> GetSaltBytes(string salt, string pepper)
{
var saltBytes = KerberosConstants.UnicodeStringToUtf8(salt);
if (string.IsNullOrWhiteSpace(pepper))
{
return(saltBytes);
}
var pepperBytes = KerberosConstants.UnicodeStringToUtf8(pepper);
var results = new Span <byte>(new byte[saltBytes.Length + 1 + pepperBytes.Length]);
pepperBytes.CopyTo(results);
saltBytes.CopyTo(results.Slice(pepperBytes.Length + 1, saltBytes.Length));
return(results);
}