public static string ArgonHashString(string password, long opsLimit, int memLimit) { if (password == null) { throw new ArgumentNullException("password", "Password cannot be null"); } if (opsLimit < 3L) { throw new ArgumentOutOfRangeException("opsLimit", "opsLimit the number of passes, has to be at least 3"); } if (memLimit <= 0) { throw new ArgumentOutOfRangeException("memLimit", "memLimit cannot be zero or negative"); } byte[] array = new byte[128]; byte[] bytes = Encoding.UTF8.GetBytes(password); if (SodiumLibrary.crypto_pwhash_str(array, bytes, (long)bytes.Length, opsLimit, memLimit) != 0) { throw new OutOfMemoryException("Internal error, hash failed (usually because the operating system refused to allocate the amount of requested memory)."); } return(Encoding.UTF8.GetString(array)); }