efficient md5 c#.cs

    public static string ToMd5(this string input)
    {
        var inputBytes = Encoding.ASCII.GetBytes(input);

        return inputBytes.ToMd5(0, inputBytes.Length);
    }

    public static string ToMd5(this byte[] inputBytes, int offset, int count)
    {
        Span<char> chars = stackalloc char[32];

        inputBytes.ToMd5(offset, count, chars);

        return chars.ToString();
    }

    private static void ToMd5(this byte[] input, int offset, int count, Span<char> destination)
    {
        using var md5 = MD5.Create();
        var hashBytes = md5.ComputeHash(input, offset, count);

        var charsWritten = 0;
        const string format = "X2";

        foreach (var hashByte in hashBytes)
        {
            if (hashByte.TryFormat(destination, out charsWritten, format))
            {
                destination = destination.Slice(charsWritten);
            }
            else
            {
                throw new InvalidOperationException(
                    $"byte '{hashByte}' could not be parsed using format '{format}' and avaible space of {destination.Length}");
            }
        }
    }