using System;

using System.Formats.Asn1;

public class Program

{

    public static bool ShouldRemoveLeadingZeroes(byte[] bytes)

    {

        if (0x0 == bytes[0] && (bytes[1] & (1 << 7)) != 0)

        {

            return true;

        }

        return false;

    }

    public static void Main()

    {

        string fail = "MEUCICAiMapES55djGcYoBWjLTIC74+7uWR+ceRHAZyQmJaYAiEA8vfd+Uhg9h3bKIMWA7l9t3Kq8nVk4oa45/Gbs+pQTcM=";

        byte[] failBytes = Convert.FromBase64String(fail);

        AsnReader asnReaderFail = new(new ReadOnlyMemory<byte>(failBytes), AsnEncodingRules.DER);

        var failSeq = asnReaderFail.ReadSequence();

        var failIntR = failSeq.ReadIntegerBytes().ToArray();

        var failIntS = failSeq.ReadIntegerBytes().ToArray();

        Console.WriteLine("Fail R: " + Convert.ToHexString(failIntR) + ", Should remove leading 00: " + ShouldRemoveLeadingZeroes(failIntR));

        Console.WriteLine("Fail S: " + Convert.ToHexString(failIntS) + ", Should remove leading 00: " + ShouldRemoveLeadingZeroes(failIntS));

        Console.WriteLine(Convert.ToString(failIntS[0], 2).PadLeft(8, '0'));

        Console.WriteLine(Convert.ToString(failIntS[1], 2).PadLeft(8, '0'));

        string success = "MEQCIHpDRriOIExTuSu/Pps+wz53QNBIVvkZkpKqKDvPL18fAiA3gbgWgHeXLbS/VH55yQsISkJF0enJpDmpVL4k+I5Sng==";

        byte[] successBytes = Convert.FromBase64String(success);

        AsnReader asnReadersuccess = new(new ReadOnlyMemory<byte>(successBytes), AsnEncodingRules.DER);

        var successSeq = asnReadersuccess.ReadSequence();

        var successIntR = successSeq.ReadIntegerBytes().ToArray();

        var successIntS = successSeq.ReadIntegerBytes().ToArray();

        Console.WriteLine("Success R: " + Convert.ToHexString(successIntR) + ", Should remove leading 00: " + ShouldRemoveLeadingZeroes(successIntR));

        Console.WriteLine("Success S: " + Convert.ToHexString(successIntS) + ", Should remove leading 00: " + ShouldRemoveLeadingZeroes(successIntS));

    }

}