using System;

using System.Linq;

public class Program

{

    public static void Main()

    {

        // Insert base 64 certificate here (without -----BEGIN CERTIFICATE-----/-----END CERTIFICATE-----):

        var cert = @"MIIDdDCCAxqgAwIBAgITewAAACBtOmv/J9IKcQAAAAAAIDAKBggqhkjOPQQDAjA/

MQswCQYDVQQGEwJOTzEbMBkGA1UEChMSTm9yc2sgaGVsc2VuZXR0IFNGMRMwEQYD

VQQDEwpDU0NBIE5PIHYxMB4XDTIxMDYwNzExMDA1MVoXDTIzMDYwNzExMTA1MVow

UjELMAkGA1UEBhMCTk8xLTArBgNVBAoTJE5vcndlZ2lhbiBJbnN0aXR1dGUgb2Yg

UHVibGljIEhlYWx0aDEUMBIGA1UEAxMLRFNDIEhOIE5PIDEwggGiMA0GCSqGSIb3

DQEBAQUAA4IBjwAwggGKAoIBgQDn+GCvGBL8tVbG0q4YChSOn04CXgqHBOwOTs87

iPA2qsngH0Dfq0lGMQBeVjxfrcxQXuzOvnMXZbiqyvjZjyEMWiY1O5HAMYTQJJXu

/Tb11vcseSuNFL7mPNdvf3aBI6Or7GZZlc/gc9O48gf8UhlJ+/o4Mp6OsxnnTlS5

7W2k2NcoXsxrzY8T1ysbOAD9yySVxd8FH0RCYQsdhsE2gDvHH+tBHMMm+FNrZvwj

Z1QHqE2nn1ITPw/Ug0K0vDZlbqAP1aqJHmCvt38g1eGHcY6dpXoaVys3wnWWdb1T

x2nEMt7za6aOlV4npnGxmDTV9omMR+P7fhoXkzKAZCjpoipDSis4UQC2tS0j76n4

KCWFgTMS4rfsODlV5nSgjOPNyFMKVcCIqhRxMxy2WefZ3gnkMlPkvwvOENwpiSJ3

rJELmpkxzwdMXcp7JRoapYyYJOvSG/PGjq94WdEn+Jg06A58oM8QDXSFOiIXdJ5x

rsxwe4DSJ/mFwp4EwTCGXBNIR/0CAwEAAaOBljCBkzAOBgNVHQ8BAf8EBAMCB4Aw

MwYDVR0lBCwwKgYMKwYBBAEAjjePZQEBBgwrBgEEAQCON49lAQIGDCsGAQQBAI43

j2UBAzAdBgNVHQ4EFgQUwtTBS5fGDXZh408PFxmzeyblw1kwHwYDVR0jBBgwFoAU

QWNy9nnDwXH38YESNlIQoyUKdCcwDAYDVR0TAQH/BAIwADAKBggqhkjOPQQDAgNI

ADBFAiAz16tf3HU5GBtsaGWTcXqzp3NKNbNioJvcJY2YHH70jQIhAN6m/8VDP1gP

6fQgN9FVG8llc1QAURCWa2GJaTvawtgt";

        var xcert = new System.Security.Cryptography.X509Certificates.X509Certificate2(Convert.FromBase64String(cert));

​

        using (var sha = System.Security.Cryptography.SHA256.Create())

        {

            Console.WriteLine("Kid:");

            Console.WriteLine(Convert.ToBase64String(sha.ComputeHash(Convert.FromBase64String(cert)).Take(8).ToArray()));

        }

        Console.WriteLine();

        Console.WriteLine("Public Key:");

        Console.WriteLine(Convert.ToBase64String(xcert.PublicKey.EncodedKeyValue.RawData));

    }

}