using System;
using System.Security.Cryptography;
using System.Security.Cryptography.X509Certificates;
using System.Text;
using System.Text.RegularExpressions;
using System.Web;
public class CryptoUtility
{
public static string GetPublicKeyHash(X509Certificate certificate)
{
byte[] rawcert = certificate.GetRawCertData();
X509Certificate x509Cert = new X509Certificate(rawcert);
SHA256 sha = new SHA256Managed();
byte[] hashvalue = sha.ComputeHash(x509Cert.GetPublicKey());
return Convert.ToBase64String(hashvalue);
}
}