public static AsymmetricAlgorithm GetPublicKeyAlgorithm(this X509Certificate2 certificate)
{
if (certificate == null)
{
throw ExceptionUtility.ArgumentNull("certificate");
}
var cspObject = new GostKeyExchangeParameters();
cspObject.DecodeParameters(certificate.PublicKey.EncodedParameters.RawData);
cspObject.DecodePublicKey(certificate.PublicKey.EncodedKeyValue.RawData);
var cspBlobData = CryptoApiHelper.EncodePublicBlob(cspObject);
var publicKey = new Gost3410AsymmetricAlgorithm();
publicKey.ImportCspBlob(cspBlobData);
return publicKey;
}
