private static RsaKeyParameters GetRsaKeyParameters(string privateKey)
{
var decodedPublicKeyString = Convert.FromBase64String(privateKey);
var inputStream = new Asn1InputStream(decodedPublicKeyString);
var derObject = inputStream.ReadObject();
var asn1Sequence = Asn1Sequence.GetInstance(derObject);
var keyStruct = new RsaPrivateKeyStructure(asn1Sequence);
return new RsaKeyParameters(true, keyStruct.Modulus, keyStruct.PrivateExponent);
}
