/// <summary>
/// Create an RSA parameter based on the XML Format private key
/// </summary>
/// <param name="privateKey"></param>
/// <returns>RSAParameters</returns>
protected sealed override RSAParameters CreateRsapFromPrivateKey(string privateKey)
{
privateKey = RsaPemFormatHelper.Pkcs8PrivateKeyFormatRemove(privateKey);
RsaPrivateCrtKeyParameters privateKeyParam = (RsaPrivateCrtKeyParameters)PrivateKeyFactory.CreateKey(Convert.FromBase64String(privateKey));
RSAParameters rsap = new RSAParameters();
rsap.Modulus = privateKeyParam.Modulus.ToByteArrayUnsigned();
rsap.Exponent = privateKeyParam.PublicExponent.ToByteArrayUnsigned();
rsap.P = privateKeyParam.P.ToByteArrayUnsigned();
rsap.Q = privateKeyParam.Q.ToByteArrayUnsigned();
rsap.DP = privateKeyParam.DP.ToByteArrayUnsigned();
rsap.DQ = privateKeyParam.DQ.ToByteArrayUnsigned();
rsap.InverseQ = privateKeyParam.QInv.ToByteArrayUnsigned();
rsap.D = privateKeyParam.Exponent.ToByteArrayUnsigned();
return(rsap);
}
/// <summary>
/// Convert RSA Private Key from PKCS8 to XML format
/// </summary>
/// <param name="privateKey">Private Key</param>
/// <returns></returns>
public static string PrivateKeyPkcs8ToXml(string privateKey)
{
privateKey = RsaPemFormatHelper.Pkcs8PrivateKeyFormatRemove(privateKey);
RsaPrivateCrtKeyParameters privateKeyParam = (RsaPrivateCrtKeyParameters)PrivateKeyFactory.CreateKey(Convert.FromBase64String(privateKey));
XElement privatElement = new XElement("RSAKeyValue");
XElement primodulus = new XElement("Modulus", Convert.ToBase64String(privateKeyParam.Modulus.ToByteArrayUnsigned()));
XElement priexponent = new XElement("Exponent", Convert.ToBase64String(privateKeyParam.PublicExponent.ToByteArrayUnsigned()));
XElement prip = new XElement("P", Convert.ToBase64String(privateKeyParam.P.ToByteArrayUnsigned()));
XElement priq = new XElement("Q", Convert.ToBase64String(privateKeyParam.Q.ToByteArrayUnsigned()));
XElement pridp = new XElement("DP", Convert.ToBase64String(privateKeyParam.DP.ToByteArrayUnsigned()));
XElement pridq = new XElement("DQ", Convert.ToBase64String(privateKeyParam.DQ.ToByteArrayUnsigned()));
XElement priinverseQ = new XElement("InverseQ", Convert.ToBase64String(privateKeyParam.QInv.ToByteArrayUnsigned()));
XElement prid = new XElement("D", Convert.ToBase64String(privateKeyParam.Exponent.ToByteArrayUnsigned()));
privatElement.Add(primodulus);
privatElement.Add(priexponent);
privatElement.Add(prip);
privatElement.Add(priq);
privatElement.Add(pridp);
privatElement.Add(pridq);
privatElement.Add(priinverseQ);
privatElement.Add(prid);
return(privatElement.ToString());
}