public static RSA ToRSA(RsaPrivateCrtKeyParameters privKey)
{
return CreateRSAProvider(ToRSAParameters(privKey));
}
public static RSAParameters ToRSAParameters(RsaPrivateCrtKeyParameters privKey)
{
RSAParameters rp = new RSAParameters();
rp.Modulus = privKey.Modulus.ToByteArrayUnsigned();
rp.Exponent = privKey.PublicExponent.ToByteArrayUnsigned();
rp.P = privKey.P.ToByteArrayUnsigned();
rp.Q = privKey.Q.ToByteArrayUnsigned();
rp.D = ConvertRSAParametersField(privKey.Exponent, rp.Modulus.Length);
rp.DP = ConvertRSAParametersField(privKey.DP, rp.P.Length);
rp.DQ = ConvertRSAParametersField(privKey.DQ, rp.Q.Length);
rp.InverseQ = ConvertRSAParametersField(privKey.QInv, rp.Q.Length);
return rp;
}
public static AsymmetricCipherKeyPair GetRsaKeyPair(
RSAParameters rp)
{
BigInteger modulus = new BigInteger(1, rp.Modulus);
BigInteger pubExp = new BigInteger(1, rp.Exponent);
RsaKeyParameters pubKey = new RsaKeyParameters(
false,
modulus,
pubExp);
RsaPrivateCrtKeyParameters privKey = new RsaPrivateCrtKeyParameters(
modulus,
pubExp,
new BigInteger(1, rp.D),
new BigInteger(1, rp.P),
new BigInteger(1, rp.Q),
new BigInteger(1, rp.DP),
new BigInteger(1, rp.DQ),
new BigInteger(1, rp.InverseQ));
return new AsymmetricCipherKeyPair(pubKey, privKey);
}
