public static void FromPkcs1PrivateString(this RSA rsa, string privateKey, out RSAParameters parameters)
{
privateKey = RSAPemFormatHelper.Pkcs1PrivateKeyFormatRemove(privateKey);
var pr = new PemReader(new StringReader(privateKey));
if (!(pr.ReadObject() is AsymmetricCipherKeyPair asymmetricCipherKeyPair))
{
throw new Exception("Private key format is incorrect");
}
var rsaPrivateCrtKeyParameters = (RsaPrivateCrtKeyParameters)PrivateKeyFactory.CreateKey(
PrivateKeyInfoFactory.CreatePrivateKeyInfo(asymmetricCipherKeyPair.Private));
parameters = new RSAParameters
{
Modulus = rsaPrivateCrtKeyParameters.Modulus.ToByteArrayUnsigned(),
Exponent = rsaPrivateCrtKeyParameters.PublicExponent.ToByteArrayUnsigned(),
P = rsaPrivateCrtKeyParameters.P.ToByteArrayUnsigned(),
Q = rsaPrivateCrtKeyParameters.Q.ToByteArrayUnsigned(),
DP = rsaPrivateCrtKeyParameters.DP.ToByteArrayUnsigned(),
DQ = rsaPrivateCrtKeyParameters.DQ.ToByteArrayUnsigned(),
InverseQ = rsaPrivateCrtKeyParameters.QInv.ToByteArrayUnsigned(),
D = rsaPrivateCrtKeyParameters.Exponent.ToByteArrayUnsigned()
};
rsa.ImportParameters(parameters);
}
/// <summary>
/// Import RSA private key
/// </summary>
/// <param name="rsa"></param>
/// <param name="type"></param>
/// <param name="privateKey"></param>
/// <param name="isPem"></param>
public static void ImportPrivateKey(this RSA rsa, RSAKeyTypes type, string privateKey, bool isPem = false)
{
if (isPem)
{
privateKey = type switch
{
RSAKeyTypes.XML => privateKey,
RSAKeyTypes.JSON => privateKey,
RSAKeyTypes.Pkcs1 => RSAPemFormatHelper.Pkcs1PrivateKeyFormatRemove(privateKey),
RSAKeyTypes.Pkcs8 => RSAPemFormatHelper.Pkcs8PrivateKeyFormatRemove(privateKey),
_ => throw new NotSupportedException("Unknown RSA key type.")
};
}
switch (type)
{
case RSAKeyTypes.XML:
rsa.FromLvccXmlString(privateKey);
break;
case RSAKeyTypes.JSON:
rsa.FromJsonString(privateKey);
break;
case RSAKeyTypes.Pkcs1:
#if NETCOREAPP3_1 || NETSTANDARD2_1
rsa.ImportRSAPrivateKey(Convert.FromBase64String(privateKey), out _);
#else
rsa.FromPkcs1PrivateString(privateKey, out _);
#endif
break;
case RSAKeyTypes.Pkcs8:
#if NETCOREAPP3_1 || NETSTANDARD2_1
rsa.ImportPkcs8PrivateKey(Convert.FromBase64String(privateKey), out _);
#else
rsa.FromPkcs8PrivateString(privateKey, out _);
#endif
break;
}
}