public static void FromPkcs1PublicString(this RSA rsa, string publicKey, out RSAParameters parameters)
{
publicKey = RSAPemFormatHelper.Pkcs1PublicKeyFormatRemove(publicKey);
var pr = new PemReader(new StringReader(publicKey));
if (!(pr.ReadObject() is RsaKeyParameters rsaKey))
{
throw new Exception("Public key format is incorrect");
}
parameters = new RSAParameters
{
Modulus = rsaKey.Modulus.ToByteArrayUnsigned(),
Exponent = rsaKey.Exponent.ToByteArrayUnsigned()
};
rsa.ImportParameters(parameters);
}
/// <summary>
/// Import RSA public key
/// </summary>
/// <param name="rsa"></param>
/// <param name="type"></param>
/// <param name="publicKey"></param>
/// <param name="isPem"></param>
public static void ImportPublicKey(this RSA rsa, RSAKeyTypes type, string publicKey, bool isPem = false)
{
if (isPem)
{
publicKey = type switch
{
RSAKeyTypes.XML => publicKey,
RSAKeyTypes.JSON => publicKey,
RSAKeyTypes.Pkcs1 => RSAPemFormatHelper.Pkcs1PublicKeyFormatRemove(publicKey),
RSAKeyTypes.Pkcs8 => RSAPemFormatHelper.Pkcs8PublicKeyFormatRemove(publicKey),
_ => throw new NotSupportedException("Unknown RSA key type.")
};
}
switch (type)
{
case RSAKeyTypes.XML:
rsa.FromLvccXmlString(publicKey);
break;
case RSAKeyTypes.JSON:
rsa.FromJsonString(publicKey);
break;
case RSAKeyTypes.Pkcs1:
#if NETCOREAPP3_1 || NETSTANDARD2_1
rsa.ImportRSAPublicKey(Convert.FromBase64String(publicKey), out _);
break;
#else
rsa.FromPkcs1PublicString(publicKey, out _);
break;
#endif
case RSAKeyTypes.Pkcs8:
#if NETCOREAPP3_1 || NETSTANDARD2_1
rsa.ImportRSAPublicKey(Convert.FromBase64String(publicKey), out _);
break;
#else
rsa.FromPkcs8PublicString(publicKey, out _);
break;
#endif
}
}