.NET等效于Java KeyFactory.getInstance；RSA"/&引用；RSA/ECB/PKCS1P添加“；

我有以下代码

public static String encrypt(String plainText, String key){
    try{
        PublicKey publicKey = KeyFactory.getInstance("RSA").generatePublic(new X509EncodedKeySpec(Base64.decode(key, Base64.DEFAULT)));
        Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");
        cipher.init(Cipher.ENCRYPT_MODE, publicKey);
        return Base64.encodeToString(cipher.doFinal(plainText.getBytes("UTF-8")),Base64.DEFAULT);
    }catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}

我想把它转换成C。我试过CryptUtils，但不起作用

示例键

MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ9AMIIBCgKCAQEAoqB1N9kugk4UKYnbh0fcg3qYyYKP0m4B
MjWd05ReeAdj+7JRYDEKO6xthDdVSdRO1/2V+YtY8DnXWnxRaICwu8235s3imZCyqgYnomPWdY+F
K540oTz/zug+9wbrlzt/WQFUU4lPlQbzm/Gjw8XfaCozT0e3bnWQcD7rORCOyuJgwSGgREjTv1ss
pgEaKTMknii9vpGZLeAXwoeIYROhuT4IoIkPDhtY0/UZiCi6v7Ja2dmy53VlWIkcm3rcnSJdvpXr
OgiHvaNABHmeymNycNqd6WUaysBRheluQ86nq/2nZPW0gcvmYt5zbMMYX3yY/n2WtAKeNQBAEW1q
b0s6MwIDAQAB

可能的镶嵌值

Y3VTjghDnTrCeG8C/RklKsJ3Y0Mt89sSGGin28E4iQPQvKqeZBws7rBQEZaRamDWftxCkEYZs4Qh
V2l4IVlrawdtRmQlcQh8McrpqP/97Gz8pEDEYnqA7kqBTqZw0Z5o0WsshGSwiAQ9wNSym4xHejkq
zrKxWP8XCMkcT0NlKlRMoqKKICFKZbqWeSQkQM5y9OEcmB6inNNkJCoM1Ip48+cK3cOE6dqXNVrl
sSTZ8WQKwoB3dJmcYqexR3kAvBYdX6ZxEF+2+6b9h8+tc5G7Y5R2eqycyUossdkCcI3fNVhyc72P
axCjZFWZUgfDGCxg1WNhStrH9L8c59P35JKKug==

---

因为我没有私钥，所以无法解密，但至少这会产生正确的长度值

因此，请尝试以下方法（阅读pem需要bouncycastle）：

---

你能添加一个示例明文、密钥和返回值吗？@zaitsman我已经添加了我的密钥。请也添加一个示例明文和输出（例如，当你用这个密钥说encrypt'helloworld'时，你会得到什么？@zaitsman，我只是在做amount=1和currency=AEDuser960567，这很好。你能告诉我当你的java方法运行时，结果base64是什么样子的吗？AsymmetricKeyParameter和其他类在哪里？就像我说的，你需要bouncycastle。问题是找到指数和模。@tasos-k感谢名称空间，ReSharper luxury让我不用担心them@zaitsman使用VS2015也相当容易。经过几天的搜索，你的回答真的帮助了我。

using Org.BouncyCastle.Crypto;
using Org.BouncyCastle.Crypto.Parameters;
using Org.BouncyCastle.Security;

 var keyBytes =
    Convert.FromBase64String(
      "MIIBI...."); // your key here

  AsymmetricKeyParameter asymmetricKeyParameter = PublicKeyFactory.CreateKey(keyBytes);
  RsaKeyParameters rsaKeyParameters = (RsaKeyParameters)asymmetricKeyParameter;
  RSAParameters rsaParameters = new RSAParameters();
  rsaParameters.Modulus = rsaKeyParameters.Modulus.ToByteArrayUnsigned();
  rsaParameters.Exponent = rsaKeyParameters.Exponent.ToByteArrayUnsigned();
  RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
  rsa.ImportParameters(rsaParameters);

  byte[] plaintext = Encoding.UTF8.GetBytes("amount=1&currency=AED");
  byte[] ciphertext = rsa.Encrypt(plaintext, false);
  string cipherresult = Convert.ToBase64String(ciphertext);