用JavaScript加密不会在C＃中解密

Question

我正在尝试在JavaScript中使用RSA加密，然后在C＃中对其进行解密。在JavaScript中，我正在使用jsencrypt库。在C＃中，我使用API​​“充气城堡”。当我用相同的语言进行加密/解密时，一切正常。解密时会得到正确的文本。当我尝试用C＃解密用JavaScript加密的内容时，我什么也收不到。我确信两者之间的键是相同的。代码示例如下。任何有关如何解决此问题的帮助将不胜感激。

的JavaScript

//using jsencrypt.min.js

var encrypt = new JSEncrypt();
encrypt.setPublicKey($('#pubkey').val());
var encrypted = encrypt.encrypt($('#input').val());

将我从JavaScript“加密”中获得的值用于C＃中的“ encyp”

    AsymmetricCipherKeyPair KeyParameterPrivate;
        byte[] cipheredBytes = Convert.FromBase64String(encyp);


        string privateKeyFileName = @"C:\private.pem";
        using (var fileStream2 = File.OpenText(privateKeyFileName))
        {
            PemReader pemReader2 = new Org.BouncyCastle.OpenSsl.PemReader(fileStream2);
            KeyParameterPrivate = (Org.BouncyCastle.Crypto.AsymmetricCipherKeyPair)pemReader2.ReadObject();
        }
        IAsymmetricBlockCipher cipher2 = new Org.BouncyCastle.Crypto.Engines.RsaEngine();
        RsaKeyParameters privateKey2 = (RsaKeyParameters)KeyParameterPrivate.Private;
        //cipher.Init(false, publicKey4);
        cipher2.Init(false, privateKey2);
        byte[] deciphered = cipher2.ProcessBlock(cipheredBytes, 0, cipheredBytes.Length);
        string decipheredText = utf8enc.GetString(deciphered);

Answer 1

为什么你要用 BC 来折磨自己呢？

这里最简单的解密方法是：

 // store is a X509Store pointing to the correct store on the target machine
 // You have to ensure that the security principal for your app has access to the private key to decrypt
 X509Certificate2 cert = store.Certificates.Find(X509FindType.FindByThumbprint, "sha1hash", false)[0];

 var prov = (RSACryptoServiceProvider)cert.PrivateKey;
 var decipheredText = Encoding.UTF8.GetString(prov.Decrypt(Convert.FromBase64String(target), false));

显然，您可以从文件或任何其他方式获取 X509Certificate2，例如X509Certificate2 cert = new X509Certificate2(@"C:\someCert.pfx", "somePass");

如果您遵循了 jsencrypt 教程，请使用此 openssl 命令从您拥有的 pems 中获取 pfx：

openssl pkcs12 -export -out certificate.pfx -inkey privateKey.pem -in publicKey.pem