RSACryptoServiceProvider 用自己的公钥和私钥初始化 [英] RSACryptoServiceProvider initialize with own public key and private key

问题描述

我正在尝试使用我自己的公钥和私钥初始化 RSACryptoServiceProvider.

I'm trying to initialize RSACryptoServiceProvider with my own public and private keys.

据我所知，这样做的方法是使用

As far as I could research, the way to do this is to call the constructor with

RSACryptoServiceProvider RSAalg = new RSACryptoServiceProvider(cspParams);

cspParams 如上所示.但是，当我查看有关使用它的 msdn 示例时:http://msdn.microsoft.com/en-us/library/ca5htw4f.aspx

cspParams as shown above. However, when I look at the msdn example on the use of it: http://msdn.microsoft.com/en-us/library/ca5htw4f.aspx

我没有看到他们设置私钥或公钥的任何地方.仅使用 KeyContainer.当我创建一个没有 cspParam 的 RSACryptoServiceProvider 时，它默认设置为仅使用公钥.当我检查类本身的 PublicOnly 变量时，我注意到了这一点，它是一个只读变量.

I don't see any place where they set the private or public keys. Only using a KeyContainer. When I create an RSACryptoServiceProvider without a cspParam, then it is by default set to only use a Public key. I notice this when I check the PublicOnly variable on the class itself and it is a read only variable.

我的问题是如何初始化这个类，然后设置我自己的私钥和公钥.服务器将使用私钥，客户端将拥有公钥.

我发现创建一个 RSAParameter 对象并将其上的 .Exponent 和 .Modulus 参数分别设置为公共和私有变量.

What I found out is that creating an RSAParameter object and setting the .Exponent and .Modulus parameters on it as the public and private variables respectively.

但我收到 "Missing Private Key" 错误，因为我认为 RSACryptoServiceProvider 未使用正确的构造函数进行初始化.

But I'm getting a "Missing Private Key" error since I believe the RSACryptoServiceProvider isn't initialized with the correct constructor.

以下是我的一些代码.不用担心 BigInteger 类，这只是一个实验.不管我是否使用它，我都会得到同样的错误.

Below is some of my code. Don't worry about BigInteger class, it's just an experiment. Even if I use it or not, I get the same error.

//Create a UnicodeEncoder to convert between byte array and string.
UnicodeEncoding ByteConverter = new UnicodeEncoding();

byte[] dataToEncrypt = ByteConverter.GetBytes(password);
byte[] encryptedData;
byte[] decryptedData;

//RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();
RSAParameters rsap = new RSAParameters();

BigInteger n = new BigInteger("19579160939939334264971282204525611731944172893619019759209712156289528980860378672033164235760825723282900348193871051950190013953658941960463089031452404364269503721476236241284015792700835264262839734314564696723261501877759107784604657504350348081273959965406686529089170062268136253938904906635532824296510859016002105655690559115059267476786307037941751235763572931501055146976797606538425089134251611194500570922973015579287289778637105402129208324300035518642730384616767241853993887666288072512402523498267733725021939287517009966986976768028023180137546958580922532786773172365428677544232641888174470601681", 10);

BigInteger e = new BigInteger("65537", 10);

//rsap.Modulus = ByteConverter.GetBytes(publicKey);
rsap.Exponent = e.getBytes();
rsap.Modulus = n.getBytes();
  /*rsap.Exponent = ByteConverter.GetBytes(publicKey);
    rsap.D = ByteConverter.GetBytes(publicKey);
    rsap.DP = ByteConverter.GetBytes(publicKey);
    rsap.DQ = ByteConverter.GetBytes(publicKey);
    rsap.P = ByteConverter.GetBytes(publicKey);
    rsap.Q = ByteConverter.GetBytes(publicKey);
    rsap.InverseQ = ByteConverter.GetBytes(publicKey);*/

using (RSACryptoServiceProvider RSA = new RSACryptoServiceProvider())
{
    //RSA.PublicOnly = false;

    RSA.ImportParameters(rsap);

    Debug.Log ("PublicOnly: " + RSA.PublicOnly);

    Debug.Log (rsap.Modulus.Length);
    //Debug.Log (RSA.ToString());
        //Pass the data to ENCRYPT, the public key information  
        //(using RSACryptoServiceProvider.ExportParameters(false), 
        //and a boolean flag specifying no OAEP padding.
        //encryptedData = RSACSPSample.RSAEncrypt(dataToEncrypt, rsap, false);
        encryptedData = RSACSPSample.RSAEncrypt(dataToEncrypt, RSA.ExportParameters(false), false);


        Debug.Log ("encryptedData: " + encryptedData);
        //Display the decrypted plaintext to the console. 
        //Debug.Log("Decrypted plaintext: " + ByteConverter.GetString(""));

        //Pass the data to DECRYPT, the private key information  
        //(using RSACryptoServiceProvider.ExportParameters(true), 
        //and a boolean flag specifying no OAEP padding.
        decryptedData = RSACSPSample.RSADecrypt(encryptedData, RSA.ExportParameters(true), false);
}


//encryptedData = RSACSPSample.RSAEncrypt(dataToEncrypt, rsap, false);

//if (encryptedData != null) {
    password = ByteConverter.GetString(decryptedData);
//}

推荐答案

这些字段的名字很可怕，让你感到困惑.Exponent 字段实际上是公钥的 public 指数.private 私钥的指数是 D 字段.

The fields are horribly named and it is confusing you. The Exponent field is really the public exponent for a public key. The private exponent for a private key is the D field.

MSDN 文档很烂不是你的错.

It is not your fault that MSDN documentation sucks.

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