在 c# 中使用 RSACryptoServiceProvider 查找公钥和私钥 [英] Find the public and private keys using RSACryptoServiceProvider in c#

问题描述

我有以下代码.

RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();
//Save the public key information to an RSAParameters structure.
RSAParameters RSAKeyInfo = RSA.ExportParameters(true);

byte[] toEncryptData = Encoding.ASCII.GetBytes("hello world");
byte[] encryptedRSA = RSAEncrypt(toEncryptData, RSAKeyInfo, false);
string EncryptedResult = System.Text.Encoding.Default.GetString(encryptedRSA);

byte[] decryptedRSA = RSADecrypt(encryptedRSA, RSAKeyInfo, false);
string originalResult = System.Text.Encoding.Default.GetString(decryptedRSA);
return userDetails.ToString();

当我使用 RSAEncrypt 方法时，它采用参数RSAKeyInfo"(用于加密的公钥和用于解密的私钥).

When I use the RSAEncrypt method it takes the parameter "RSAKeyInfo" (Public key for encryption and Private key for decryption).

如何获取私钥和​​公钥的值，该方法用于加密和解密.

How can I get the value of private and public keys, which this method used for encryption and decryption.

谢谢，

推荐答案

您需要使用 RSA.ToXmlString

下面的代码使用两个不同的 RSA 实例，其中包含一个包含公钥和私钥的共享字符串.要只获取公钥，请使用false 参数，true 参数将返回公钥+私钥.

Code below uses two different RSA instances with a shared string containing public and private keys. To obtain only public key, use a false parameters, true parameter will return public + private key.

class Program
{
    public static void Main(string[] args)
    {
        //Encrypt and export public and private keys
        var rsa1 = new RSACryptoServiceProvider();
        string publicPrivateXml = rsa1.ToXmlString(true);   // <<<<<<< HERE
        byte[] toEncryptData = Encoding.ASCII.GetBytes("hello world");
        byte[] encryptedRSA = rsa1.Encrypt(toEncryptData, false);
        string EncryptedResult = Encoding.Default.GetString(encryptedRSA);

        //Decrypt using exported keys
        var rsa2 = new RSACryptoServiceProvider();
        rsa2.FromXmlString(publicPrivateXml);    
        byte[] decryptedRSA = rsa2.Decrypt(encryptedRSA, false);
        string originalResult = Encoding.Default.GetString(decryptedRSA);

    }
}

这篇关于在 c# 中使用 RSACryptoServiceProvider 查找公钥和私钥的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！