AES 256加密：如何生成和使用公钥和私钥.net

在.Net中，您可以这样创建密钥对：

public static Tuple<string, string> CreateKeyPair(){    CspParameters cspParams = new CspParameters { ProviderType = 1 };    RSACryptoServiceProvider rsaProvider = new RSACryptoServiceProvider(1024, cspParams);    string publicKey = Convert.Tobase64String(rsaProvider.ExportCspBlob(false));    string privateKey = Convert.Tobase64String(rsaProvider.ExportCspBlob(true));    return new Tuple<string, string>(privateKey, publicKey);}

然后，您可以使用公共密钥对消息进行加密，如下所示：

public static byte[] Encrypt(string publicKey, string data){    CspParameters cspParams = new CspParameters { ProviderType = 1 };    RSACryptoServiceProvider rsaProvider = new RSACryptoServiceProvider(cspParams);    rsaProvider.importCspBlob(Convert.Frombase64String(publicKey));    byte[] plainBytes = Encoding.UTF8.GetBytes(data);    byte[] encryptedBytes = rsaProvider.Encrypt(plainBytes, false);    return encryptedBytes;}

并使用私钥像这样解密：

public static string Decrypt(string privateKey, byte[] encryptedBytes){    CspParameters cspParams = new CspParameters { ProviderType = 1 };    RSACryptoServiceProvider rsaProvider = new RSACryptoServiceProvider(cspParams);    rsaProvider.importCspBlob(Convert.Frombase64String(privateKey));    byte[] plainBytes = rsaProvider.Decrypt(encryptedBytes, false);    string plainText = Encoding.UTF8.GetString(plainBytes, 0, plainBytes.Length);    return plainText;}