一个使用公钥签名与加密，使用密钥解密的案例。。。

来源：互联网发布：单类信息发布源码编辑：程序博客网时间：2024/06/14 09:05

        static void Main(string[] args)
        {
            string s = "老王头，这周又开始忙了！";
            byte[] data;
            RSACryptoServiceProvider rsp = new RSACryptoServiceProvider();
            System.IO.File.WriteAllText(@"D:\wangran\公钥.xml", rsp.ToXmlString(false));
            System.IO.File.WriteAllText(@"D:\wangran\密钥.xml", rsp.ToXmlString(true));
            //byte[] 公钥 = rsp.ExportCspBlob(false);
            byte[] 密钥 = rsp.ExportCspBlob(true);//负责解密
            //System.IO.File.WriteAllText(@"D:\wangran\公钥.txt", Convert.ToBase64String(公钥));
            System.IO.File.WriteAllText(@"D:\wangran\密钥.txt", Convert.ToBase64String(密钥));
            data = System.Text.UTF8Encoding.UTF8.GetBytes(s);
            byte[] data_1 = rsp.SignData(data, "md5");

            byte[] data1 = rsp.Encrypt(data, false);

            Console.WriteLine(
            System.Text.UTF8Encoding.UTF8.GetString(data));

            Console.WriteLine(
            System.Text.UTF8Encoding.UTF8.GetString(data_1));

            rsp = new RSACryptoServiceProvider();
            //rsp.ImportCspBlob(公钥);
            rsp.FromXmlString(System.IO.File.ReadAllText(@"D:\wangran\公钥.xml"));
            //公钥只签名与加密，不解密
            byte[] data2 = rsp.Encrypt(data, false);
            Console.WriteLine(Convert.ToBase64String(data1));
            Console.WriteLine(Convert.ToBase64String(data2));

            //验签
            Console.WriteLine(rsp.VerifyData(data, "md5", data_1));

            rsp = new RSACryptoServiceProvider();
            //rsp.ImportCspBlob(公钥);
            rsp.FromXmlString(System.IO.File.ReadAllText(@"D:\wangran\公钥.xml"));
            data2 = rsp.Encrypt(data, false);
            Console.WriteLine(Convert.ToBase64String(data1));
            Console.WriteLine(Convert.ToBase64String(data2));

            //验签
            Console.WriteLine(rsp.VerifyData(data, "md5", data_1));
        }

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