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   源码介绍

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Web;
using System.Security.Cryptography;
using System.IO;

namespace rsa
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            RSAHelper helper = new RSAHelper();
            string halg = "MD5";//SHA1 MD5 SHA256
            Dictionary<string, string> sign_str = Lib.Decode(this.textBox1.Text.Trim());
            string url = Lib.GetParamSrc(sign_str);
            string sign_str_1 = helper.Sign(url, halg);
            this.richTextBox1.Text  = "sign_str_1:"   sign_str_1;
            this.richTextBox1.Text  = "\r\n"   "\r\n";
            this.textBox2.Text = sign_str_1;
        }
        private void button2_Click(object sender, EventArgs e)
        {
            string content, publicCSharpKey;
            content = this.textBox1.Text.Trim();
            Dictionary<string, string> sign_str = Lib.Decode(content);
            string url = Lib.GetParamSrc(sign_str);
            publicCSharpKey = Lib.GetCSharpPublickey();
            string halg = "MD5";//SHA1 MD5 SHA256
            string sing_res = this.textBox2.Text.Trim();
            this.richTextBox1.Text  = "传递签名："   sing_res;
            this.richTextBox1.Text  = "\r\n";
            this.richTextBox1.Text  = "签名一致："   RSAHelper.VerifyData(publicCSharpKey, url, sing_res, halg);
        }

        private void button4_Click(object sender, EventArgs e)
        {
            this.textBox2.Text = "";
            this.richTextBox1.Clear();
        }
        public static string DecodeBase64(string code_type, string code)
        {
            string decode = "";
            byte[] bytes = Convert.FromBase64String(code);
            try
            {
                decode = Encoding.GetEncoding(code_type).GetString(bytes);
            }
            catch
            {
                decode = code;
            }
            return decode;
        }
        public static string EncodeBase64(string code_type, string code)
        {
            string encode = "";
            byte[] bytes = Encoding.GetEncoding(code_type).GetBytes(code);
            try
            {
                encode = Convert.ToBase64String(bytes);
            }
            catch
            {
                encode = code;
            }
            return encode;
        }
        private void button8_Click(object sender, EventArgs e)
        {
            GenerateKeys();
        }
        public static void GenerateKeys()
        {
            RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
            using (StreamWriter writer = new StreamWriter("PrivateKey.xml"))  //这个文件要保密...
            {
                writer.WriteLine(rsa.ToXmlString(true));
            }
            using (StreamWriter writer = new StreamWriter("PublicKey.xml"))
            {
                writer.WriteLine(rsa.ToXmlString(false));
            }
        }
    }
}