C#实现简单的RSA非对称加密算法示例

本文实例讲述了c#实现简单的rsa非对称加密算法。分享给大家供大家参考，具体如下：

界面控件

namespace rsa算法
{
  partial class form1
  {
    /// <summary>
    /// 必需的设计器变量。
    /// </summary>
    private system.componentmodel.icontainer components = null;
    /// <summary>
    /// 清理所有正在使用的资源。
    /// </summary>
    /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
    protected override void dispose(bool disposing)
    {
      if (disposing && (components != null))
      {
        components.dispose();
      }
      base.dispose(disposing);
    }
    #region windows 窗体设计器生成的代码
    /// <summary>
    /// 设计器支持所需的方法 - 不要
    /// 使用代码编辑器修改此方法的内容。
    /// </summary>
    private void initializecomponent()
    {
      this.strbox = new system.windows.forms.textbox();
      this.label1 = new system.windows.forms.label();
      this.pubkeybox = new system.windows.forms.textbox();
      this.label2 = new system.windows.forms.label();
      this.prvkeybox = new system.windows.forms.textbox();
      this.label3 = new system.windows.forms.label();
      this.encrypebox = new system.windows.forms.textbox();
      this.label4 = new system.windows.forms.label();
      this.label5 = new system.windows.forms.label();
      this.str2box = new system.windows.forms.textbox();
      this.crypebtn = new system.windows.forms.button();
      this.suspendlayout();
      //
      // strbox
      //
      this.strbox.location = new system.drawing.point(115, 12);
      this.strbox.name = "strbox";
      this.strbox.size = new system.drawing.size(258, 21);
      this.strbox.tabindex = 0;
      //
      // label1
      //
      this.label1.autosize = true;
      this.label1.location = new system.drawing.point(11, 18);
      this.label1.name = "label1";
      this.label1.size = new system.drawing.size(77, 12);
      this.label1.tabindex = 1;
      this.label1.text = "加密前的明文";
      //
      // pubkeybox
      //
      this.pubkeybox.location = new system.drawing.point(115, 78);
      this.pubkeybox.multiline = true;
      this.pubkeybox.name = "pubkeybox";
      this.pubkeybox.size = new system.drawing.size(258, 74);
      this.pubkeybox.tabindex = 2;
      //
      // label2
      //
      this.label2.autosize = true;
      this.label2.location = new system.drawing.point(11, 87);
      this.label2.name = "label2";
      this.label2.size = new system.drawing.size(29, 12);
      this.label2.tabindex = 3;
      this.label2.text = "公钥";
      //
      // prvkeybox
      //
      this.prvkeybox.location = new system.drawing.point(115, 158);
      this.prvkeybox.multiline = true;
      this.prvkeybox.name = "prvkeybox";
      this.prvkeybox.size = new system.drawing.size(258, 128);
      this.prvkeybox.tabindex = 4;
      //
      // label3
      //
      this.label3.autosize = true;
      this.label3.location = new system.drawing.point(13, 167);
      this.label3.name = "label3";
      this.label3.size = new system.drawing.size(101, 12);
      this.label3.tabindex = 5;
      this.label3.text = "密钥（包含私钥）";
      //
      // encrypebox
      //
      this.encrypebox.location = new system.drawing.point(115, 292);
      this.encrypebox.name = "encrypebox";
      this.encrypebox.size = new system.drawing.size(258, 21);
      this.encrypebox.tabindex = 6;
      //
      // label4
      //
      this.label4.autosize = true;
      this.label4.location = new system.drawing.point(14, 299);
      this.label4.name = "label4";
      this.label4.size = new system.drawing.size(29, 12);
      this.label4.tabindex = 7;
      this.label4.text = "密文";
      //
      // label5
      //
      this.label5.autosize = true;
      this.label5.location = new system.drawing.point(14, 329);
      this.label5.name = "label5";
      this.label5.size = new system.drawing.size(77, 12);
      this.label5.tabindex = 8;
      this.label5.text = "解密后的明文";
      //
      // str2box
      //
      this.str2box.location = new system.drawing.point(115, 320);
      this.str2box.name = "str2box";
      this.str2box.size = new system.drawing.size(258, 21);
      this.str2box.tabindex = 9;
      //
      // crypebtn
      //
      this.crypebtn.location = new system.drawing.point(117, 43);
      this.crypebtn.name = "crypebtn";
      this.crypebtn.size = new system.drawing.size(104, 23);
      this.crypebtn.tabindex = 10;
      this.crypebtn.text = "执行加密解密";
      this.crypebtn.usevisualstylebackcolor = true;
      this.crypebtn.click += new system.eventhandler(this.crypebtn_click);
      //
      // form1
      //
      this.autoscaledimensions = new system.drawing.sizef(6f, 12f);
      this.autoscalemode = system.windows.forms.autoscalemode.font;
      this.clientsize = new system.drawing.size(385, 353);
      this.controls.add(this.crypebtn);
      this.controls.add(this.str2box);
      this.controls.add(this.label5);
      this.controls.add(this.label4);
      this.controls.add(this.encrypebox);
      this.controls.add(this.label3);
      this.controls.add(this.prvkeybox);
      this.controls.add(this.label2);
      this.controls.add(this.pubkeybox);
      this.controls.add(this.label1);
      this.controls.add(this.strbox);
      this.name = "form1";
      this.text = "rsa非对称加密解密";
      this.resumelayout(false);
      this.performlayout();
    }
    #endregion
    private system.windows.forms.textbox strbox;
    private system.windows.forms.label label1;
    private system.windows.forms.textbox pubkeybox;
    private system.windows.forms.label label2;
    private system.windows.forms.textbox prvkeybox;
    private system.windows.forms.label label3;
    private system.windows.forms.textbox encrypebox;
    private system.windows.forms.label label4;
    private system.windows.forms.label label5;
    private system.windows.forms.textbox str2box;
    private system.windows.forms.button crypebtn;
  }
}

rsa代码

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.security.cryptography;
namespace rsa算法
{
  public partial class form1 : form
  {
    public form1()
    {
      initializecomponent();
    }
    private void crypebtn_click(object sender, eventargs e)
    {
      //创建rsa加密算法服务提供者
      rsacryptoserviceprovider rsa = new rsacryptoserviceprovider();
      //显示公钥和私钥
      pubkeybox.text = rsa.toxmlstring(false);
      prvkeybox.text = rsa.toxmlstring(true);
      //执行加密
      byte[] encrypebytes = rsa.encrypt(encoding.utf8.getbytes(strbox.text), true);
      encrypebox.text = encoding.utf8.getstring(encrypebytes);
      //执行解密
      byte[] decrypebytes = rsa.decrypt(encrypebytes, true);
      str2box.text = encoding.utf8.getstring(decrypebytes);
    }
  }
}

运行效果：

ps：关于加密解密感兴趣的朋友还可以参考本站在线工具：

文字在线加密解密工具（包含aes、des、rc4等）：

md5在线加密工具:
http://tools.jb51.net/password/createmd5password

在线散列/哈希算法加密工具:

在线md5/hash/sha-1/sha-2/sha-256/sha-512/sha-3/ripemd-160加密工具：

在线sha1/sha224/sha256/sha384/sha512加密工具：

更多关于c#相关内容还可查看本站专题：《c#加密与解密算法与技巧总结》、《c#窗体操作技巧汇总》、《c#常见控件用法教程》、《winform控件用法总结》、《c#数据结构与算法教程》、《c#数组操作技巧总结》及《c#面向对象程序设计入门教程》

希望本文所述对大家c#程序设计有所帮助。