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jQuery+C#实现参数RSA加密传输功能【附jsencrypt.js下载】

2017年12月12日  | 移动技术网IT编程  | 我要评论

本文实例讲述了jquery+c#实现参数rsa加密传输功能。分享给大家供大家参考，具体如下：

注意：

参数传递的+号处理，在传输时会把+变成空格，不处理后端就报错了。

1、前端代码

<!doctype html>
<html>
<head>
  <meta name="viewport" content="width=device-width" />
  <title>login</title>
  <script src="jquery-1.10.2.min.js"></script>
  <script src="jsencrypt.min.js"></script>
  <script type="text/javascript">
    $(function () {
      var encrypt = new jsencrypt();
      encrypt.setpublickey($("#tra").val());
      var data = encrypt.encrypt("123456789");
      alert(data);
      $("#btn").click(function () {
        $.ajax({
          url: '@url.action("login")',
          data: "pwd=" + encodeuri(data).replace(/\+/g, '%2b'), //+号的处理：因为数据在网络上传输时，非字母数字字符都将被替换成百分号（%）后跟两位十六进制数，而base64编码在传输到后端的时候，+会变成空格，因此先替换掉。后端再替换回来
          type: 'post',
          success: function (msg) {
            alert(msg);
          }
        });
      });
    });
  </script>
</head>
<body>
  <div>
    <input type="button" id="btn" value="点我" />
    <textarea id="tra" rows="15" cols="65">
      migfma0gcsqgsib3dqebaquaa4gnadcbiqkbgqca4khnwdx44ggmmiatru4gjvyt
gwzzcm4t+1wjud4dn7fmlpvuk7ai4urfdeeje1rpwudjw+lj6crql8wsig7/dbtl
      g3ihsct6dt9h5b9ooer7k9vwuesaw/iyvl6hxiyoanabw14pvjatdmdq91tfgp6p
      sqyvdfirdv4r07crpqidaqab
    </textarea>
    <hr/>
    注意+号的处理
  </div>
</body>
</html>

2、后端代码

public class indexcontroller : controller
{
    public actionresult login()
    {
      return view();
    }
    [httppost]
    public actionresult login(string pwd)
    {
      //密钥格式要生成pkcs#1格式的  而不是pkcs#8格式的
      string privatekey = @"miicwwibaakbgqca4khnwdx44ggmmiatru4gjvytgwzzcm4t+1wjud4dn7fmlpvuk7ai4urfdeeje1rpwudjw+lj6crql8wsig7/dbtlg3ihsct6dt9h5b9ooer7k9vw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";
      try
      {
        rsacryptoserviceprovider rsacryptoserviceprovider = creatersaproviderfromprivatekey(privatekey);
        //把+号，再替换回来
        byte[] res = rsacryptoserviceprovider.decrypt(convert.frombase64string(pwd.replace("%2b","+")), false);
        return content(encoding.utf8.getstring(res));
      }
      catch (exception exception)
      {
      }
      return content("");
    }
    private rsacryptoserviceprovider creatersaproviderfromprivatekey(string privatekey)
    {
      var privatekeybits = system.convert.frombase64string(privatekey);
      var rsa = new rsacryptoserviceprovider();
      var rsaparams = new rsaparameters();
      using (binaryreader binr = new binaryreader(new memorystream(privatekeybits)))
      {
        byte bt = 0;
        ushort twobytes = 0;
        twobytes = binr.readuint16();
        if (twobytes == 0x8130)
          binr.readbyte();
        else if (twobytes == 0x8230)
          binr.readint16();
        else
          throw new exception("unexpected value read binr.readuint16()");
        twobytes = binr.readuint16();
        if (twobytes != 0x0102)
          throw new exception("unexpected version");
        bt = binr.readbyte();
        if (bt != 0x00)
          throw new exception("unexpected value read binr.readbyte()");
        rsaparams.modulus = binr.readbytes(getintegersize(binr));
        rsaparams.exponent = binr.readbytes(getintegersize(binr));
        rsaparams.d = binr.readbytes(getintegersize(binr));
        rsaparams.p = binr.readbytes(getintegersize(binr));
        rsaparams.q = binr.readbytes(getintegersize(binr));
        rsaparams.dp = binr.readbytes(getintegersize(binr));
        rsaparams.dq = binr.readbytes(getintegersize(binr));
        rsaparams.inverseq = binr.readbytes(getintegersize(binr));
      }
      rsa.importparameters(rsaparams);
      return rsa;
    }
    private int getintegersize(binaryreader binr)
    {
      byte bt = 0;
      byte lowbyte = 0x00;
      byte highbyte = 0x00;
      int count = 0;
      bt = binr.readbyte();
      if (bt != 0x02)
        return 0;
      bt = binr.readbyte();
      if (bt == 0x81)
        count = binr.readbyte();
      else
        if (bt == 0x82)
        {
          highbyte = binr.readbyte();
          lowbyte = binr.readbyte();
          byte[] modint = { lowbyte, highbyte, 0x00, 0x00 };
          count = bitconverter.toint32(modint, 0);
        }
        else
        {
          count = bt;
        }
      while (binr.readbyte() == 0x00)
      {
        count -= 1;
      }
      binr.basestream.seek(-1, seekorigin.current);
      return count;
    }
}

附：jsencrypt.min.js点击此处。

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更多关于jquery相关内容感兴趣的读者可查看本站专题：《jquery常用插件及用法总结》、《jquery扩展技巧总结》、《jquery切换特效与技巧总结》、《jquery遍历算法与技巧总结》、《jquery常见经典特效汇总》、《jquery动画与特效用法总结》及《jquery选择器用法总结》

希望本文所述对大家jquery程序设计有所帮助。

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