vue axios请求加RSA 公钥加密 私钥解密

Posted 2021-03-17 Gherardo

项目上线后，为了安全，会对请求加密，防止看到请求参数。现在直接看代码吧。这里以vue为例。

在main.js中的请求拦截器中

 

然后主要看加密算法

var b64map = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
var b64pad = "=";
var BI_RM = "0123456789abcdefghijklmnopqrstuvwxyz";

function hex2b64(h) {
  var i;
  var c;
  var ret = "";
  for (i = 0; i + 3 <= h.length; i += 3) {
    c = parseInt(h.substring(i, i + 3), 16);
    ret += b64map.charAt(c >> 6) + b64map.charAt(c & 63);
  }
  if (i + 1 == h.length) {
    c = parseInt(h.substring(i, i + 1), 16);
    ret += b64map.charAt(c << 2);
  }
  else if (i + 2 == h.length) {
    c = parseInt(h.substring(i, i + 2), 16);
    ret += b64map.charAt(c >> 2) + b64map.charAt((c & 3) << 4);
  }
  while ((ret.length & 3) > 0) {
    ret += b64pad;
  }
  return ret;
}

//长字符串加密
JSEncrypt.prototype.encryptLong = function (string) {
  var k = this.getKey();
  //var MAX_ENCRYPT_BLOCK = (((k.n.bitLength() + 7) >> 3) - 11);
  var MAX_ENCRYPT_BLOCK = 117;
  try {
    var lt = "";
    var ct = "";
    //RSA每次加密117bytes，需要辅助方法判断字符串截取位置
    //1.获取字符串截取点
    var bytes = new Array();
    bytes.push(0);
    var byteNo = 0;
    var len, c;
    len = string.length;
    var temp = 0;
    for (var i = 0; i < len; i++) {
      c = string.charCodeAt(i);
      if (c >= 0x010000 && c <= 0x10FFFF) {
        byteNo += 4;
      } else if (c >= 0x000800 && c <= 0x00FFFF) {
        byteNo += 3;
      } else if (c >= 0x000080 && c <= 0x0007FF) {
        byteNo += 2;
      } else {
        byteNo += 1;
      }
      if ((byteNo % MAX_ENCRYPT_BLOCK) >= 114 || (byteNo % MAX_ENCRYPT_BLOCK) == 0) {
        if (byteNo - temp >= 114) {
          bytes.push(i);
          temp = byteNo;
        }
      }
    }
    //2.截取字符串并分段加密
    if (bytes.length > 1) {
      for (var i = 0; i < bytes.length - 1; i++) {
        var str;
        if (i == 0) {
          str = string.substring(0, bytes[i + 1] + 1);
        } else {
          str = string.substring(bytes[i] + 1, bytes[i + 1] + 1);
        }
        var t1 = k.encrypt(str);
        ct += t1;
      }
      ;
      if (bytes[bytes.length - 1] != string.length - 1) {
        var lastStr = string.substring(bytes[bytes.length - 1] + 1);
        ct += k.encrypt(lastStr);
      }
      return hex2b64(ct);
    }
    var t = k.encrypt(string);
    var y = hex2b64(t);
    return y;
  } catch (ex) {
    return false;
  }
};

下面请看network 加密后的参数

 

 因为私钥解密是java 获取到加密的数据后去解密的，这里就暂时先不写了！！！