js与php中sha1加密 通过postman请求动态参数 时间戳

@(js使用sha1加密示例（与php sha1对等）)

问题出现过程：

开发过程中，有个接口使用了php 中 sha1加密的方式，我在使用postman请求的时候，需要用post方式传一个动态的时间戳（当前时间）[timestamp]，随机数[random]，密钥[secretKey]给这个接口，验证通过才能返回接口的数据。所以postman传实时参数和sha1加密就需要前后端对的上才行。后端鉴权代码如下。

if (!empty($secretKey) && time() - $timstamp < 60 && sha1($timstamp . $random . $secretKey) === $signature) {
   return $next($request);
}
return json_encode(['code' => -1, 'message' => '鉴权失败'], JSON_UNESCAPED_UNICODE);

Postman传动态参数

在postman中Pre-request Script 一栏，可以自定义js脚本。然后在params中使用{{ }}引入变量值。

• 引入变量值
  
• 写js脚本定义变量
  
• js代码如下：

// 生成时间戳
// postman.setGlobalVariable("timestamp",Math.round(new Date().getTime()));
postman.setGlobalVariable("timestamp",'1581342338072');
let timestamp = postman.getGlobalVariable('timestamp');

// 定义random
postman.setGlobalVariable('random',14345);
let random = postman.getGlobalVariable('random');

// 定义caller
postman.setGlobalVariable('caller','antool');
let caller = postman.getGlobalVariable('caller');

// 设置secretKey
postman.setGlobalVariable('secretKey','d20a3a0bc6e9d807452c956faa360f04');
let secretKey = postman.getGlobalVariable('secretKey');

php sha1与js中CryptoJS.SHA1值不一样的问题

• js函数代码

function encodeUTF8(s) {
  var i, r = [], c, x;
  for (i = 0; i < s.length; i++)
    if ((c = s.charCodeAt(i)) < 0x80) r.push(c);
    else if (c < 0x800) r.push(0xC0 + (c >> 6 & 0x1F), 0x80 + (c & 0x3F));
    else {
      if ((x = c ^ 0xD800) >> 10 == 0) //对四字节UTF-16转换为Unicode
        c = (x << 10) + (s.charCodeAt(++i) ^ 0xDC00) + 0x10000,
          r.push(0xF0 + (c >> 18 & 0x7), 0x80 + (c >> 12 & 0x3F));
      else r.push(0xE0 + (c >> 12 & 0xF));
      r.push(0x80 + (c >> 6 & 0x3F), 0x80 + (c & 0x3F));
    };
  return r;
}

// 字符串加密成 hex 字符串
function sha1(s) {
  var data = new Uint8Array(encodeUTF8(s))
  var i, j, t;
  var l = ((data.length + 8) >>> 6 << 4) + 16, s = new Uint8Array(l << 2);
  s.set(new Uint8Array(data.buffer)), s = new Uint32Array(s.buffer);
  for (t = new DataView(s.buffer), i = 0; i < l; i++)s[i] = t.getUint32(i << 2);
  s[data.length >> 2] |= 0x80 << (24 - (data.length & 3) * 8);
  s[l - 1] = data.length << 3;
  var w = [], f = [
    function () { return m[1] & m[2] | ~m[1] & m[3]; },
    function () { return m[1] ^ m[2] ^ m[3]; },
    function () { return m[1] & m[2] | m[1] & m[3] | m[2] & m[3]; },
    function () { return m[1] ^ m[2] ^ m[3]; }
  ], rol = function (n, c) { return n << c | n >>> (32 - c); },
    k = [1518500249, 1859775393, -1894007588, -899497514],
    m = [1732584193, -271733879, null, null, -1009589776];
  m[2] = ~m[0], m[3] = ~m[1];
  for (i = 0; i < s.length; i += 16) {
    var o = m.slice(0);
    for (j = 0; j < 80; j++)
      w[j] = j < 16 ? s[i + j] : rol(w[j - 3] ^ w[j - 8] ^ w[j - 14] ^ w[j - 16], 1),
        t = rol(m[0], 5) + f[j / 20 | 0]() + m[4] + w[j] + k[j / 20 | 0] | 0,
        m[1] = rol(m[1], 30), m.pop(), m.unshift(t);
    for (j = 0; j < 5; j++)m[j] = m[j] + o[j] | 0;
  };
  t = new DataView(new Uint32Array(m).buffer);
  for (var i = 0; i < 5; i++)m[i] = t.getUint32(i << 2);

  var hex = Array.prototype.map.call(new Uint8Array(new Uint32Array(m).buffer), function (e) {
    return (e < 16 ? "0" : "") + e.toString(16);
  }).join("");
  return hex;
}

• 调用

var sha = sha1("1581342338072"+'14345'+'d20a3a0bc6e9d807452c956faa360f04');
   alert(sha);

测试结果

• js结果
  
• php 结果
  
• postman返回结果，成功拿到数据