js安全介绍

秘钥加密

通过iVbwQXxFy中前 4 个字符，产生加密串VwbiQVbbbQVbwwQVbVVQVwiiQVwbiQbwwQVwiVQwibQwVwQwbVQwVVQwVVQwibQwbiQwVwQwVVQwibQwVVQwbiQwbVQwViQwiwQwViQwbbQwbVQwVbQwVbQwwbQbiwQVwbiQVbibQVbiwQVbViQwViQVbVVQwVVQwbbQbiwQ。

加密算法，输出结果如上：

解码算法，输出结果为：wabc3d49

function changeFunc(d, e, f) {
  var array = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ+/'.split('')
  var h = array.slice(0, e)
  var i = array.slice(0, f)
  var j = d['split']('')
    ['reverse']()
    ['reduce'](function (a, b, c) {
      if (h['indexOf'](b) !== -1) return (a += h['indexOf'](b) * Math['pow'](e, c))
    }, 0)
  var k = ''
  while (j > 0) {
    k = i[j % f] + k
    j = (j - (j % f)) / f
  }
  return k || '0'
}
eval(
  (function (h, u, n, t, e, r) {
    r = ''
    for (var i = 0, len = h.length; i < len; i++) {
      var s = ''
      while (h[i] !== n[e]) {
        s += h[i]
        i++
      }
      for (var j = 0; j < n.length; j++) s = s.replace(new RegExp(n[j], 'g'), j)
      r += String.fromCharCode(changeFunc(s, e, 10) - t)
    }
    return decodeURIComponent(escape(r))
  })(
    'VwbiQVbbbQVbwwQVbVVQVwiiQVwbiQbwwQVwiVQwibQwVwQwbVQwVVQwVVQwibQwbiQwVwQwVVQwibQwVVQwbiQwbVQwViQwiwQwViQwbbQwbVQwVbQwVbQwwbQbiwQVwbiQVbibQVbiwQVbViQwViQVbVVQwVVQwbbQbiwQ',
    39,
    'iVbwQXxFy',
    1,
    4,
    3
  )
)

加密算法二

https://www.movable-type.co.uk/scripts/tea.html

在线加密

https://www.sojson.com/javascriptobfuscator.html