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// md5下载：https://raw.githubusercontent.com/emn178/js-md5/master/src/md5.js let Base64 = { _keyStr: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=", encode: function(e) { var t = ""; var n, r, i, s, o, u, a; var f = 0; e = Base64._utf8_encode(e); while (f > 2; o = (n & 3) 4; u = (r & 15) 6; a = i & 63; if (isNaN(r)) { u = a = 64 } else if (isNaN(i)) { a = 64 } t = t + this._keyStr.charAt(s) + this._keyStr.charAt(o) + this._keyStr.charAt(u) + this._keyStr.charAt(a) } return t }, decode: function(e) { var t = ""; var n, r, i; var s, o, u, a; var f = 0; e = e.replace(/[^A-Za-z0-9+/=]/g, ""); while (f > 6 & 63 | 128); t += String.fromCharCode(r & 63 | 128) } } return t }, _utf8_decode: function(e) { var t = ""; var n = 0; var r = c1 = c2 = 0; while (n |