[JS逆向] 校友邦请求参数加密

function a(e, n) {
    var c = (65535 & e) + (65535 & n);
    return (e >> 16) + (n >> 16) + (c >> 16) << 16 | 65535 & c
}

function t(e, n, c, t, i, o) {
    return a((u = a(a(n, e), a(t, o))) << (r = i) | u >>> 32 - r, c);
    var u, r
}

function i(e, n, c, a, i, o, u) {
    return t(n & c | ~n & a, e, n, i, o, u)
}

function o(e, n, c, a, i, o, u) {
    return t(n & a | c & ~a, e, n, i, o, u)
}

function u(e, n, c, a, i, o, u) {
    return t(n ^ c ^ a, e, n, i, o, u)
}

function r(e, n, c, a, i, o, u) {
    return t(c ^ (n | ~a), e, n, i, o, u)
}

function d(e) {
    for (var n = 1732584193, c = -271733879, t = -1732584194, d = 271733878, h = 0; h < e.length; h += 16) {
        var s = n,
            l = c,
            b = t,
            k = d;
        c = r(c = r(c = r(c = r(c = u(c = u(c = u(c = u(c = o(c = o(c = o(c = o(c = i(c = i(c = i(c = i(c, t = i(t, d = i(d, n = i(n, c, t, d, e[h + 0], 7, -680876936), c, t, e[h + 1], 12, -389564586), n, c, e[h + 2], 17, 606105819), d, n, e[h + 3], 22, -1044525330), t = i(t, d = i(d, n = i(n, c, t, d, e[h + 4], 7, -176418897), c, t, e[h + 5], 12, 1200080426), n, c, e[h + 6], 17, -1473231341), d, n, e[h + 7], 22, -45705983), t = i(t, d = i(d, n = i(n, c, t, d, e[h + 8], 7, 1770035416), c, t, e[h + 9], 12, -1958414417), n, c, e[h + 10], 17, -42063), d, n, e[h + 11], 22, -1990404162), t = i(t, d = i(d, n = i(n, c, t, d, e[h + 12], 7, 1804603682), c, t, e[h + 13], 12, -40341101), n, c, e[h + 14], 17, -1502002290), d, n, e[h + 15], 22, 1236535329), t = o(t, d = o(d, n = o(n, c, t, d, e[h + 1], 5, -165796510), c, t, e[h + 6], 9, -1069501632), n, c, e[h + 11], 14, 643717713), d, n, e[h + 0], 20, -373897302), t = o(t, d = o(d, n = o(n, c, t, d, e[h + 5], 5, -701558691), c, t, e[h + 10], 9, 38016083), n, c, e[h + 15], 14, -660478335), d, n, e[h + 4], 20, -405537848), t = o(t, d = o(d, n = o(n, c, t, d, e[h + 9], 5, 568446438), c, t, e[h + 14], 9, -1019803690), n, c, e[h + 3], 14, -187363961), d, n, e[h + 8], 20, 1163531501), t = o(t, d = o(d, n = o(n, c, t, d, e[h + 13], 5, -1444681467), c, t, e[h + 2], 9, -51403784), n, c, e[h + 7], 14, 1735328473), d, n, e[h + 12], 20, -1926607734), t = u(t, d = u(d, n = u(n, c, t, d, e[h + 5], 4, -378558), c, t, e[h + 8], 11, -2022574463), n, c, e[h + 11], 16, 1839030562), d, n, e[h + 14], 23, -35309556), t = u(t, d = u(d, n = u(n, c, t, d, e[h + 1], 4, -1530992060), c, t, e[h + 4], 11, 1272893353), n, c, e[h + 7], 16, -155497632), d, n, e[h + 10], 23, -1094730640), t = u(t, d = u(d, n = u(n, c, t, d, e[h + 13], 4, 681279174), c, t, e[h + 0], 11, -358537222), n, c, e[h + 3], 16, -722521979), d, n, e[h + 6], 23, 76029189), t = u(t, d = u(d, n = u(n, c, t, d, e[h + 9], 4, -640364487), c, t, e[h + 12], 11, -421815835), n, c, e[h + 15], 16, 530742520), d, n, e[h + 2], 23, -995338651), t = r(t, d = r(d, n = r(n, c, t, d, e[h + 0], 6, -198630844), c, t, e[h + 7], 10, 1126891415), n, c, e[h + 14], 15, -1416354905), d, n, e[h + 5], 21, -57434055), t = r(t, d = r(d, n = r(n, c, t, d, e[h + 12], 6, 1700485571), c, t, e[h + 3], 10, -1894986606), n, c, e[h + 10], 15, -1051523), d, n, e[h + 1], 21, -2054922799), t = r(t, d = r(d, n = r(n, c, t, d, e[h + 8], 6, 1873313359), c, t, e[h + 15], 10, -30611744), n, c, e[h + 6], 15, -1560198380), d, n, e[h + 13], 21, 1309151649), t = r(t, d = r(d, n = r(n, c, t, d, e[h + 4], 6, -145523070), c, t, e[h + 11], 10, -1120210379), n, c, e[h + 2], 15, 718787259), d, n, e[h + 9], 21, -343485551),
        n = a(n, s),
        c = a(c, l),
        t = a(t, b),
        d = a(d, k)
    }
    return [n, c, t, d]
}

function h(e) {
    for (var n = "0123456789abcdef", c = "", a = 0; a < 4 * e.length; a++)
    c += n.charAt(e[a >> 2] >> a % 4 * 8 + 4 & 15) + n.charAt(e[a >> 2] >> a % 4 * 8 & 15);
    return c
}
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    c[a] = 0;
    for (a = 0; a < e.length; a++)
    c[a >> 2] |= (255 & e.charCodeAt(a)) << a % 4 * 8;
    return c[a >> 2] |= 128 << a % 4 * 8,
    c[16 * n - 2] = 8 * e.length,
    c
}
var l = {
    hexMD5: function(e) {
        return h(d(s(e)))
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}, b = new RegExp("[`~!@#$%^&*()+=|{}':;',\[\].<>/?~！@#￥%……&*（）——+|{}【】‘；：”“’。，、？]"),
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            c = ["content", "practicePurpose", "practiceContent", "practiceRequirement", "otherRequirement", "practiceDescript", "securityBook", "file", "uploadJson"];
        for (var a in e) {
            var t = e[a] + "";
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        return c
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<!-- www.lanol.cn lan小站 by:Lan   -->
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        a.push(t + "");
        var i = Math.round((new Date).getTime() / 1e3),
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                for (var c, a, t = e.slice(0), i = e.length, o = i - n; i-- > o;)
                c = t[a = Math.floor((i + 1) * Math.random())],
                t[a] = t[i],
                t[i] = c;
                return t.slice(o)
            }(a, 20),
            u = "";
        o.forEach(function(e, n) {
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        var r = function(e) {
            if (null == e) return {};
            for (var n = Object.keys(e).sort(), c = {}, a = 0; a < n.length; a++)
            c[n[a]] = e[n[a]];
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            d = "";
        for (var h in r) - 1 != k().indexOf(h) || b.test(r[h]) || null != r[h] && "" !== r[h] && '""' !== r[h] && (d += r[h]);
        return d += i,
        d = (d = (d = (d = (d = (d = (d = (d = (d += u).replace(/\s+/g, "")).replace(/\n+/g, "")).replace(/\r+/g, "")).replace(/</g, "")).replace(/>/g, "")).replace(/&/g, "")).replace(/-/g, "")).replace(/\uD83C[\uDF00-\uDFFF]|\uD83D[\uDC00-\uDE4F]/g, ""),
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            md5: d = l.hexMD5(d),
            tstr: i,
            iArrStr: o && 0 < o.length ? o.join("_") : ""
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