在文件中找到了一些神秘的Java脚本，需要解密的帮助

Question

我正在尝试通过理解为一个我正在从事的微型项目找到的脚本来工作，遇到了一些我完全不知道的线。顶部仅带有“ md5 util”的注释，但不知道这是哪种“ util”。

我了解md5，它用于散列，但是我不知道这在代码中应该做什么。它是从您提供的对象生成md5哈希的函数吗？

! function () {
        "use strict";

        function t(t) {
            if (t) d[0] = d[16] = d[1] = d[2] = d[3] = d[4] = d[5] = d[6] = d[7] = d[8] = d[9] = d[10] = d[11] = d[12] = d[13] = d[14] = d[15] = 0, this.blocks = d, this.buffer8 = l;
            else if (a) {
                var r = new ArrayBuffer(68);
                this.buffer8 = new Uint8Array(r), this.blocks = new Uint32Array(r)
            } else this.blocks = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
            this.h0 = this.h1 = this.h2 = this.h3 = this.start = this.bytes = this.hBytes = 0, this.finalized = this.hashed = !1, this.first = !0
        }
        var r = "input is invalid type",
            e = "object" == typeof window,
            i = e ? window : {};
        i.JS_MD5_NO_WINDOW && (e = !1);
        var s = !e && "object" == typeof self,
            h = !i.JS_MD5_NO_NODE_JS && "object" == typeof process && process.versions && process.versions.node;
        h ? i = global : s && (i = self);
        var f = !i.JS_MD5_NO_COMMON_JS && "object" == typeof module && module.exports,
            o = "function" == typeof define && define.amd,
            a = !i.JS_MD5_NO_ARRAY_BUFFER && "undefined" != typeof ArrayBuffer,
            n = "0123456789abcdef".split(""),
            u = [128, 32768, 8388608, -2147483648],
            y = [0, 8, 16, 24],
            c = ["hex", "array", "digest", "buffer", "arrayBuffer", "base64"],
            p = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/".split(""),
            d = [],
            l;
        if (a) {
            var A = new ArrayBuffer(68);
            l = new Uint8Array(A), d = new Uint32Array(A)
        } !i.JS_MD5_NO_NODE_JS && Array.isArray || (Array.isArray = function (t) {
            return "[object Array]" === Object.prototype.toString.call(t)
        }), !a || !i.JS_MD5_NO_ARRAY_BUFFER_IS_VIEW && ArrayBuffer.isView || (ArrayBuffer.isView = function (t) {
            return "object" == typeof t && t.buffer && t.buffer.constructor === ArrayBuffer
        });
        var b = function (r) {
            return function (e) {
                return new t(!0).update(e)[r]()
            }
        },
            v = function () {
                var r = b("hex");
                h && (r = w(r)), r.create = function () {
                    return new t
                }, r.update = function (t) {
                    return r.create().update(t)
                };
                for (var e = 0; e < c.length; ++e) {
                    var i = c[e];
                    r[i] = b(i)
                }
                return r
            },
            w = function (t) {
                var e = eval("require('crypto')"),
                    i = eval("require('buffer').Buffer"),
                    s = function (s) {
                        if ("string" == typeof s) return e.createHash("md5").update(s, "utf8").digest("hex");
                        if (null === s || void 0 === s) throw r;
                        return s.constructor === ArrayBuffer && (s = new Uint8Array(s)), Array.isArray(s) || ArrayBuffer.isView(s) || s.constructor === i ? e.createHash("md5").update(new i(s)).digest("hex") : t(s)
                    };
                return s
            };
        t.prototype.update = function (t) {
            if (!this.finalized) {
                var e, i = typeof t;
                if ("string" !== i) {
                    if ("object" !== i) throw r;
                    if (null === t) throw r;
                    if (a && t.constructor === ArrayBuffer) t = new Uint8Array(t);
                    else if (!(Array.isArray(t) || a && ArrayBuffer.isView(t))) throw r;
                    e = !0
                }
                for (var s, h, f = 0, o = t.length, n = this.blocks, u = this.buffer8; f < o;) {
                    if (this.hashed && (this.hashed = !1, n[0] = n[16], n[16] = n[1] = n[2] = n[3] = n[4] = n[5] = n[6] = n[7] = n[8] = n[9] = n[10] = n[11] = n[12] = n[13] = n[14] = n[15] = 0), e)
                        if (a)
                            for (h = this.start; f < o && h < 64; ++f) u[h++] = t[f];
                        else
                            for (h = this.start; f < o && h < 64; ++f) n[h >> 2] |= t[f] << y[3 & h++];
                    else if (a)
                        for (h = this.start; f < o && h < 64; ++f)(s = t.charCodeAt(f)) < 128 ? u[h++] = s : s < 2048 ? (u[h++] = 192 | s >> 6, u[h++] = 128 | 63 & s) : s < 55296 || s >= 57344 ? (u[h++] = 224 | s >> 12, u[h++] = 128 | s >> 6 & 63, u[h++] = 128 | 63 & s) : (s = 65536 + ((1023 & s) << 10 | 1023 & t.charCodeAt(++f)), u[h++] = 240 | s >> 18, u[h++] = 128 | s >> 12 & 63, u[h++] = 128 | s >> 6 & 63, u[h++] = 128 | 63 & s);
                    else
                        for (h = this.start; f < o && h < 64; ++f)(s = t.charCodeAt(f)) < 128 ? n[h >> 2] |= s << y[3 & h++] : s < 2048 ? (n[h >> 2] |= (192 | s >> 6) << y[3 & h++], n[h >> 2] |= (128 | 63 & s) << y[3 & h++]) : s < 55296 || s >= 57344 ? (n[h >> 2] |= (224 | s >> 12) << y[3 & h++], n[h >> 2] |= (128 | s >> 6 & 63) << y[3 & h++], n[h >> 2] |= (128 | 63 & s) << y[3 & h++]) : (s = 65536 + ((1023 & s) << 10 | 1023 & t.charCodeAt(++f)), n[h >> 2] |= (240 | s >> 18) << y[3 & h++], n[h >> 2] |= (128 | s >> 12 & 63) << y[3 & h++], n[h >> 2] |= (128 | s >> 6 & 63) << y[3 & h++], n[h >> 2] |= (128 | 63 & s) << y[3 & h++]);
                    this.lastByteIndex = h, this.bytes += h - this.start, h >= 64 ? (this.start = h - 64, this.hash(), this.hashed = !0) : this.start = h
                }
                return this.bytes > 4294967295 && (this.hBytes += this.bytes / 4294967296 << 0, this.bytes = this.bytes % 4294967296), this
            }
        }, t.prototype.finalize = function () {
            if (!this.finalized) {
                this.finalized = !0;
                var t = this.blocks,
                    r = this.lastByteIndex;
                t[r >> 2] |= u[3 & r], r >= 56 && (this.hashed || this.hash(), t[0] = t[16], t[16] = t[1] = t[2] = t[3] = t[4] = t[5] = t[6] = t[7] = t[8] = t[9] = t[10] = t[11] = t[12] = t[13] = t[14] = t[15] = 0), t[14] = this.bytes << 3, t[15] = this.hBytes << 3 | this.bytes >>> 29, this.hash()
            }
        }, t.prototype.hash = function () {
            var t, r, e, i, s, h, f = this.blocks;
            this.first ? r = ((r = ((t = ((t = f[0] - 680876937) << 7 | t >>> 25) - 271733879 << 0) ^ (e = ((e = (-271733879 ^ (i = ((i = (-1732584194 ^ 2004318071 & t) + f[1] - 117830708) << 12 | i >>> 20) + t << 0) & (-271733879 ^ t)) + f[2] - 1126478375) << 17 | e >>> 15) + i << 0) & (i ^ t)) + f[3] - 1316259209) << 22 | r >>> 10) + e << 0 : (t = this.h0, r = this.h1, e = this.h2, r = ((r += ((t = ((t += ((i = this.h3) ^ r & (e ^ i)) + f[0] - 680876936) << 7 | t >>> 25) + r << 0) ^ (e = ((e += (r ^ (i = ((i += (e ^ t & (r ^ e)) + f[1] - 389564586) << 12 | i >>> 20) + t << 0) & (t ^ r)) + f[2] + 606105819) << 17 | e >>> 15) + i << 0) & (i ^ t)) + f[3] - 1044525330) << 22 | r >>> 10) + e << 0), r = ((r += ((t = ((t += (i ^ r & (e ^ i)) + f[4] - 176418897) << 7 | t >>> 25) + r << 0) ^ (e = ((e += (r ^ (i = ((i += (e ^ t & (r ^ e)) + f[5] + 1200080426) << 12 | i >>> 20) + t << 0) & (t ^ r)) + f[6] - 1473231341) << 17 | e >>> 15) + i << 0) & (i ^ t)) + f[7] - 45705983) << 22 | r >>> 10) + e << 0, r = ((r += ((t = ((t += (i ^ r & (e ^ i)) + f[8] + 1770035416) << 7 | t >>> 25) + r << 0) ^ (e = ((e += (r ^ (i = ((i += (e ^ t & (r ^ e)) + f[9] - 1958414417) << 12 | i >>> 20) + t << 0) & (t ^ r)) + f[10] - 42063) << 17 | e >>> 15) + i << 0) & (i ^ t)) + f[11] - 1990404162) << 22 | r >>> 10) + e << 0, r = ((r += ((t = ((t += (i ^ r & (e ^ i)) + f[12] + 1804603682) << 7 | t >>> 25) + r << 0) ^ (e = ((e += (r ^ (i = ((i += (e ^ t & (r ^ e)) + f[13] - 40341101) << 12 | i >>> 20) + t << 0) & (t ^ r)) + f[14] - 1502002290) << 17 | e >>> 15) + i << 0) & (i ^ t)) + f[15] + 1236535329) << 22 | r >>> 10) + e << 0, r = ((r += ((i = ((i += (r ^ e & ((t = ((t += (e ^ i & (r ^ e)) + f[1] - 165796510) << 5 | t >>> 27) + r << 0) ^ r)) + f[6] - 1069501632) << 9 | i >>> 23) + t << 0) ^ t & ((e = ((e += (t ^ r & (i ^ t)) + f[11] + 643717713) << 14 | e >>> 18) + i << 0) ^ i)) + f[0] - 373897302) << 20 | r >>> 12) + e << 0, r = ((r += ((i = ((i += (r ^ e & ((t = ((t += (e ^ i & (r ^ e)) + f[5] - 701558691) << 5 | t >>> 27) + r << 0) ^ r)) + f[10] + 38016083) << 9 | i >>> 23) + t << 0) ^ t & ((e = ((e += (t ^ r & (i ^ t)) + f[15] - 660478335) << 14 | e >>> 18) + i << 0) ^ i)) + f[4] - 405537848) << 20 | r >>> 12) + e << 0, r = ((r += ((i = ((i += (r ^ e & ((t = ((t += (e ^ i & (r ^ e)) + f[9] + 568446438) << 5 | t >>> 27) + r << 0) ^ r)) + f[14] - 1019803690) << 9 | i >>> 23) + t << 0) ^ t & ((e = ((e += (t ^ r & (i ^ t)) + f[3] - 187363961) << 14 | e >>> 18) + i << 0) ^ i)) + f[8] + 1163531501) << 20 | r >>> 12) + e << 0, r = ((r += ((i = ((i += (r ^ e & ((t = ((t += (e ^ i & (r ^ e)) + f[13] - 1444681467) << 5 | t >>> 27) + r << 0) ^ r)) + f[2] - 51403784) << 9 | i >>> 23) + t << 0) ^ t & ((e = ((e += (t ^ r & (i ^ t)) + f[7] + 1735328473) << 14 | e >>> 18) + i << 0) ^ i)) + f[12] - 1926607734) << 20 | r >>> 12) + e << 0, r = ((r += ((h = (i = ((i += ((s = r ^ e) ^ (t = ((t += (s ^ i) + f[5] - 378558) << 4 | t >>> 28) + r << 0)) + f[8] - 2022574463) << 11 | i >>> 21) + t << 0) ^ t) ^ (e = ((e += (h ^ r) + f[11] + 1839030562) << 16 | e >>> 16) + i << 0)) + f[14] - 35309556) << 23 | r >>> 9) + e << 0, r = ((r += ((h = (i = ((i += ((s = r ^ e) ^ (t = ((t += (s ^ i) + f[1] - 1530992060) << 4 | t >>> 28) + r << 0)) + f[4] + 1272893353) << 11 | i >>> 21) + t << 0) ^ t) ^ (e = ((e += (h ^ r) + f[7] - 155497632) << 16 | e >>> 16) + i << 0)) + f[10] - 1094730640) << 23 | r >>> 9) + e << 0, r = ((r += ((h = (i = ((i += ((s = r ^ e) ^ (t = ((t += (s ^ i) + f[13] + 681279174) << 4 | t >>> 28) + r << 0)) + f[0] - 358537222) << 11 | i >>> 21) + t << 0) ^ t) ^ (e = ((e += (h ^ r) + f[3] - 722521979) << 16 | e >>> 16) + i << 0)) + f[6] + 76029189) << 23 | r >>> 9) + e << 0, r = ((r += ((h = (i = ((i += ((s = r ^ e) ^ (t = ((t += (s ^ i) + f[9] - 640364487) << 4 | t >>> 28) + r << 0)) + f[12] - 421815835) << 11 | i >>> 21) + t << 0) ^ t) ^ (e = ((e += (h ^ r) + f[15] + 530742520) << 16 | e >>> 16) + i << 0)) + f[2] - 995338651) << 23 | r >>> 9) + e << 0, r = ((r += ((i = ((i += (r ^ ((t = ((t += (e ^ (r | ~i)) + f[0] - 198630844) << 6 | t >>> 26) + r << 0) | ~e)) + f[7] + 1126891415) << 10 | i >>> 22) + t << 0) ^ ((e = ((e += (t ^ (i | ~r)) + f[14] - 1416354905) << 15 | e >>> 17) + i << 0) | ~t)) + f[5] - 57434055) << 21 | r >>> 11) + e << 0, r = ((r += ((i = ((i += (r ^ ((t = ((t += (e ^ (r | ~i)) + f[12] + 1700485571) << 6 | t >>> 26) + r << 0) | ~e)) + f[3] - 1894986606) << 10 | i >>> 22) + t << 0) ^ ((e = ((e += (t ^ (i | ~r)) + f[10] - 1051523) << 15 | e >>> 17) + i << 0) | ~t)) + f[1] - 2054922799) << 21 | r >>> 11) + e << 0, r = ((r += ((i = ((i += (r ^ ((t = ((t += (e ^ (r | ~i)) + f[8] + 1873313359) << 6 | t >>> 26) + r << 0) | ~e)) + f[15] - 30611744) << 10 | i >>> 22) + t << 0) ^ ((e = ((e += (t ^ (i | ~r)) + f[6] - 1560198380) << 15 | e >>> 17) + i << 0) | ~t)) + f[13] + 1309151649) << 21 | r >>> 11) + e << 0, r = ((r += ((i = ((i += (r ^ ((t = ((t += (e ^ (r | ~i)) + f[4] - 145523070) << 6 | t >>> 26) + r << 0) | ~e)) + f[11] - 1120210379) << 10 | i >>> 22) + t << 0) ^ ((e = ((e += (t ^ (i | ~r)) + f[2] + 718787259) << 15 | e >>> 17) + i << 0) | ~t)) + f[9] - 343485551) << 21 | r >>> 11) + e << 0, this.first ? (this.h0 = t + 1732584193 << 0, this.h1 = r - 271733879 << 0, this.h2 = e - 1732584194 << 0, this.h3 = i + 271733878 << 0, this.first = !1) : (this.h0 = this.h0 + t << 0, this.h1 = this.h1 + r << 0, this.h2 = this.h2 + e << 0, this.h3 = this.h3 + i << 0)
        }, t.prototype.hex = function () {
            this.finalize();
            var t = this.h0,
                r = this.h1,
                e = this.h2,
                i = this.h3;
            return n[t >> 4 & 15] + n[15 & t] + n[t >> 12 & 15] + n[t >> 8 & 15] + n[t >> 20 & 15] + n[t >> 16 & 15] + n[t >> 28 & 15] + n[t >> 24 & 15] + n[r >> 4 & 15] + n[15 & r] + n[r >> 12 & 15] + n[r >> 8 & 15] + n[r >> 20 & 15] + n[r >> 16 & 15] + n[r >> 28 & 15] + n[r >> 24 & 15] + n[e >> 4 & 15] + n[15 & e] + n[e >> 12 & 15] + n[e >> 8 & 15] + n[e >> 20 & 15] + n[e >> 16 & 15] + n[e >> 28 & 15] + n[e >> 24 & 15] + n[i >> 4 & 15] + n[15 & i] + n[i >> 12 & 15] + n[i >> 8 & 15] + n[i >> 20 & 15] + n[i >> 16 & 15] + n[i >> 28 & 15] + n[i >> 24 & 15]
        }, t.prototype.toString = t.prototype.hex, t.prototype.digest = function () {
            this.finalize();
            var t = this.h0,
                r = this.h1,
                e = this.h2,
                i = this.h3;
            return [255 & t, t >> 8 & 255, t >> 16 & 255, t >> 24 & 255, 255 & r, r >> 8 & 255, r >> 16 & 255, r >> 24 & 255, 255 & e, e >> 8 & 255, e >> 16 & 255, e >> 24 & 255, 255 & i, i >> 8 & 255, i >> 16 & 255, i >> 24 & 255]
        }, t.prototype.array = t.prototype.digest, t.prototype.arrayBuffer = function () {
            this.finalize();
            var t = new ArrayBuffer(16),
                r = new Uint32Array(t);
            return r[0] = this.h0, r[1] = this.h1, r[2] = this.h2, r[3] = this.h3, t
        }, t.prototype.buffer = t.prototype.arrayBuffer, t.prototype.base64 = function () {
            for (var t, r, e, i = "", s = this.array(), h = 0; h < 15;) t = s[h++], r = s[h++], e = s[h++], i += p[t >>> 2] + p[63 & (t << 4 | r >>> 4)] + p[63 & (r << 2 | e >>> 6)] + p[63 & e];
            return t = s[h], i += p[t >>> 2] + p[t << 4 & 63] + "=="
        };
        var _ = v();
        f ? module.exports = _ : (i.md5 = _, o && define(function () {
            return _
        }))
    }();
请帮助：（

我正在尝试通过理解为一个我正在从事的微型项目找到的脚本来工作，遇到了一些我完全不知道的线。顶部仅注释为'md5 ...

Answer 1

正如所指出的那样，它是一个缩小的库。