Python逆向爬虫入门教程: 网易云音乐加密参数 params & encSecKey 逆向解析

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数据来源分析💥

网站链接: aHR0cHM6Ly9tdXNpYy4xNjMuY29tLyMvZGlzY292ZXIvdG9wbGlzdD9pZD0zNzc4Njc4

音乐数据包分析💥

  1. 正常流程抓包分析数据, 找到音频链接

    Python逆向爬虫入门教程: 网易云音乐加密参数 params & encSecKey 逆向解析

     

  2. 找到歌曲信息对应数据包

     

    Python逆向爬虫入门教程: 网易云音乐加密参数 params & encSecKey 逆向解析

     

    Python逆向爬虫入门教程: 网易云音乐加密参数 params & encSecKey 逆向解析

     

    Python逆向爬虫入门教程: 网易云音乐加密参数 params & encSecKey 逆向解析

     

  3. 分析加密参数位置

    Python逆向爬虫入门教程: 网易云音乐加密参数 params & encSecKey 逆向解析

     

    Python逆向爬虫入门教程: 网易云音乐加密参数 params & encSecKey 逆向解析

     

    找到对应的加密位置, 其余就去扣代码即可, 缺什么补什么就行了, 主要是注意一下传入的参数问题, 因为它传入的参数可能有好几个 找到对的那个就行了

js代码💥

var CryptoJS = CryptoJS || function(u, p) {
    var d = {}
      , l = d.lib = {}
      , s = function() {}
      , t = l.Base = {
        extend: function(a) {
            s.prototype = this;
            var c = new s;
            a && c.mixIn(a);
            c.hasOwnProperty("init") || (c.init = function() {
                c.$super.init.apply(this, arguments)
            }
            );
            c.init.prototype = c;
            c.$super = this;
            return c
        },
        create: function() {
            var a = this.extend();
            a.init.apply(a, arguments);
            return a
        },
        init: function() {},
        mixIn: function(a) {
            for (var c in a)
                a.hasOwnProperty(c) && (this[c] = a[c]);
            a.hasOwnProperty("toString") && (this.toString = a.toString)
        },
        clone: function() {
            return this.init.prototype.extend(this)
        }
    }
      , r = l.WordArray = t.extend({
        init: function(a, c) {
            a = this.words = a || [];
            this.sigBytes = c != p ? c : 4 * a.length
        },
        toString: function(a) {
            return (a || v).stringify(this)
        },
        concat: function(a) {
            var c = this.words
              , e = a.words
              , j = this.sigBytes;
            a = a.sigBytes;
            this.clamp();
            if (j % 4)
                for (var k = 0; k < a; k++)
                    c[j + k >>> 2] |= (e[k >>> 2] >>> 24 - 8 * (k % 4) & 255) << 24 - 8 * ((j + k) % 4);
            else if (65535 < e.length)
                for (k = 0; k < a; k += 4)
                    c[j + k >>> 2] = e[k >>> 2];
            else
                c.push.apply(c, e);
            this.sigBytes += a;
            return this
        },
        clamp: function() {
            var a = this.words
              , c = this.sigBytes;
            a[c >>> 2] &= 4294967295 << 32 - 8 * (c % 4);
            a.length = u.ceil(c / 4)
        },
        clone: function() {
            var a = t.clone.call(this);
            a.words = this.words.slice(0);
            return a
        },
        random: function(a) {
            for (var c = [], e = 0; e < a; e += 4)
                c.push(4294967296 * u.random() | 0);
            return new r.init(c,a)
        }
    })
      , w = d.enc = {}
      , v = w.Hex = {
        stringify: function(a) {
            var c = a.words;
            a = a.sigBytes;
            for (var e = [], j = 0; j < a; j++) {
                var k = c[j >>> 2] >>> 24 - 8 * (j % 4) & 255;
                e.push((k >>> 4).toString(16));
                e.push((k & 15).toString(16))
            }
            return e.join("")
        },
        parse: function(a) {
            for (var c = a.length, e = [], j = 0; j < c; j += 2)
                e[j >>> 3] |= parseInt(a.substr(j, 2), 16) << 24 - 4 * (j % 8);
            return new r.init(e,c / 2)
        }
    }
      , b = w.Latin1 = {
        stringify: function(a) {
            var c = a.words;
            a = a.sigBytes;
            for (var e = [], j = 0; j < a; j++)
                e.push(String.fromCharCode(c[j >>> 2] >>> 24 - 8 * (j % 4) & 255));
            return e.join("")
        },
        parse: function(a) {
            for (var c = a.length, e = [], j = 0; j < c; j++)
                e[j >>> 2] |= (a.charCodeAt(j) & 255) << 24 - 8 * (j % 4);
            return new r.init(e,c)
        }
    }
      , x = w.Utf8 = {
        stringify: function(a) {
            try {
                return decodeURIComponent(escape(b.stringify(a)))
            } catch (c) {
                throw Error("Malformed UTF-8 data")
            }
        },
        parse: function(a) {
            return b.parse(unescape(encodeURIComponent(a)))
        }
    }
      , q = l.BufferedBlockAlgorithm = t.extend({
        reset: function() {
            this.i4m = new r.init;
            this.yF2x = 0
        },
        BK3x: function(a) {
            "string" == typeof a && (a = x.parse(a));
            this.i4m.concat(a);
            this.yF2x += a.sigBytes
        },
        mI8A: function(a) {
            var c = this.i4m
              , e = c.words
              , j = c.sigBytes
              , k = this.blockSize
              , b = j / (4 * k)
              , b = a ? u.ceil(b) : u.max((b | 0) - this.WB4F, 0);
            a = b * k;
            j = u.min(4 * a, j);
            if (a) {
                for (var q = 0; q < a; q += k)
                    this.tq0x(e, q);
                q = e.splice(0, a);
                c.sigBytes -= j
            }
            return new r.init(q,j)
        },
        clone: function() {
            var a = t.clone.call(this);
            a.i4m = this.i4m.clone();
            return a
        },
        WB4F: 0
    });
    l.Hasher = q.extend({
        cfg: t.extend(),
        init: function(a) {
            this.cfg = this.cfg.extend(a);
            this.reset()
        },
        reset: function() {
            q.reset.call(this);
            this.mj8b()
        },
        update: function(a) {
            this.BK3x(a);
            this.mI8A();
            return this
        },
        finalize: function(a) {
            a && this.BK3x(a);
            return this.os9j()
        },
        blockSize: 16,
        mY8Q: function(a) {
            return function(b, e) {
                return (new a.init(e)).finalize(b)
            }
        },
        yG2x: function(a) {
            return function(b, e) {
                return (new n.HMAC.init(a,e)).finalize(b)
            }
        }
    });
    var n = d.algo = {};
    return d
}(Math);
(function() {
    var u = CryptoJS
      , p = u.lib.WordArray;
    u.enc.Base64 = {
        stringify: function(d) {
            var l = d.words
              , p = d.sigBytes
              , t = this.bD5I;
            d.clamp();
            d = [];
            for (var r = 0; r < p; r += 3)
                for (var w = (l[r >>> 2] >>> 24 - 8 * (r % 4) & 255) << 16 | (l[r + 1 >>> 2] >>> 24 - 8 * ((r + 1) % 4) & 255) << 8 | l[r + 2 >>> 2] >>> 24 - 8 * ((r + 2) % 4) & 255, v = 0; 4 > v && r + .75 * v < p; v++)
                    d.push(t.charAt(w >>> 6 * (3 - v) & 63));
            if (l = t.charAt(64))
                for (; d.length % 4; )
                    d.push(l);
            return d.join("")
        },
        parse: function(d) {
            var l = d.length
              , s = this.bD5I
              , t = s.charAt(64);
            t && (t = d.indexOf(t),
            -1 != t && (l = t));
            for (var t = [], r = 0, w = 0; w < l; w++)
                if (w % 4) {
                    var v = s.indexOf(d.charAt(w - 1)) << 2 * (w % 4)
                      , b = s.indexOf(d.charAt(w)) >>> 6 - 2 * (w % 4);
                    t[r >>> 2] |= (v | b) << 24 - 8 * (r % 4);
                    r++
                }
            return p.create(t, r)
        },
        bD5I: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="
    }
}
)();
(function(u) {
    function p(b, n, a, c, e, j, k) {
        b = b + (n & a | ~n & c) + e + k;
        return (b << j | b >>> 32 - j) + n
    }
    function d(b, n, a, c, e, j, k) {
        b = b + (n & c | a & ~c) + e + k;
        return (b << j | b >>> 32 - j) + n
    }
    function l(b, n, a, c, e, j, k) {
        b = b + (n ^ a ^ c) + e + k;
        return (b << j | b >>> 32 - j) + n
    }
    function s(b, n, a, c, e, j, k) {
        b = b + (a ^ (n | ~c)) + e + k;
        return (b << j | b >>> 32 - j) + n
    }
    for (var t = CryptoJS, r = t.lib, w = r.WordArray, v = r.Hasher, r = t.algo, b = [], x = 0; 64 > x; x++)
        b[x] = 4294967296 * u.abs(u.sin(x + 1)) | 0;
    r = r.MD5 = v.extend({
        mj8b: function() {
            this.cT5Y = new w.init([1732584193, 4023233417, 2562383102, 271733878])
        },
        tq0x: function(q, n) {
            for (var a = 0; 16 > a; a++) {
                var c = n + a
                  , e = q[c];
                q[c] = (e << 8 | e >>> 24) & 16711935 | (e << 24 | e >>> 8) & 4278255360
            }
            var a = this.cT5Y.words
              , c = q[n + 0]
              , e = q[n + 1]
              , j = q[n + 2]
              , k = q[n + 3]
              , z = q[n + 4]
              , r = q[n + 5]
              , t = q[n + 6]
              , w = q[n + 7]
              , v = q[n + 8]
              , A = q[n + 9]
              , B = q[n + 10]
              , C = q[n + 11]
              , u = q[n + 12]
              , D = q[n + 13]
              , E = q[n + 14]
              , x = q[n + 15]
              , f = a[0]
              , m = a[1]
              , g = a[2]
              , h = a[3]
              , f = p(f, m, g, h, c, 7, b[0])
              , h = p(h, f, m, g, e, 12, b[1])
              , g = p(g, h, f, m, j, 17, b[2])
              , m = p(m, g, h, f, k, 22, b[3])
              , f = p(f, m, g, h, z, 7, b[4])
              , h = p(h, f, m, g, r, 12, b[5])
              , g = p(g, h, f, m, t, 17, b[6])
              , m = p(m, g, h, f, w, 22, b[7])
              , f = p(f, m, g, h, v, 7, b[8])
              , h = p(h, f, m, g, A, 12, b[9])
              , g = p(g, h, f, m, B, 17, b[10])
              , m = p(m, g, h, f, C, 22, b[11])
              , f = p(f, m, g, h, u, 7, b[12])
              , h = p(h, f, m, g, D, 12, b[13])
              , g = p(g, h, f, m, E, 17, b[14])
              , m = p(m, g, h, f, x, 22, b[15])
              , f = d(f, m, g, h, e, 5, b[16])
              , h = d(h, f, m, g, t, 9, b[17])
              , g = d(g, h, f, m, C, 14, b[18])
              , m = d(m, g, h, f, c, 20, b[19])
              , f = d(f, m, g, h, r, 5, b[20])
              , h = d(h, f, m, g, B, 9, b[21])
              , g = d(g, h, f, m, x, 14, b[22])
              , m = d(m, g, h, f, z, 20, b[23])
              , f = d(f, m, g, h, A, 5, b[24])
              , h = d(h, f, m, g, E, 9, b[25])
              , g = d(g, h, f, m, k, 14, b[26])
              , m = d(m, g, h, f, v, 20, b[27])
              , f = d(f, m, g, h, D, 5, b[28])
              , h = d(h, f, m, g, j, 9, b[29])
              , g = d(g, h, f, m, w, 14, b[30])
              , m = d(m, g, h, f, u, 20, b[31])
              , f = l(f, m, g, h, r, 4, b[32])
              , h = l(h, f, m, g, v, 11, b[33])
              , g = l(g, h, f, m, C, 16, b[34])
              , m = l(m, g, h, f, E, 23, b[35])
              , f = l(f, m, g, h, e, 4, b[36])
              , h = l(h, f, m, g, z, 11, b[37])
              , g = l(g, h, f, m, w, 16, b[38])
              , m = l(m, g, h, f, B, 23, b[39])
              , f = l(f, m, g, h, D, 4, b[40])
              , h = l(h, f, m, g, c, 11, b[41])
              , g = l(g, h, f, m, k, 16, b[42])
              , m = l(m, g, h, f, t, 23, b[43])
              , f = l(f, m, g, h, A, 4, b[44])
              , h = l(h, f, m, g, u, 11, b[45])
              , g = l(g, h, f, m, x, 16, b[46])
              , m = l(m, g, h, f, j, 23, b[47])
              , f = s(f, m, g, h, c, 6, b[48])
              , h = s(h, f, m, g, w, 10, b[49])
              , g = s(g, h, f, m, E, 15, b[50])
              , m = s(m, g, h, f, r, 21, b[51])
              , f = s(f, m, g, h, u, 6, b[52])
              , h = s(h, f, m, g, k, 10, b[53])
              , g = s(g, h, f, m, B, 15, b[54])
              , m = s(m, g, h, f, e, 21, b[55])
              , f = s(f, m, g, h, v, 6, b[56])
              , h = s(h, f, m, g, x, 10, b[57])
              , g = s(g, h, f, m, t, 15, b[58])
              , m = s(m, g, h, f, D, 21, b[59])
              , f = s(f, m, g, h, z, 6, b[60])
              , h = s(h, f, m, g, C, 10, b[61])
              , g = s(g, h, f, m, j, 15, b[62])
              , m = s(m, g, h, f, A, 21, b[63]);
            a[0] = a[0] + f | 0;
            a[1] = a[1] + m | 0;
            a[2] = a[2] + g | 0;
            a[3] = a[3] + h | 0
        },
        os9j: function() {
            var b = this.i4m
              , n = b.words
              , a = 8 * this.yF2x
              , c = 8 * b.sigBytes;
            n[c >>> 5] |= 128 << 24 - c % 32;
            var e = u.floor(a / 4294967296);
            n[(c + 64 >>> 9 << 4) + 15] = (e << 8 | e >>> 24) & 16711935 | (e << 24 | e >>> 8) & 4278255360;
            n[(c + 64 >>> 9 << 4) + 14] = (a << 8 | a >>> 24) & 16711935 | (a << 24 | a >>> 8) & 4278255360;
            b.sigBytes = 4 * (n.length + 1);
            this.mI8A();
            b = this.cT5Y;
            n = b.words;
            for (a = 0; 4 > a; a++)
                c = n[a],
                n[a] = (c << 8 | c >>> 24) & 16711935 | (c << 24 | c >>> 8) & 4278255360;
            return b
        },
        clone: function() {
            var b = v.clone.call(this);
            b.cT5Y = this.cT5Y.clone();
            return b
        }
    });
    t.MD5 = v.mY8Q(r);
    t.HmacMD5 = v.yG2x(r)
}
)(Math);
(function() {
    var u = CryptoJS
      , p = u.lib
      , d = p.Base
      , l = p.WordArray
      , p = u.algo
      , s = p.EvpKDF = d.extend({
        cfg: d.extend({
            keySize: 4,
            hasher: p.MD5,
            iterations: 1
        }),
        init: function(d) {
            this.cfg = this.cfg.extend(d)
        },
        compute: function(d, r) {
            for (var p = this.cfg, s = p.hasher.create(), b = l.create(), u = b.words, q = p.keySize, p = p.iterations; u.length < q; ) {
                n && s.update(n);
                var n = s.update(d).finalize(r);
                s.reset();
                for (var a = 1; a < p; a++)
                    n = s.finalize(n),
                    s.reset();
                b.concat(n)
            }
            b.sigBytes = 4 * q;
            return b
        }
    });
    u.EvpKDF = function(d, l, p) {
        return s.create(p).compute(d, l)
    }
}
)();
CryptoJS.lib.Cipher || function(u) {
    var p = CryptoJS
      , d = p.lib
      , l = d.Base
      , s = d.WordArray
      , t = d.BufferedBlockAlgorithm
      , r = p.enc.Base64
      , w = p.algo.EvpKDF
      , v = d.Cipher = t.extend({
        cfg: l.extend(),
        createEncryptor: function(e, a) {
            return this.create(this.FT4X, e, a)
        },
        createDecryptor: function(e, a) {
            return this.create(this.brE9v, e, a)
        },
        init: function(e, a, b) {
            this.cfg = this.cfg.extend(b);
            this.WF4J = e;
            this.J5O = a;
            this.reset()
        },
        reset: function() {
            t.reset.call(this);
            this.mj8b()
        },
        process: function(e) {
            this.BK3x(e);
            return this.mI8A()
        },
        finalize: function(e) {
            e && this.BK3x(e);
            return this.os9j()
        },
        keySize: 4,
        ivSize: 4,
        FT4X: 1,
        brE9v: 2,
        mY8Q: function(e) {
            return {
                encrypt: function(b, k, d) {
                    return ("string" == typeof k ? c : a).encrypt(e, b, k, d)
                },
                decrypt: function(b, k, d) {
                    return ("string" == typeof k ? c : a).decrypt(e, b, k, d)
                }
            }
        }
    });
    d.StreamCipher = v.extend({
        os9j: function() {
            return this.mI8A(!0)
        },
        blockSize: 1
    });
    var b = p.mode = {}
      , x = function(e, a, b) {
        var c = this.tA1x;
        c ? this.tA1x = u : c = this.Ff4j;
        for (var d = 0; d < b; d++)
            e[a + d] ^= c[d]
    }
      , q = (d.BlockCipherMode = l.extend({
        createEncryptor: function(e, a) {
            return this.Encryptor.create(e, a)
        },
        createDecryptor: function(e, a) {
            return this.Decryptor.create(e, a)
        },
        init: function(e, a) {
            this.uF1x = e;
            this.tA1x = a
        }
    })).extend();
    q.Encryptor = q.extend({
        processBlock: function(e, a) {
            var b = this.uF1x
              , c = b.blockSize;
            x.call(this, e, a, c);
            b.encryptBlock(e, a);
            this.Ff4j = e.slice(a, a + c)
        }
    });
    q.Decryptor = q.extend({
        processBlock: function(e, a) {
            var b = this.uF1x
              , c = b.blockSize
              , d = e.slice(a, a + c);
            b.decryptBlock(e, a);
            x.call(this, e, a, c);
            this.Ff4j = d
        }
    });
    b = b.CBC = q;
    q = (p.pad = {}).Pkcs7 = {
        pad: function(a, b) {
            for (var c = 4 * b, c = c - a.sigBytes % c, d = c << 24 | c << 16 | c << 8 | c, l = [], n = 0; n < c; n += 4)
                l.push(d);
            c = s.create(l, c);
            a.concat(c)
        },
        unpad: function(a) {
            a.sigBytes -= a.words[a.sigBytes - 1 >>> 2] & 255
        }
    };
    d.BlockCipher = v.extend({
        cfg: v.cfg.extend({
            mode: b,
            padding: q
        }),
        reset: function() {
            v.reset.call(this);
            var a = this.cfg
              , b = a.iv
              , a = a.mode;
            if (this.WF4J == this.FT4X)
                var c = a.createEncryptor;
            else
                c = a.createDecryptor,
                this.WB4F = 1;
            this.eU6O = c.call(a, this, b && b.words)
        },
        tq0x: function(a, b) {
            this.eU6O.processBlock(a, b)
        },
        os9j: function() {
            var a = this.cfg.padding;
            if (this.WF4J == this.FT4X) {
                a.pad(this.i4m, this.blockSize);
                var b = this.mI8A(!0)
            } else
                b = this.mI8A(!0),
                a.unpad(b);
            return b
        },
        blockSize: 4
    });
    var n = d.CipherParams = l.extend({
        init: function(a) {
            this.mixIn(a)
        },
        toString: function(a) {
            return (a || this.formatter).stringify(this)
        }
    })
      , b = (p.format = {}).OpenSSL = {
        stringify: function(a) {
            var b = a.ciphertext;
            a = a.salt;
            return (a ? s.create([1398893684, 1701076831]).concat(a).concat(b) : b).toString(r)
        },
        parse: function(a) {
            a = r.parse(a);
            var b = a.words;
            if (1398893684 == b[0] && 1701076831 == b[1]) {
                var c = s.create(b.slice(2, 4));
                b.splice(0, 4);
                a.sigBytes -= 16
            }
            return n.create({
                ciphertext: a,
                salt: c
            })
        }
    }
      , a = d.SerializableCipher = l.extend({
        cfg: l.extend({
            format: b
        }),
        encrypt: function(a, b, c, d) {
            d = this.cfg.extend(d);
            var l = a.createEncryptor(c, d);
            b = l.finalize(b);
            l = l.cfg;
            return n.create({
                ciphertext: b,
                key: c,
                iv: l.iv,
                algorithm: a,
                mode: l.mode,
                padding: l.padding,
                blockSize: a.blockSize,
                formatter: d.format
            })
        },
        decrypt: function(a, b, c, d) {
            d = this.cfg.extend(d);
            b = this.JX0x(b, d.format);
            return a.createDecryptor(c, d).finalize(b.ciphertext)
        },
        JX0x: function(a, b) {
            return "string" == typeof a ? b.parse(a, this) : a
        }
    })
      , p = (p.kdf = {}).OpenSSL = {
        execute: function(a, b, c, d) {
            d || (d = s.random(8));
            a = w.create({
                keySize: b + c
            }).compute(a, d);
            c = s.create(a.words.slice(b), 4 * c);
            a.sigBytes = 4 * b;
            return n.create({
                key: a,
                iv: c,
                salt: d
            })
        }
    }
      , c = d.PasswordBasedCipher = a.extend({
        cfg: a.cfg.extend({
            kdf: p
        }),
        encrypt: function(b, c, d, l) {
            l = this.cfg.extend(l);
            d = l.kdf.execute(d, b.keySize, b.ivSize);
            l.iv = d.iv;
            b = a.encrypt.call(this, b, c, d.key, l);
            b.mixIn(d);
            return b
        },
        decrypt: function(b, c, d, l) {
            l = this.cfg.extend(l);
            c = this.JX0x(c, l.format);
            d = l.kdf.execute(d, b.keySize, b.ivSize, c.salt);
            l.iv = d.iv;
            return a.decrypt.call(this, b, c, d.key, l)
        }
    })
}();
(function() {
    for (var u = CryptoJS, p = u.lib.BlockCipher, d = u.algo, l = [], s = [], t = [], r = [], w = [], v = [], b = [], x = [], q = [], n = [], a = [], c = 0; 256 > c; c++)
        a[c] = 128 > c ? c << 1 : c << 1 ^ 283;
    for (var e = 0, j = 0, c = 0; 256 > c; c++) {
        var k = j ^ j << 1 ^ j << 2 ^ j << 3 ^ j << 4
          , k = k >>> 8 ^ k & 255 ^ 99;
        l[e] = k;
        s[k] = e;
        var z = a[e]
          , F = a[z]
          , G = a[F]
          , y = 257 * a[k] ^ 16843008 * k;
        t[e] = y << 24 | y >>> 8;
        r[e] = y << 16 | y >>> 16;
        w[e] = y << 8 | y >>> 24;
        v[e] = y;
        y = 16843009 * G ^ 65537 * F ^ 257 * z ^ 16843008 * e;
        b[k] = y << 24 | y >>> 8;
        x[k] = y << 16 | y >>> 16;
        q[k] = y << 8 | y >>> 24;
        n[k] = y;
        e ? (e = z ^ a[a[a[G ^ z]]],
        j ^= a[a[j]]) : e = j = 1
    }
    var H = [0, 1, 2, 4, 8, 16, 32, 64, 128, 27, 54]
      , d = d.AES = p.extend({
        mj8b: function() {
            for (var a = this.J5O, c = a.words, d = a.sigBytes / 4, a = 4 * ((this.baP5U = d + 6) + 1), e = this.bsh6b = [], j = 0; j < a; j++)
                if (j < d)
                    e[j] = c[j];
                else {
                    var k = e[j - 1];
                    j % d ? 6 < d && 4 == j % d && (k = l[k >>> 24] << 24 | l[k >>> 16 & 255] << 16 | l[k >>> 8 & 255] << 8 | l[k & 255]) : (k = k << 8 | k >>> 24,
                    k = l[k >>> 24] << 24 | l[k >>> 16 & 255] << 16 | l[k >>> 8 & 255] << 8 | l[k & 255],
                    k ^= H[j / d | 0] << 24);
                    e[j] = e[j - d] ^ k
                }
            c = this.bsi6c = [];
            for (d = 0; d < a; d++)
                j = a - d,
                k = d % 4 ? e[j] : e[j - 4],
                c[d] = 4 > d || 4 >= j ? k : b[l[k >>> 24]] ^ x[l[k >>> 16 & 255]] ^ q[l[k >>> 8 & 255]] ^ n[l[k & 255]]
        },
        encryptBlock: function(a, b) {
            this.Fg4k(a, b, this.bsh6b, t, r, w, v, l)
        },
        decryptBlock: function(a, c) {
            var d = a[c + 1];
            a[c + 1] = a[c + 3];
            a[c + 3] = d;
            this.Fg4k(a, c, this.bsi6c, b, x, q, n, s);
            d = a[c + 1];
            a[c + 1] = a[c + 3];
            a[c + 3] = d
        },
        Fg4k: function(a, b, c, d, e, j, l, f) {
            for (var m = this.baP5U, g = a[b] ^ c[0], h = a[b + 1] ^ c[1], k = a[b + 2] ^ c[2], n = a[b + 3] ^ c[3], p = 4, r = 1; r < m; r++)
                var q = d[g >>> 24] ^ e[h >>> 16 & 255] ^ j[k >>> 8 & 255] ^ l[n & 255] ^ c[p++]
                  , s = d[h >>> 24] ^ e[k >>> 16 & 255] ^ j[n >>> 8 & 255] ^ l[g & 255] ^ c[p++]
                  , t = d[k >>> 24] ^ e[n >>> 16 & 255] ^ j[g >>> 8 & 255] ^ l[h & 255] ^ c[p++]
                  , n = d[n >>> 24] ^ e[g >>> 16 & 255] ^ j[h >>> 8 & 255] ^ l[k & 255] ^ c[p++]
                  , g = q
                  , h = s
                  , k = t;
            q = (f[g >>> 24] << 24 | f[h >>> 16 & 255] << 16 | f[k >>> 8 & 255] << 8 | f[n & 255]) ^ c[p++];
            s = (f[h >>> 24] << 24 | f[k >>> 16 & 255] << 16 | f[n >>> 8 & 255] << 8 | f[g & 255]) ^ c[p++];
            t = (f[k >>> 24] << 24 | f[n >>> 16 & 255] << 16 | f[g >>> 8 & 255] << 8 | f[h & 255]) ^ c[p++];
            n = (f[n >>> 24] << 24 | f[g >>> 16 & 255] << 16 | f[h >>> 8 & 255] << 8 | f[k & 255]) ^ c[p++];
            a[b] = q;
            a[b + 1] = s;
            a[b + 2] = t;
            a[b + 3] = n
        },
        keySize: 8
    });
    u.AES = p.mY8Q(d)
}
)();
function RSAKeyPair(a, b, c) {
    this.e = biFromHex(a),
    this.d = biFromHex(b),
    this.m = biFromHex(c),
    this.chunkSize = 2 * biHighIndex(this.m),
    this.radix = 16,
    this.barrett = new BarrettMu(this.m)
}
function twoDigit(a) {
    return (10 > a ? "0" : "") + String(a)
}
function encryptedString(a, b) {
    for (var f, g, h, i, j, k, l, c = new Array, d = b.length, e = 0; d > e; )
        c[e] = b.charCodeAt(e),
        e++;
    for (; 0 != c.length % a.chunkSize; )
        c[e++] = 0;
    for (f = c.length,
    g = "",
    e = 0; f > e; e += a.chunkSize) {
        for (j = new BigInt,
        h = 0,
        i = e; i < e + a.chunkSize; ++h)
            j.digits[h] = c[i++],
            j.digits[h] += c[i++] << 8;
        k = a.barrett.powMod(j, a.e),
        l = 16 == a.radix ? biToHex(k) : biToString(k, a.radix),
        g += l + " "
    }
    return g.substring(0, g.length - 1)
}
function decryptedString(a, b) {
    var e, f, g, h, c = b.split(" "), d = "";
    for (e = 0; e < c.length; ++e)
        for (h = 16 == a.radix ? biFromHex(c[e]) : biFromString(c[e], a.radix),
        g = a.barrett.powMod(h, a.d),
        f = 0; f <= biHighIndex(g); ++f)
            d += String.fromCharCode(255 & g.digits[f], g.digits[f] >> 8);
    return 0 == d.charCodeAt(d.length - 1) && (d = d.substring(0, d.length - 1)),
    d
}
function setMaxDigits(a) {
    maxDigits = a,
    ZERO_ARRAY = new Array(maxDigits);
    for (var b = 0; b < ZERO_ARRAY.length; b++)
        ZERO_ARRAY[b] = 0;
    bigZero = new BigInt,
    bigOne = new BigInt,
    bigOne.digits[0] = 1
}
function BigInt(a) {
    this.digits = "boolean" == typeof a && 1 == a ? null : ZERO_ARRAY.slice(0),
    this.isNeg = !1
}
function biFromDecimal(a) {
    for (var d, e, f, b = "-" == a.charAt(0), c = b ? 1 : 0; c < a.length && "0" == a.charAt(c); )
        ++c;
    if (c == a.length)
        d = new BigInt;
    else {
        for (e = a.length - c,
        f = e % dpl10,
        0 == f && (f = dpl10),
        d = biFromNumber(Number(a.substr(c, f))),
        c += f; c < a.length; )
            d = biAdd(biMultiply(d, lr10), biFromNumber(Number(a.substr(c, dpl10)))),
            c += dpl10;
        d.isNeg = b
    }
    return d
}
function biCopy(a) {
    var b = new BigInt(!0);
    return b.digits = a.digits.slice(0),
    b.isNeg = a.isNeg,
    b
}
function biFromNumber(a) {
    var c, b = new BigInt;
    for (b.isNeg = 0 > a,
    a = Math.abs(a),
    c = 0; a > 0; )
        b.digits[c++] = a & maxDigitVal,
        a >>= biRadixBits;
    return b
}
function reverseStr(a) {
    var c, b = "";
    for (c = a.length - 1; c > -1; --c)
        b += a.charAt(c);
    return b
}
function biToString(a, b) {
    var d, e, c = new BigInt;
    for (c.digits[0] = b,
    d = biDivideModulo(a, c),
    e = hexatrigesimalToChar[d[1].digits[0]]; 1 == biCompare(d[0], bigZero); )
        d = biDivideModulo(d[0], c),
        digit = d[1].digits[0],
        e += hexatrigesimalToChar[d[1].digits[0]];
    return (a.isNeg ? "-" : "") + reverseStr(e)
}
function biToDecimal(a) {
    var c, d, b = new BigInt;
    for (b.digits[0] = 10,
    c = biDivideModulo(a, b),
    d = String(c[1].digits[0]); 1 == biCompare(c[0], bigZero); )
        c = biDivideModulo(c[0], b),
        d += String(c[1].digits[0]);
    return (a.isNeg ? "-" : "") + reverseStr(d)
}
function digitToHex(a) {
    var b = 15
      , c = "";
    for (i = 0; 4 > i; ++i)
        c += hexToChar[a & b],
        a >>>= 4;
    return reverseStr(c)
}
function biToHex(a) {
    var d, b = "";
    for (biHighIndex(a),
    d = biHighIndex(a); d > -1; --d)
        b += digitToHex(a.digits[d]);
    return b
}
function charToHex(a) {
    var h, b = 48, c = b + 9, d = 97, e = d + 25, f = 65, g = 90;
    return h = a >= b && c >= a ? a - b : a >= f && g >= a ? 10 + a - f : a >= d && e >= a ? 10 + a - d : 0
}
function hexToDigit(a) {
    var d, b = 0, c = Math.min(a.length, 4);
    for (d = 0; c > d; ++d)
        b <<= 4,
        b |= charToHex(a.charCodeAt(d));
    return b
}
function biFromHex(a) {
    var d, e, b = new BigInt, c = a.length;
    for (d = c,
    e = 0; d > 0; d -= 4,
    ++e)
        b.digits[e] = hexToDigit(a.substr(Math.max(d - 4, 0), Math.min(d, 4)));
    return b
}
function biFromString(a, b) {
    var g, h, i, j, c = "-" == a.charAt(0), d = c ? 1 : 0, e = new BigInt, f = new BigInt;
    for (f.digits[0] = 1,
    g = a.length - 1; g >= d; g--)
        h = a.charCodeAt(g),
        i = charToHex(h),
        j = biMultiplyDigit(f, i),
        e = biAdd(e, j),
        f = biMultiplyDigit(f, b);
    return e.isNeg = c,
    e
}
function biDump(a) {
    return (a.isNeg ? "-" : "") + a.digits.join(" ")
}
function biAdd(a, b) {
    var c, d, e, f;
    if (a.isNeg != b.isNeg)
        b.isNeg = !b.isNeg,
        c = biSubtract(a, b),
        b.isNeg = !b.isNeg;
    else {
        for (c = new BigInt,
        d = 0,
        f = 0; f < a.digits.length; ++f)
            e = a.digits[f] + b.digits[f] + d,
            c.digits[f] = 65535 & e,
            d = Number(e >= biRadix);
        c.isNeg = a.isNeg
    }
    return c
}
function biSubtract(a, b) {
    var c, d, e, f;
    if (a.isNeg != b.isNeg)
        b.isNeg = !b.isNeg,
        c = biAdd(a, b),
        b.isNeg = !b.isNeg;
    else {
        for (c = new BigInt,
        e = 0,
        f = 0; f < a.digits.length; ++f)
            d = a.digits[f] - b.digits[f] + e,
            c.digits[f] = 65535 & d,
            c.digits[f] < 0 && (c.digits[f] += biRadix),
            e = 0 - Number(0 > d);
        if (-1 == e) {
            for (e = 0,
            f = 0; f < a.digits.length; ++f)
                d = 0 - c.digits[f] + e,
                c.digits[f] = 65535 & d,
                c.digits[f] < 0 && (c.digits[f] += biRadix),
                e = 0 - Number(0 > d);
            c.isNeg = !a.isNeg
        } else
            c.isNeg = a.isNeg
    }
    return c
}
function biHighIndex(a) {
    for (var b = a.digits.length - 1; b > 0 && 0 == a.digits[b]; )
        --b;
    return b
}
function biNumBits(a) {
    var e, b = biHighIndex(a), c = a.digits[b], d = (b + 1) * bitsPerDigit;
    for (e = d; e > d - bitsPerDigit && 0 == (32768 & c); --e)
        c <<= 1;
    return e
}
function biMultiply(a, b) {
    var d, h, i, k, c = new BigInt, e = biHighIndex(a), f = biHighIndex(b);
    for (k = 0; f >= k; ++k) {
        for (d = 0,
        i = k,
        j = 0; e >= j; ++j,
        ++i)
            h = c.digits[i] + a.digits[j] * b.digits[k] + d,
            c.digits[i] = h & maxDigitVal,
            d = h >>> biRadixBits;
        c.digits[k + e + 1] = d
    }
    return c.isNeg = a.isNeg != b.isNeg,
    c
}
function biMultiplyDigit(a, b) {
    var c, d, e, f;
    for (result = new BigInt,
    c = biHighIndex(a),
    d = 0,
    f = 0; c >= f; ++f)
        e = result.digits[f] + a.digits[f] * b + d,
        result.digits[f] = e & maxDigitVal,
        d = e >>> biRadixBits;
    return result.digits[1 + c] = d,
    result
}
function arrayCopy(a, b, c, d, e) {
    var g, h, f = Math.min(b + e, a.length);
    for (g = b,
    h = d; f > g; ++g,
    ++h)
        c[h] = a[g]
}
function biShiftLeft(a, b) {
    var e, f, g, h, c = Math.floor(b / bitsPerDigit), d = new BigInt;
    for (arrayCopy(a.digits, 0, d.digits, c, d.digits.length - c),
    e = b % bitsPerDigit,
    f = bitsPerDigit - e,
    g = d.digits.length - 1,
    h = g - 1; g > 0; --g,
    --h)
        d.digits[g] = d.digits[g] << e & maxDigitVal | (d.digits[h] & highBitMasks[e]) >>> f;
    return d.digits[0] = d.digits[g] << e & maxDigitVal,
    d.isNeg = a.isNeg,
    d
}
function biShiftRight(a, b) {
    var e, f, g, h, c = Math.floor(b / bitsPerDigit), d = new BigInt;
    for (arrayCopy(a.digits, c, d.digits, 0, a.digits.length - c),
    e = b % bitsPerDigit,
    f = bitsPerDigit - e,
    g = 0,
    h = g + 1; g < d.digits.length - 1; ++g,
    ++h)
        d.digits[g] = d.digits[g] >>> e | (d.digits[h] & lowBitMasks[e]) << f;
    return d.digits[d.digits.length - 1] >>>= e,
    d.isNeg = a.isNeg,
    d
}
function biMultiplyByRadixPower(a, b) {
    var c = new BigInt;
    return arrayCopy(a.digits, 0, c.digits, b, c.digits.length - b),
    c
}
function biDivideByRadixPower(a, b) {
    var c = new BigInt;
    return arrayCopy(a.digits, b, c.digits, 0, c.digits.length - b),
    c
}
function biModuloByRadixPower(a, b) {
    var c = new BigInt;
    return arrayCopy(a.digits, 0, c.digits, 0, b),
    c
}
function biCompare(a, b) {
    if (a.isNeg != b.isNeg)
        return 1 - 2 * Number(a.isNeg);
    for (var c = a.digits.length - 1; c >= 0; --c)
        if (a.digits[c] != b.digits[c])
            return a.isNeg ? 1 - 2 * Number(a.digits[c] > b.digits[c]) : 1 - 2 * Number(a.digits[c] < b.digits[c]);
    return 0
}
function biDivideModulo(a, b) {
    var f, g, h, i, j, k, l, m, n, o, p, q, r, s, c = biNumBits(a), d = biNumBits(b), e = b.isNeg;
    if (d > c)
        return a.isNeg ? (f = biCopy(bigOne),
        f.isNeg = !b.isNeg,
        a.isNeg = !1,
        b.isNeg = !1,
        g = biSubtract(b, a),
        a.isNeg = !0,
        b.isNeg = e) : (f = new BigInt,
        g = biCopy(a)),
        new Array(f,g);
    for (f = new BigInt,
    g = a,
    h = Math.ceil(d / bitsPerDigit) - 1,
    i = 0; b.digits[h] < biHalfRadix; )
        b = biShiftLeft(b, 1),
        ++i,
        ++d,
        h = Math.ceil(d / bitsPerDigit) - 1;
    for (g = biShiftLeft(g, i),
    c += i,
    j = Math.ceil(c / bitsPerDigit) - 1,
    k = biMultiplyByRadixPower(b, j - h); -1 != biCompare(g, k); )
        ++f.digits[j - h],
        g = biSubtract(g, k);
    for (l = j; l > h; --l) {
        for (m = l >= g.digits.length ? 0 : g.digits[l],
        n = l - 1 >= g.digits.length ? 0 : g.digits[l - 1],
        o = l - 2 >= g.digits.length ? 0 : g.digits[l - 2],
        p = h >= b.digits.length ? 0 : b.digits[h],
        q = h - 1 >= b.digits.length ? 0 : b.digits[h - 1],
        f.digits[l - h - 1] = m == p ? maxDigitVal : Math.floor((m * biRadix + n) / p),
        r = f.digits[l - h - 1] * (p * biRadix + q),
        s = m * biRadixSquared + (n * biRadix + o); r > s; )
            --f.digits[l - h - 1],
            r = f.digits[l - h - 1] * (p * biRadix | q),
            s = m * biRadix * biRadix + (n * biRadix + o);
        k = biMultiplyByRadixPower(b, l - h - 1),
        g = biSubtract(g, biMultiplyDigit(k, f.digits[l - h - 1])),
        g.isNeg && (g = biAdd(g, k),
        --f.digits[l - h - 1])
    }
    return g = biShiftRight(g, i),
    f.isNeg = a.isNeg != e,
    a.isNeg && (f = e ? biAdd(f, bigOne) : biSubtract(f, bigOne),
    b = biShiftRight(b, i),
    g = biSubtract(b, g)),
    0 == g.digits[0] && 0 == biHighIndex(g) && (g.isNeg = !1),
    new Array(f,g)
}
function biDivide(a, b) {
    return biDivideModulo(a, b)[0]
}
function biModulo(a, b) {
    return biDivideModulo(a, b)[1]
}
function biMultiplyMod(a, b, c) {
    return biModulo(biMultiply(a, b), c)
}
function biPow(a, b) {
    for (var c = bigOne, d = a; ; ) {
        if (0 != (1 & b) && (c = biMultiply(c, d)),
        b >>= 1,
        0 == b)
            break;
        d = biMultiply(d, d)
    }
    return c
}
function biPowMod(a, b, c) {
    for (var d = bigOne, e = a, f = b; ; ) {
        if (0 != (1 & f.digits[0]) && (d = biMultiplyMod(d, e, c)),
        f = biShiftRight(f, 1),
        0 == f.digits[0] && 0 == biHighIndex(f))
            break;
        e = biMultiplyMod(e, e, c)
    }
    return d
}
function BarrettMu(a) {
    this.modulus = biCopy(a),
    this.k = biHighIndex(this.modulus) + 1;
    var b = new BigInt;
    b.digits[2 * this.k] = 1,
    this.mu = biDivide(b, this.modulus),
    this.bkplus1 = new BigInt,
    this.bkplus1.digits[this.k + 1] = 1,
    this.modulo = BarrettMu_modulo,
    this.multiplyMod = BarrettMu_multiplyMod,
    this.powMod = BarrettMu_powMod
}
function BarrettMu_modulo(a) {
    var i, b = biDivideByRadixPower(a, this.k - 1), c = biMultiply(b, this.mu), d = biDivideByRadixPower(c, this.k + 1), e = biModuloByRadixPower(a, this.k + 1), f = biMultiply(d, this.modulus), g = biModuloByRadixPower(f, this.k + 1), h = biSubtract(e, g);
    for (h.isNeg && (h = biAdd(h, this.bkplus1)),
    i = biCompare(h, this.modulus) >= 0; i; )
        h = biSubtract(h, this.modulus),
        i = biCompare(h, this.modulus) >= 0;
    return h
}
function BarrettMu_multiplyMod(a, b) {
    var c = biMultiply(a, b);
    return this.modulo(c)
}
function BarrettMu_powMod(a, b) {
    var d, e, c = new BigInt;
    for (c.digits[0] = 1,
    d = a,
    e = b; ; ) {
        if (0 != (1 & e.digits[0]) && (c = this.multiplyMod(c, d)),
        e = biShiftRight(e, 1),
        0 == e.digits[0] && 0 == biHighIndex(e))
            break;
        d = this.multiplyMod(d, d)
    }
    return c
}
var maxDigits, ZERO_ARRAY, bigZero, bigOne, dpl10, lr10, hexatrigesimalToChar, hexToChar, highBitMasks, lowBitMasks, biRadixBase = 2, biRadixBits = 16, bitsPerDigit = biRadixBits, biRadix = 65536, biHalfRadix = biRadix >>> 1, biRadixSquared = biRadix * biRadix, maxDigitVal = biRadix - 1, maxInteger = 9999999999999998;
setMaxDigits(20),
dpl10 = 15,
lr10 = biFromNumber(1e15),
hexatrigesimalToChar = new Array("0","1","2","3","4","5","6","7","8","9","a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"),
hexToChar = new Array("0","1","2","3","4","5","6","7","8","9","a","b","c","d","e","f"),
highBitMasks = new Array(0,32768,49152,57344,61440,63488,64512,65024,65280,65408,65472,65504,65520,65528,65532,65534,65535),
lowBitMasks = new Array(0,1,3,7,15,31,63,127,255,511,1023,2047,4095,8191,16383,32767,65535);

!function() {
    function a(a) {
        var d, e, b = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789", c = "";
        for (d = 0; a > d; d += 1)
            e = Math.random() * b.length,
            e = Math.floor(e),
            c += b.charAt(e);
        return c
    }
    function b(a, b) {
        var c = CryptoJS.enc.Utf8.parse(b)
          , d = CryptoJS.enc.Utf8.parse("0102030405060708")
          , e = CryptoJS.enc.Utf8.parse(a)
          , f = CryptoJS.AES.encrypt(e, c, {
            iv: d,
            mode: CryptoJS.mode.CBC
        });
        return f.toString()
    }
    function c(a, b, c) {
        var d, e;
        return setMaxDigits(131),
        d = new RSAKeyPair(b,"",c),
        e = encryptedString(d, a)
    }
    function d(d, e, f, g) {
        var h = {}
          , i = a(16);
        return h.encText = b(d, g),
        h.encText = b(h.encText, i),
        h.encSecKey = c(i, e, f),
        h
    }
    function e(a, b, d, e) {
        var f = {};
        return f.encText = c(a + e, b, d),
        f
    }
    asrsea = d,
    ecnonasr = e
}();


function get_post_data(i4m) {
    e = '010001' 
    f = '00e0b509f6259df8642dbc35662901477df22677ec152b5ff68ace615bb7b725152b3ab17a876aea8a5aa76d2e417629ec4ee341f56135fccf695280104e0312ecbda92557c93870114af6c9d05c4f7f0c3685b7a46bee255932575cce10b424d813cfe4875d3e82047b97ddef52741d546b8e289dc6935b3ece0462db0a22b8e7'
    g = '0CoJUm6Qyw8W8jud'
    return  bVg1x = asrsea(JSON.stringify(i4m), e, f, g);
}

 

Python代码💥

import requests
import execjs

f = open('music163.js', encoding='utf-8').read()
js_code = execjs.compile(f)
i4m = {"ids":"[2051548110]","br":128000,"csrf_token":""}
res = js_code.call('get_post_data', i4m)
print(res)
headers = {
    "authority": "music.163.com",
    "accept": "*/*",
    "accept-language": "zh-CN,zh;q=0.9",
    "cache-control": "no-cache",
    "content-type": "application/x-www-form-urlencoded",
    "origin": "https://music.163.com",
    "pragma": "no-cache",
    "referer": "https://music.163.com/outchain/player?type=2&id=2051548110&auto=1&height=66&bg=e8e8e8",
    "sec-ch-ua": "\"Google Chrome\";v=\"119\", \"Chromium\";v=\"119\", \"Not?A_Brand\";v=\"24\"",
    "sec-ch-ua-mobile": "?0",
    "sec-ch-ua-platform": "\"Windows\"",
    "sec-fetch-dest": "empty",
    "sec-fetch-mode": "cors",
    "sec-fetch-site": "same-origin",
    "user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36"
}
cookies = {}
url = "https://music.163.com/weapi/song/enhance/player/url"
data = {
    "params": res['encText'],
    "encSecKey": res['encSecKey']
}
response = requests.post(url, headers=headers, data=data)
print(response.text)
# 文章不理解,我还专门录制了视频进行详细讲解,都放在这个扣裙了 708525271

 

Python逆向爬虫入门教程: 网易云音乐加密参数 params & encSecKey 逆向解析

 

搜索加密参数和评论加密参数都是一样的加密方式, 只是传入的参数不同而已文章来源地址https://www.toymoban.com/news/detail-843813.html

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原文地址:https://www.cnblogs.com/hahaa/p/17962426

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