请求参数sign逆向
t 时间戳
sign
关键字 路径 启动器
启动器
1. 网络 全部 刷新 搜索想爬取的关键字 点一下下面搜索到的 右边查找颜色深的 右边预览没有加密 载荷（请求参数加密） t 时间戳 sign data 三个变化
2. 启动器（点开js） control+f sign 找到 sign: j 在 sign: j 上面的 j = .... 打断点 刷新
py
# h(d.token + "&" + i + "&" + g + "&" + c.data)
import time
import execjs
import requests
token = "5bda6bd1d5a3c53d60ace77feb231a42"
i = round(time.time()*1000) # t 时间戳 是否是13位 round 去除小数，保留整数
g = "12574478"
data = '{"cid":"FactoryRankServiceWidget:FactoryRankServiceWidget","methodName":"execute","params":"{\\"extParam\\":{\\"methodName\\":\\"readRelatedRankEntries\\",\\"cateId\\":\\"10166\\",\\"size\\":\\"15\\"}}"}'
with open('./sign加密.js', 'r', encoding='utf-8') as f:
jscode = f.read()
signKey = token + "&" + str(i) + "&" + g + "&" + data
# print(i)
ctx = execjs.compile(jscode).call('h', signKey)
# print(ctx)
上面的data 是变化的，验证不了
怎么验证ctx 是不是正确的？ js断点 刷新 把i复制进代码 看看结果是不是一样的就可以了
url = 'https://h5api.m.1688.com/h5/mtop.taobao.widgetservice.getjsoncomponent/1.0/?'
parmas = {
'jsv': '2.6.1',
'appKey': '12574478',
't': i,
'sign': ctx,
'v': '1.0',
'type': 'jsonp',
'isSec': 0,
'timeout': 20000,
'api': 'mtop.taobao.widgetService.getJsonComponent',
'dataType': 'jsonp',
'jsonpIncPrefix': 'mboxfc',
'callback': 'mtopjsonpmboxfc3'
}
parmas['data'] = data
hearder = {
'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.36',
'referer': 'https://sale.1688.com/',
'cookie':' cna=y5QKG3UiSToCAdpYjPyhGvE9; cookie2=1a77c757020097405bda7fd86c8930cc; sgcookie=E100nIkM1tcX%2FC8QQzhWigVLXfg6HeTcdoZqYYNZTr3ZGZgLtBRyp7Z%2FqAsEI0KlVTwLhoa9wQrg6n7JOF9%2BGyomRLh%2BtGzM7g0W%2FcVsKxojAT5bBxOJExXlQHrIaGl3u%2BBX; t=9ff4672d6063db765688d57ac9cbb8c1; _tb_token_=e57773e36418b; csg=bcf24a2f; lid=t_1478598290295_0; __cn_logon__=false; _m_h5_tk=5bda6bd1d5a3c53d60ace77feb231a42_1679237633378; _m_h5_tk_enc=2b04f506d1d030d4d4f2fb18f79efebe; xlly_s=1; alicnweb=touch_tb_at%3D1679234475885; isg=BKKiHPwyMuqf-inCXBvu9q048ygE86YNFI_XlOw7bpXAv0M51IbBHfJ-7vtDjB6l; l=fBOI3PYHT5t2UYkiBO5Courza77OPIRb8iVzaNbMiIEGa69A6FtyTNCsEjHvJdtxgT5qNetrl5ZFzdF9r2ULRFkDBeYIujcjfZv68eM3N7AN.; tfstk=cYEhBAODiyuIbgj81WiCmpHPG4WOanpZ97PQbOOSkwu_3hZELscp7ERJgNcGG685.'
}
response = requests.get(url, headers=hearder, params=parmas).text
print(response)
js
function h(a) {
function b(a, b) {
return a << b | a >>> 32 - b
}
function c(a, b) {
var c, d, e, f, g;
return e = 2147483648 & a,
f = 2147483648 & b,
c = 1073741824 & a,
d = 1073741824 & b,
g = (1073741823 & a) + (1073741823 & b),
c & d ? 2147483648 ^ g ^ e ^ f : c | d ? 1073741824 & g ? 3221225472 ^ g ^ e ^ f : 1073741824 ^ g ^ e ^ f : g ^ e ^ f
}
function d(a, b, c) {
return a & b | ~a & c
}
function e(a, b, c) {
return a & c | b & ~c
}
function f(a, b, c) {
return a ^ b ^ c
}
function g(a, b, c) {
return b ^ (a | ~c)
}
function h(a, e, f, g, h, i, j) {
return a = c(a, c(c(d(e, f, g), h), j)),
c(b(a, i), e)
}
function i(a, d, f, g, h, i, j) {
return a = c(a, c(c(e(d, f, g), h), j)),
c(b(a, i), d)
}
function j(a, d, e, g, h, i, j) {
return a = c(a, c(c(f(d, e, g), h), j)),
c(b(a, i), d)
}
function k(a, d, e, f, h, i, j) {
return a = c(a, c(c(g(d, e, f), h), j)),
c(b(a, i), d)
}
function l(a) {
for (var b, c = a.length, d = c + 8, e = (d - d % 64) / 64, f = 16 * (e + 1), g = new Array(f - 1), h = 0, i = 0; c > i; )
b = (i - i % 4) / 4,
h = i % 4 * 8,
g[b] = g[b] | a.charCodeAt(i) << h,
i++;
return b = (i - i % 4) / 4,
h = i % 4 * 8,
g[b] = g[b] | 128 << h,
g[f - 2] = c << 3,
g[f - 1] = c >>> 29,
g
}
function m(a) {
var b, c, d = "", e = "";
for (c = 0; 3 >= c; c++)
b = a >>> 8 * c & 255,
e = "0" + b.toString(16),
d += e.substr(e.length - 2, 2);
return d
}
function n(a) {
a = a.replace(/\r\n/g, "\n");
for (var b = "", c = 0; c < a.length; c++) {
var d = a.charCodeAt(c);
128 > d ? b += String.fromCharCode(d) : d > 127 && 2048 > d ? (b += String.fromCharCode(d >> 6 | 192),
b += String.fromCharCode(63 & d | 128)) : (b += String.fromCharCode(d >> 12 | 224),
b += String.fromCharCode(d >> 6 & 63 | 128),
b += String.fromCharCode(63 & d | 128))
}
return b
}
var o, p, q, r, s, t, u, v, w, x = [], y = 7, z = 12, A = 17, B = 22, C = 5, D = 9, E = 14, F = 20, G = 4, H = 11, I = 16, J = 23, K = 6, L = 10, M = 15, N = 21;
for (a = n(a),
x = l(a),
t = 1732584193,
u = 4023233417,
v = 2562383102,
w = 271733878,
o = 0; o < x.length; o += 16)
p = t,
q = u,
r = v,
s = w,
t = h(t, u, v, w, x[o + 0], y, 3614090360),
w = h(w, t, u, v, x[o + 1], z, 3905402710),
v = h(v, w, t, u, x[o + 2], A, 606105819),
u = h(u, v, w, t, x[o + 3], B, 3250441966),
t = h(t, u, v, w, x[o + 4], y, 4118548399),
w = h(w, t, u, v, x[o + 5], z, 1200080426),
v = h(v, w, t, u, x[o + 6], A, 2821735955),
u = h(u, v, w, t, x[o + 7], B, 4249261313),
t = h(t, u, v, w, x[o + 8], y, 1770035416),
w = h(w, t, u, v, x[o + 9], z, 2336552879),
v = h(v, w, t, u, x[o + 10], A, 4294925233),
u = h(u, v, w, t, x[o + 11], B, 2304563134),
t = h(t, u, v, w, x[o + 12], y, 1804603682),
w = h(w, t, u, v, x[o + 13], z, 4254626195),
v = h(v, w, t, u, x[o + 14], A, 2792965006),
u = h(u, v, w, t, x[o + 15], B, 1236535329),
t = i(t, u, v, w, x[o + 1], C, 4129170786),
w = i(w, t, u, v, x[o + 6], D, 3225465664),
v = i(v, w, t, u, x[o + 11], E, 643717713),
u = i(u, v, w, t, x[o + 0], F, 3921069994),
t = i(t, u, v, w, x[o + 5], C, 3593408605),
w = i(w, t, u, v, x[o + 10], D, 38016083),
v = i(v, w, t, u, x[o + 15], E, 3634488961),
u = i(u, v, w, t, x[o + 4], F, 3889429448),
t = i(t, u, v, w, x[o + 9], C, 568446438),
w = i(w, t, u, v, x[o + 14], D, 3275163606),
v = i(v, w, t, u, x[o + 3], E, 4107603335),
u = i(u, v, w, t, x[o + 8], F, 1163531501),
t = i(t, u, v, w, x[o + 13], C, 2850285829),
w = i(w, t, u, v, x[o + 2], D, 4243563512),
v = i(v, w, t, u, x[o + 7], E, 1735328473),
u = i(u, v, w, t, x[o + 12], F, 2368359562),
t = j(t, u, v, w, x[o + 5], G, 4294588738),
w = j(w, t, u, v, x[o + 8], H, 2272392833),
v = j(v, w, t, u, x[o + 11], I, 1839030562),
u = j(u, v, w, t, x[o + 14], J, 4259657740),
t = j(t, u, v, w, x[o + 1], G, 2763975236),
w = j(w, t, u, v, x[o + 4], H, 1272893353),
v = j(v, w, t, u, x[o + 7], I, 4139469664),
u = j(u, v, w, t, x[o + 10], J, 3200236656),
t = j(t, u, v, w, x[o + 13], G, 681279174),
w = j(w, t, u, v, x[o + 0], H, 3936430074),
v = j(v, w, t, u, x[o + 3], I, 3572445317),
u = j(u, v, w, t, x[o + 6], J, 76029189),
t = j(t, u, v, w, x[o + 9], G, 3654602809),
w = j(w, t, u, v, x[o + 12], H, 3873151461),
v = j(v, w, t, u, x[o + 15], I, 530742520),
u = j(u, v, w, t, x[o + 2], J, 3299628645),
t = k(t, u, v, w, x[o + 0], K, 4096336452),
w = k(w, t, u, v, x[o + 7], L, 1126891415),
v = k(v, w, t, u, x[o + 14], M, 2878612391),
u = k(u, v, w, t, x[o + 5], N, 4237533241),
t = k(t, u, v, w, x[o + 12], K, 1700485571),
w = k(w, t, u, v, x[o + 3], L, 2399980690),
v = k(v, w, t, u, x[o + 10], M, 4293915773),
u = k(u, v, w, t, x[o + 1], N, 2240044497),
t = k(t, u, v, w, x[o + 8], K, 1873313359),
w = k(w, t, u, v, x[o + 15], L, 4264355552),
v = k(v, w, t, u, x[o + 6], M, 2734768916),
u = k(u, v, w, t, x[o + 13], N, 1309151649),
t = k(t, u, v, w, x[o + 4], K, 4149444226),
w = k(w, t, u, v, x[o + 11], L, 3174756917),
v = k(v, w, t, u, x[o + 2], M, 718787259),
u = k(u, v, w, t, x[o + 9], N, 3951481745),
t = c(t, p),
u = c(u, q),
v = c(v, r),
w = c(w, s);
var O = m(t) + m(u) + m(v) + m(w);
return O.toLowerCase()
}
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