python爬蟲破解帶有RSA.js的RSA加密數據的反爬機制

時間 2020-02-04

標籤 python 爬蟲破解帶有 rsa.js rsa 加密數據機制欄目 Python 简体版

原文原文鏈接

前言

同上一篇的aes加密同樣，也是偶然發現這個rsa加密的，目標網站我就不說了，保密。html

當我發現這個網站是ajax加載時：python

我已經習覺得常，正在進行爬取時，發現返回爲空，我開始用findler抓包，發現它驗證了cookie，而後我帶上cookie訪問放到headers裏，就能獲得結果git

headers = { 'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36', 'Cookie': 'ASP.NET_SessionId=minwuelgy2ounvdyz3iy2por; Hm_lvt_db393520fa240b442a13a6d1c5ae95c1=1580346880; Hm_lvt_9d1de05cc99f08ddb5dc6d5e4d32ad30=1580346880; Hm_lvt_94bfa5b89a33cebfead2f88d38657023=1580346880; __root_domain_v=.fujian.gov.cn; _qddaz=QD.3g0yf8.g6u01n.k601qabh; _qdda=4-1.1o7qs8; _qddab=4-4srcpb.k601qagy; _qddamta_2852155767=4-0; _qddagsx_02095bad0b=ce61f2a659adb14f8a169b6f6e05c81a5ba0b7c10c14dab079ac59c11837474633c1cf8d45a58a941043e96faadd7e87a1ed7dd0a20cbc96ab5c957d44eab96abc9fb0317a0d72926ee0051947182f60999b701f7a8e1e7b41f74d9b54e46a352835f09034c3c7fd72247adcbf81fae7b154b077d24d4d17274167c1291cbe0d; Hm_lpvt_9d1de05cc99f08ddb5dc6d5e4d32ad30=1580346887; Hm_lpvt_94bfa5b89a33cebfead2f88d38657023=1580346887; Hm_lpvt_db393520fa240b442a13a6d1c5ae95c1=1580346887' }

這就完了嗎？還差得遠呢，而網上大部分對於這種cookie的爬蟲都是隻到這一步就結束了，我當時查資料的時候也是給我整懵逼了，網上一搜基本都是如此，我不diss誰，我就想說，那若是須要在服務器上運行爬蟲程序呢？你難道每次運行的時候都用瀏覽器去訪問一次而後f12把cookie複製出來嗎？想一想這樣繁瑣不？ajax

由於都知道，cookie是暫時的，也就幾天的有效期，也就是是在這個有效期內，你用你寫的那套代碼能夠獲得結果，有效期一過就不行了，怎麼看cookie有效期，f12調試工具->application->cookies:瀏覽器

以下：服務器

分析破解

那麼上面的cookie那麼多，咱們都要一個一個去找它是怎麼生成的嗎？通過個人分析發現，其實cookie中只須要帶上一個參數就行：cookie

headers = { 'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36', 'Cookie': _qddagsx_02095bad0b=ce61f2a659adb14f8a169b6f6e05c81a5ba0b7c10c14dab079ac59c11837474633c1cf8d45a58a941043e96faadd7e87a1ed7dd0a20cbc96ab5c957d44eab96abc9fb0317a0d72926ee0051947182f60999b701f7a8e1e7b41f74d9b54e46a352835f09034c3c7fd72247adcbf81fae7b154b077d24d4d17274167c1291cbe0d }

對，就是【_qddagsx_02095bad0b】，也就是這裏面最長的字段，好，終於到關鍵的地方了app

我開始找它這個字段是哪裏來的：dom

用這個字段在網站源碼裏查找，很快就找到了ide

源碼：

        function RsaFunc() { setMaxDigits(129); var key = new RSAKeyPair("010001", "", "D718814C9DA3C7F8BB1D414C6B503737886F47FD4BA3E6EF164D9BFA0783AD8255C8401AEE4083794C89D3D4F79E6541DA824E4CC357194C6B02DA19DF84F4FC046137475D089DD07304E86D9508E68633C9454019DDC4B8ED6D24381BEF9071593219067DB4B121FE95471396B07D25850EA7FA4F5E27EB24EE29E158F99831"); var val = "jP5efJMT_jbWimCvZ_hsxW4TdjuV2YWqLPqXcM5gd7c"; var RsaEncrypted = encryptedString(key, val); var isReflash = false; var ck = "_qddagsx_02095bad0b"; if (getCookie(ck) == null) { isReflash = true; } setCookie(ck, RsaEncrypted, 2); if (isReflash) { window.location = window.location; } } RsaFunc();

此時的我忽然就來興致了，這裏面關鍵的js代碼就是兩個函數：RSAKeyPair和encryptedString

而後我開始找這兩個函數的源碼和用法

RSAKeyPair

通過個人研究發現，其實最關鍵的就是這個函數，其實它並非函數，而是一個對象，是引入RSA.js暴露出來的對象

好的，這個放一邊

encryptedString

這個函數也是RSA.js裏的：

第三方js

再通過個人發現，其實還借用了BigInt.js和Barrettt.js

好的，有了眉目以後，將關鍵的代碼放到本地測試，再通過個人調整，代碼以下：

訪問這個html文件，看控制檯的輸出：

發現成了，臥槽，我那個激動啊

而後用這個字段跟以前瀏覽器訪問的對比：

反正長度是同樣了，不知道對不對了，我還發現，每次運行獲得的結果都是不同的，無論那麼多，直接複製新生成的去請求：
header改成以下：

headers = { 'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36',    
    'Cookie':_qddagsx_02095bad0b=45e74e67a1622189d14eb9f5441e435e2959cad917cb7bdf369ae8d91529a4ca8fa63f8b4e04a92ea7322e860476874b4e38bc65ffeeec1368c773037a3245f3c5384408dea3ed2c731b7bcfe233465155865be11c3f219902dfc729387b3fffa392b1b633b392da0232d0c6f4ea54f94a62fc6ab99b3b601598dbb739f69e6e }

import requests url = '' headers = { 'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36', 'Cookie':_qddagsx_02095bad0b=45e74e67a1622189d14eb9f5441e435e2959cad917cb7bdf369ae8d91529a4ca8fa63f8b4e04a92ea7322e860476874b4e38bc65ffeeec1368c773037a3245f3c5384408dea3ed2c731b7bcfe233465155865be11c3f219902dfc729387b3fffa392b1b633b392da0232d0c6f4ea54f94a62fc6ab99b3b601598dbb739f69e6e } req = requests.get(url,headers=headers) res = req.content.decode('utf-8')

發現真的可行，返回結果了，可行，縮減調整js：

/* BigInt */        

    var biRadixBase = 2; var biRadixBits = 16; var bitsPerDigit = biRadixBits; var biRadix = 1 << 16; // = 2^16 = 65536
    var biHalfRadix = biRadix >>> 1; var biRadixSquared = biRadix * biRadix; var maxDigitVal = biRadix - 1; var maxInteger = 9999999999999998; var maxDigits; var ZERO_ARRAY; var bigZero, bigOne; function setMaxDigits(value) { maxDigits = value; ZERO_ARRAY = new Array(maxDigits); for (var iza = 0; iza < ZERO_ARRAY.length; iza++) ZERO_ARRAY[iza] = 0; bigZero = new BigInt(); bigOne = new BigInt(); bigOne.digits[0] = 1; } setMaxDigits(20); var dpl10 = 15; var lr10 = biFromNumber(1000000000000000); function BigInt(flag) { if (typeof flag == "boolean" && flag == true) { this.digits = null; } else { this.digits = ZERO_ARRAY.slice(0); } this.isNeg = false; } function biFromDecimal(s) { var isNeg = s.charAt(0) == '-'; var i = isNeg ? 1 : 0; var result; // Skip leading zeros.
        while (i < s.length && s.charAt(i) == '0') ++i; if (i == s.length) { result = new BigInt(); } else { var digitCount = s.length - i; var fgl = digitCount % dpl10; if (fgl == 0) fgl = dpl10; result = biFromNumber(Number(s.substr(i, fgl))); i += fgl; while (i < s.length) { result = biAdd(biMultiply(result, lr10), biFromNumber(Number(s.substr(i, dpl10)))); i += dpl10; } result.isNeg = isNeg; } return result; } function biCopy(bi) { var result = new BigInt(true); result.digits = bi.digits.slice(0); result.isNeg = bi.isNeg; return result; } function biFromNumber(i) { var result = new BigInt(); result.isNeg = i < 0; i = Math.abs(i); var j = 0; while (i > 0) { result.digits[j++] = i & maxDigitVal; i = Math.floor(i / biRadix); } return result; } function reverseStr(s) { var result = ""; for (var i = s.length - 1; i > -1; --i) { result += s.charAt(i); } return result; } var 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' ); function biToString(x, radix) // 2 <= radix <= 36
 { var b = new BigInt(); b.digits[0] = radix; var qr = biDivideModulo(x, b); var result = hexatrigesimalToChar[qr[1].digits[0]]; while (biCompare(qr[0], bigZero) == 1) { qr = biDivideModulo(qr[0], b); digit = qr[1].digits[0]; result += hexatrigesimalToChar[qr[1].digits[0]]; } return (x.isNeg ? "-" : "") + reverseStr(result); } function biToDecimal(x) { var b = new BigInt(); b.digits[0] = 10; var qr = biDivideModulo(x, b); var result = String(qr[1].digits[0]); while (biCompare(qr[0], bigZero) == 1) { qr = biDivideModulo(qr[0], b); result += String(qr[1].digits[0]); } return (x.isNeg ? "-" : "") + reverseStr(result); } var hexToChar = new Array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'); function digitToHex(n) { var mask = 0xf; var result = ""; for (i = 0; i < 4; ++i) { result += hexToChar[n & mask]; n >>>= 4; } return reverseStr(result); } function biToHex(x) { var result = ""; var n = biHighIndex(x); for (var i = biHighIndex(x); i > -1; --i) { result += digitToHex(x.digits[i]); } return result; } function charToHex(c) { var ZERO = 48; var NINE = ZERO + 9; var littleA = 97; var littleZ = littleA + 25; var bigA = 65; var bigZ = 65 + 25; var result; if (c >= ZERO && c <= NINE) { result = c - ZERO; } else if (c >= bigA && c <= bigZ) { result = 10 + c - bigA; } else if (c >= littleA && c <= littleZ) { result = 10 + c - littleA; } else { result = 0; } return result; } function hexToDigit(s) { var result = 0; var sl = Math.min(s.length, 4); for (var i = 0; i < sl; ++i) { result <<= 4; result |= charToHex(s.charCodeAt(i)) } return result; } function biFromHex(s) { var result = new BigInt(); var sl = s.length; for (var i = sl, j = 0; i > 0; i -= 4, ++j) { result.digits[j] = hexToDigit(s.substr(Math.max(i - 4, 0), Math.min(i, 4))); } return result; } function biFromString(s, radix) { var isNeg = s.charAt(0) == '-'; var istop = isNeg ? 1 : 0; var result = new BigInt(); var place = new BigInt(); place.digits[0] = 1; // radix^0
        for (var i = s.length - 1; i >= istop; i--) { var c = s.charCodeAt(i); var digit = charToHex(c); var biDigit = biMultiplyDigit(place, digit); result = biAdd(result, biDigit); place = biMultiplyDigit(place, radix); } result.isNeg = isNeg; return result; } function biDump(b) { return (b.isNeg ? "-" : "") + b.digits.join(" "); } function biAdd(x, y) { var result; if (x.isNeg != y.isNeg) { y.isNeg = !y.isNeg; result = biSubtract(x, y); y.isNeg = !y.isNeg; } else { result = new BigInt(); var c = 0; var n; for (var i = 0; i < x.digits.length; ++i) { n = x.digits[i] + y.digits[i] + c; result.digits[i] = n % biRadix; c = Number(n >= biRadix); } result.isNeg = x.isNeg; } return result; } function biSubtract(x, y) { var result; if (x.isNeg != y.isNeg) { y.isNeg = !y.isNeg; result = biAdd(x, y); y.isNeg = !y.isNeg; } else { result = new BigInt(); var n, c; c = 0; for (var i = 0; i < x.digits.length; ++i) { n = x.digits[i] - y.digits[i] + c; result.digits[i] = n % biRadix; // Stupid non-conforming modulus operation.
                if (result.digits[i] < 0) result.digits[i] += biRadix; c = 0 - Number(n < 0); } // Fix up the negative sign, if any.
            if (c == -1) { c = 0; for (var i = 0; i < x.digits.length; ++i) { n = 0 - result.digits[i] + c; result.digits[i] = n % biRadix; // Stupid non-conforming modulus operation.
                    if (result.digits[i] < 0) result.digits[i] += biRadix; c = 0 - Number(n < 0); } // Result is opposite sign of arguments.
                result.isNeg = !x.isNeg; } else { // Result is same sign.
                result.isNeg = x.isNeg; } } return result; } function biHighIndex(x) { var result = x.digits.length - 1; while (result > 0 && x.digits[result] == 0) --result; return result; } function biNumBits(x) { var n = biHighIndex(x); var d = x.digits[n]; var m = (n + 1) * bitsPerDigit; var result; for (result = m; result > m - bitsPerDigit; --result) { if ((d & 0x8000) != 0) break; d <<= 1; } return result; } function biMultiply(x, y) { var result = new BigInt(); var c; var n = biHighIndex(x); var t = biHighIndex(y); var u, uv, k; for (var i = 0; i <= t; ++i) { c = 0; k = i; for (j = 0; j <= n; ++j, ++k) { uv = result.digits[k] + x.digits[j] * y.digits[i] + c; result.digits[k] = uv & maxDigitVal; c = uv >>> biRadixBits; //c = Math.floor(uv / biRadix);
 } result.digits[i + n + 1] = c; } // Someone give me a logical xor, please.
        result.isNeg = x.isNeg != y.isNeg; return result; } function biMultiplyDigit(x, y) { var n, c, uv; result = new BigInt(); n = biHighIndex(x); c = 0; for (var j = 0; j <= n; ++j) { uv = result.digits[j] + x.digits[j] * y + c; result.digits[j] = uv & maxDigitVal; c = uv >>> biRadixBits; //c = Math.floor(uv / biRadix);
 } result.digits[1 + n] = c; return result; } function arrayCopy(src, srcStart, dest, destStart, n) { var m = Math.min(srcStart + n, src.length); for (var i = srcStart, j = destStart; i < m; ++i, ++j) { dest[j] = src[i]; } } var highBitMasks = new Array(0x0000, 0x8000, 0xC000, 0xE000, 0xF000, 0xF800, 0xFC00, 0xFE00, 0xFF00, 0xFF80, 0xFFC0, 0xFFE0, 0xFFF0, 0xFFF8, 0xFFFC, 0xFFFE, 0xFFFF); function biShiftLeft(x, n) { var digitCount = Math.floor(n / bitsPerDigit); var result = new BigInt(); arrayCopy(x.digits, 0, result.digits, digitCount, result.digits.length - digitCount); var bits = n % bitsPerDigit; var rightBits = bitsPerDigit - bits; for (var i = result.digits.length - 1, i1 = i - 1; i > 0; --i, --i1) { result.digits[i] = ((result.digits[i] << bits) & maxDigitVal) | ((result.digits[i1] & highBitMasks[bits]) >>> (rightBits)); } result.digits[0] = ((result.digits[i] << bits) & maxDigitVal); result.isNeg = x.isNeg; return result; } var lowBitMasks = new Array(0x0000, 0x0001, 0x0003, 0x0007, 0x000F, 0x001F, 0x003F, 0x007F, 0x00FF, 0x01FF, 0x03FF, 0x07FF, 0x0FFF, 0x1FFF, 0x3FFF, 0x7FFF, 0xFFFF); function biShiftRight(x, n) { var digitCount = Math.floor(n / bitsPerDigit); var result = new BigInt(); arrayCopy(x.digits, digitCount, result.digits, 0, x.digits.length - digitCount); var bits = n % bitsPerDigit; var leftBits = bitsPerDigit - bits; for (var i = 0, i1 = i + 1; i < result.digits.length - 1; ++i, ++i1) { result.digits[i] = (result.digits[i] >>> bits) | ((result.digits[i1] & lowBitMasks[bits]) << leftBits); } result.digits[result.digits.length - 1] >>>= bits; result.isNeg = x.isNeg; return result; } function biMultiplyByRadixPower(x, n) { var result = new BigInt(); arrayCopy(x.digits, 0, result.digits, n, result.digits.length - n); return result; } function biDivideByRadixPower(x, n) { var result = new BigInt(); arrayCopy(x.digits, n, result.digits, 0, result.digits.length - n); return result; } function biModuloByRadixPower(x, n) { var result = new BigInt(); arrayCopy(x.digits, 0, result.digits, 0, n); return result; } function biCompare(x, y) { if (x.isNeg != y.isNeg) { return 1 - 2 * Number(x.isNeg); } for (var i = x.digits.length - 1; i >= 0; --i) { if (x.digits[i] != y.digits[i]) { if (x.isNeg) { return 1 - 2 * Number(x.digits[i] > y.digits[i]); } else { return 1 - 2 * Number(x.digits[i] < y.digits[i]); } } } return 0; } function biDivideModulo(x, y) { var nb = biNumBits(x); var tb = biNumBits(y); var origYIsNeg = y.isNeg; var q, r; if (nb < tb) { // |x| < |y|
            if (x.isNeg) { q = biCopy(bigOne); q.isNeg = !y.isNeg; x.isNeg = false; y.isNeg = false; r = biSubtract(y, x); // Restore signs, 'cause they're references.
                x.isNeg = true; y.isNeg = origYIsNeg; } else { q = new BigInt(); r = biCopy(x); } return new Array(q, r); } q = new BigInt(); r = x; // Normalize Y.
        var t = Math.ceil(tb / bitsPerDigit) - 1; var lambda = 0; while (y.digits[t] < biHalfRadix) { y = biShiftLeft(y, 1); ++lambda; ++tb; t = Math.ceil(tb / bitsPerDigit) - 1; } r = biShiftLeft(r, lambda); nb += lambda; // Update the bit count for x.
        var n = Math.ceil(nb / bitsPerDigit) - 1; var b = biMultiplyByRadixPower(y, n - t); while (biCompare(r, b) != -1) { ++q.digits[n - t]; r = biSubtract(r, b); } for (var i = n; i > t; --i) { var ri = (i >= r.digits.length) ? 0 : r.digits[i]; var ri1 = (i - 1 >= r.digits.length) ? 0 : r.digits[i - 1]; var ri2 = (i - 2 >= r.digits.length) ? 0 : r.digits[i - 2]; var yt = (t >= y.digits.length) ? 0 : y.digits[t]; var yt1 = (t - 1 >= y.digits.length) ? 0 : y.digits[t - 1]; if (ri == yt) { q.digits[i - t - 1] = maxDigitVal; } else { q.digits[i - t - 1] = Math.floor((ri * biRadix + ri1) / yt); } var c1 = q.digits[i - t - 1] * ((yt * biRadix) + yt1); var c2 = (ri * biRadixSquared) + ((ri1 * biRadix) + ri2); while (c1 > c2) { --q.digits[i - t - 1]; c1 = q.digits[i - t - 1] * ((yt * biRadix) | yt1); c2 = (ri * biRadix * biRadix) + ((ri1 * biRadix) + ri2); } b = biMultiplyByRadixPower(y, i - t - 1); r = biSubtract(r, biMultiplyDigit(b, q.digits[i - t - 1])); if (r.isNeg) { r = biAdd(r, b); --q.digits[i - t - 1]; } } r = biShiftRight(r, lambda); // Fiddle with the signs and stuff to make sure that 0 <= r < y.
        q.isNeg = x.isNeg != origYIsNeg; if (x.isNeg) { if (origYIsNeg) { q = biAdd(q, bigOne); } else { q = biSubtract(q, bigOne); } y = biShiftRight(y, lambda); r = biSubtract(y, r); } // Check for the unbelievably stupid degenerate case of r == -0.
        if (r.digits[0] == 0 && biHighIndex(r) == 0) r.isNeg = false; return new Array(q, r); } function biDivide(x, y) { return biDivideModulo(x, y)[0]; } function biModulo(x, y) { return biDivideModulo(x, y)[1]; } function biMultiplyMod(x, y, m) { return biModulo(biMultiply(x, y), m); } function biPow(x, y) { var result = bigOne; var a = x; while (true) { if ((y & 1) != 0) result = biMultiply(result, a); y >>= 1; if (y == 0) break; a = biMultiply(a, a); } return result; } function biPowMod(x, y, m) { var result = bigOne; var a = x; var k = y; while (true) { if ((k.digits[0] & 1) != 0) result = biMultiplyMod(result, a, m); k = biShiftRight(k, 1); if (k.digits[0] == 0 && biHighIndex(k) == 0) break; a = biMultiplyMod(a, a, m); } return result; } // -----------------------------

    /* RSA */        
    
    function RSAKeyPair(encryptionExponent, decryptionExponent, modulus) { this.e = biFromHex(encryptionExponent); this.d = biFromHex(decryptionExponent); this.m = biFromHex(modulus); this.digitSize = 2 * biHighIndex(this.m) + 2; this.chunkSize = this.digitSize - 11; this.radix = 16; this.barrett = new BarrettMu(this.m); } function twoDigit(n) { return (n < 10 ? "0" : "") + String(n); } function encryptedString(key, s) { if (key.chunkSize > key.digitSize - 11) { return "Error"; } var a = new Array(); var sl = s.length; var i = 0; while (i < sl) { a[i] = s.charCodeAt(i); i++; } var al = a.length; var result = ""; var j, k, block; for (i = 0; i < al; i += key.chunkSize) { block = new BigInt(); j = 0; var x; var msgLength = (i+key.chunkSize)>al ? al%key.chunkSize : key.chunkSize; var b = new Array(); for (x=0; x<msgLength; x++) { b[x] = a[i+msgLength-1-x]; } b[msgLength] = 0; // marker
            var paddedSize = Math.max(8, key.digitSize - 3 - msgLength); for (x=0; x<paddedSize; x++) { b[msgLength+1+x] = Math.floor(Math.random()*254) + 1; // [1,255]
 } // It can be asserted that msgLength+paddedSize == key.digitSize-3
            b[key.digitSize-2] = 2; // marker
            b[key.digitSize-1] = 0; // marker
            
            for (k = 0; k < key.digitSize; ++j) { block.digits[j] = b[k++]; block.digits[j] += b[k++] << 8; } var crypt = key.barrett.powMod(block, key.e); var text = key.radix == 16 ? biToHex(crypt) : biToString(crypt, key.radix); result += text + " "; } return result.substring(0, result.length - 1); // Remove last space.
 } function decryptedString(key, s) { var blocks = s.split(" "); var result = ""; var i, j, block; for (i = 0; i < blocks.length; ++i) { var bi; if (key.radix == 16) { bi = biFromHex(blocks[i]); } else { bi = biFromString(blocks[i], key.radix); } block = key.barrett.powMod(bi, key.d); for (j = 0; j <= biHighIndex(block); ++j) { result += String.fromCharCode(block.digits[j] & 255, block.digits[j] >> 8); } } // Remove trailing null, if any.
        if (result.charCodeAt(result.length - 1) == 0) { result = result.substring(0, result.length - 1); } return result; } // ----------------------------- 
    
    /* Barrett */
    
    function BarrettMu(m) { this.modulus = biCopy(m); this.k = biHighIndex(this.modulus) + 1; var b2k = new BigInt(); b2k.digits[2 * this.k] = 1; // b2k = b^(2k)
        this.mu = biDivide(b2k, this.modulus); this.bkplus1 = new BigInt(); this.bkplus1.digits[this.k + 1] = 1; // bkplus1 = b^(k+1)
        this.modulo = BarrettMu_modulo; this.multiplyMod = BarrettMu_multiplyMod; this.powMod = BarrettMu_powMod; } function BarrettMu_modulo(x) { var q1 = biDivideByRadixPower(x, this.k - 1); var q2 = biMultiply(q1, this.mu); var q3 = biDivideByRadixPower(q2, this.k + 1); var r1 = biModuloByRadixPower(x, this.k + 1); var r2term = biMultiply(q3, this.modulus); var r2 = biModuloByRadixPower(r2term, this.k + 1); var r = biSubtract(r1, r2); if (r.isNeg) { r = biAdd(r, this.bkplus1); } var rgtem = biCompare(r, this.modulus) >= 0; while (rgtem) { r = biSubtract(r, this.modulus); rgtem = biCompare(r, this.modulus) >= 0; } return r; } function BarrettMu_multiplyMod(x, y) { var xy = biMultiply(x, y); return this.modulo(xy); } function BarrettMu_powMod(x, y) { var result = new BigInt(); result.digits[0] = 1; var a = x; var k = y; while (true) { if ((k.digits[0] & 1) != 0) result = this.multiplyMod(result, a); k = biShiftRight(k, 1); if (k.digits[0] == 0 && biHighIndex(k) == 0) break; a = this.multiplyMod(a, a); } return result; } // -----------------------------
    
    function RsaFunc() { setMaxDigits(129); var key = new RSAKeyPair("010001", "", "D718814C9DA3C7F8BB1D414C6B503737886F47FD4BA3E6EF164D9BFA0783AD8255C8401AEE4083794C89D3D4F79E6541DA824E4CC357194C6B02DA19DF84F4FC046137475D089DD07304E86D9508E68633C9454019DDC4B8ED6D24381BEF9071593219067DB4B121FE95471396B07D25850EA7FA4F5E27EB24EE29E158F99831"); var val = "jP5efJMT_jb-ACPiy4oTRhq01UbQ3LOZfm3Y9ptBN4Y"; var RsaEncrypted = encryptedString(key, val); return RsaEncrypted; }

RSA加密關鍵部分

好的，把那段js換成本地的，而後execjs執行js，而後獲得封裝到headers裏就好了:

順便再說一句，這裏用js2py行不通，用execjs可行，我也不知道爲啥，用js2py會直接在運行那段js代碼的時候卡住，用execjs在幾秒內就能夠生成那段rsa_key

#!/usr/bin/env python # -*- coding:utf-8 -*- # @Author : Eeyhan # @File : test3.py

import requests import execjs requests.packages.urllib3.disable_warnings() requests.adapters.DEFAULT_RETRIES = 5 js = ''' /* BigInt */ var biRadixBase = 2; var biRadixBits = 16; var bitsPerDigit = biRadixBits; var biRadix = 1 << 16; // = 2^16 = 65536 var biHalfRadix = biRadix >>> 1; var biRadixSquared = biRadix * biRadix; var maxDigitVal = biRadix - 1; var maxInteger = 9999999999999998; var maxDigits; var ZERO_ARRAY; var bigZero, bigOne; function setMaxDigits(value) { maxDigits = value; ZERO_ARRAY = new Array(maxDigits); for (var iza = 0; iza < ZERO_ARRAY.length; iza++) ZERO_ARRAY[iza] = 0; bigZero = new BigInt(); bigOne = new BigInt(); bigOne.digits[0] = 1; } setMaxDigits(20); var dpl10 = 15; var lr10 = biFromNumber(1000000000000000); function BigInt(flag) { if (typeof flag == "boolean" && flag == true) { this.digits = null; } else { this.digits = ZERO_ARRAY.slice(0); } this.isNeg = false; } function biFromDecimal(s) { var isNeg = s.charAt(0) == '-'; var i = isNeg ? 1 : 0; var result; // Skip leading zeros. while (i < s.length && s.charAt(i) == '0') ++i; if (i == s.length) { result = new BigInt(); } else { var digitCount = s.length - i; var fgl = digitCount % dpl10; if (fgl == 0) fgl = dpl10; result = biFromNumber(Number(s.substr(i, fgl))); i += fgl; while (i < s.length) { result = biAdd(biMultiply(result, lr10), biFromNumber(Number(s.substr(i, dpl10)))); i += dpl10; } result.isNeg = isNeg; } return result; } function biCopy(bi) { var result = new BigInt(true); result.digits = bi.digits.slice(0); result.isNeg = bi.isNeg; return result; } function biFromNumber(i) { var result = new BigInt(); result.isNeg = i < 0; i = Math.abs(i); var j = 0; while (i > 0) { result.digits[j++] = i & maxDigitVal; i = Math.floor(i / biRadix); } return result; } function reverseStr(s) { var result = ""; for (var i = s.length - 1; i > -1; --i) { result += s.charAt(i); } return result; } var 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' ); function biToString(x, radix) // 2 <= radix <= 36 { var b = new BigInt(); b.digits[0] = radix; var qr = biDivideModulo(x, b); var result = hexatrigesimalToChar[qr[1].digits[0]]; while (biCompare(qr[0], bigZero) == 1) { qr = biDivideModulo(qr[0], b); digit = qr[1].digits[0]; result += hexatrigesimalToChar[qr[1].digits[0]]; } return (x.isNeg ? "-" : "") + reverseStr(result); } function biToDecimal(x) { var b = new BigInt(); b.digits[0] = 10; var qr = biDivideModulo(x, b); var result = String(qr[1].digits[0]); while (biCompare(qr[0], bigZero) == 1) { qr = biDivideModulo(qr[0], b); result += String(qr[1].digits[0]); } return (x.isNeg ? "-" : "") + reverseStr(result); } var hexToChar = new Array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'); function digitToHex(n) { var mask = 0xf; var result = ""; for (i = 0; i < 4; ++i) { result += hexToChar[n & mask]; n >>>= 4; } return reverseStr(result); } function biToHex(x) { var result = ""; var n = biHighIndex(x); for (var i = biHighIndex(x); i > -1; --i) { result += digitToHex(x.digits[i]); } return result; } function charToHex(c) { var ZERO = 48; var NINE = ZERO + 9; var littleA = 97; var littleZ = littleA + 25; var bigA = 65; var bigZ = 65 + 25; var result; if (c >= ZERO && c <= NINE) { result = c - ZERO; } else if (c >= bigA && c <= bigZ) { result = 10 + c - bigA; } else if (c >= littleA && c <= littleZ) { result = 10 + c - littleA; } else { result = 0; } return result; } function hexToDigit(s) { var result = 0; var sl = Math.min(s.length, 4); for (var i = 0; i < sl; ++i) { result <<= 4; result |= charToHex(s.charCodeAt(i)) } return result; } function biFromHex(s) { var result = new BigInt(); var sl = s.length; for (var i = sl, j = 0; i > 0; i -= 4, ++j) { result.digits[j] = hexToDigit(s.substr(Math.max(i - 4, 0), Math.min(i, 4))); } return result; } function biFromString(s, radix) { var isNeg = s.charAt(0) == '-'; var istop = isNeg ? 1 : 0; var result = new BigInt(); var place = new BigInt(); place.digits[0] = 1; // radix^0 for (var i = s.length - 1; i >= istop; i--) { var c = s.charCodeAt(i); var digit = charToHex(c); var biDigit = biMultiplyDigit(place, digit); result = biAdd(result, biDigit); place = biMultiplyDigit(place, radix); } result.isNeg = isNeg; return result; } function biDump(b) { return (b.isNeg ? "-" : "") + b.digits.join(" "); } function biAdd(x, y) { var result; if (x.isNeg != y.isNeg) { y.isNeg = !y.isNeg; result = biSubtract(x, y); y.isNeg = !y.isNeg; } else { result = new BigInt(); var c = 0; var n; for (var i = 0; i < x.digits.length; ++i) { n = x.digits[i] + y.digits[i] + c; result.digits[i] = n % biRadix; c = Number(n >= biRadix); } result.isNeg = x.isNeg; } return result; } function biSubtract(x, y) { var result; if (x.isNeg != y.isNeg) { y.isNeg = !y.isNeg; result = biAdd(x, y); y.isNeg = !y.isNeg; } else { result = new BigInt(); var n, c; c = 0; for (var i = 0; i < x.digits.length; ++i) { n = x.digits[i] - y.digits[i] + c; result.digits[i] = n % biRadix; // Stupid non-conforming modulus operation. if (result.digits[i] < 0) result.digits[i] += biRadix; c = 0 - Number(n < 0); } // Fix up the negative sign, if any. if (c == -1) { c = 0; for (var i = 0; i < x.digits.length; ++i) { n = 0 - result.digits[i] + c; result.digits[i] = n % biRadix; // Stupid non-conforming modulus operation. if (result.digits[i] < 0) result.digits[i] += biRadix; c = 0 - Number(n < 0); } // Result is opposite sign of arguments. result.isNeg = !x.isNeg; } else { // Result is same sign. result.isNeg = x.isNeg; } } return result; } function biHighIndex(x) { var result = x.digits.length - 1; while (result > 0 && x.digits[result] == 0) --result; return result; } function biNumBits(x) { var n = biHighIndex(x); var d = x.digits[n]; var m = (n + 1) * bitsPerDigit; var result; for (result = m; result > m - bitsPerDigit; --result) { if ((d & 0x8000) != 0) break; d <<= 1; } return result; } function biMultiply(x, y) { var result = new BigInt(); var c; var n = biHighIndex(x); var t = biHighIndex(y); var u, uv, k; for (var i = 0; i <= t; ++i) { c = 0; k = i; for (j = 0; j <= n; ++j, ++k) { uv = result.digits[k] + x.digits[j] * y.digits[i] + c; result.digits[k] = uv & maxDigitVal; c = uv >>> biRadixBits; //c = Math.floor(uv / biRadix); } result.digits[i + n + 1] = c; } // Someone give me a logical xor, please. result.isNeg = x.isNeg != y.isNeg; return result; } function biMultiplyDigit(x, y) { var n, c, uv; result = new BigInt(); n = biHighIndex(x); c = 0; for (var j = 0; j <= n; ++j) { uv = result.digits[j] + x.digits[j] * y + c; result.digits[j] = uv & maxDigitVal; c = uv >>> biRadixBits; //c = Math.floor(uv / biRadix); } result.digits[1 + n] = c; return result; } function arrayCopy(src, srcStart, dest, destStart, n) { var m = Math.min(srcStart + n, src.length); for (var i = srcStart, j = destStart; i < m; ++i, ++j) { dest[j] = src[i]; } } var highBitMasks = new Array(0x0000, 0x8000, 0xC000, 0xE000, 0xF000, 0xF800, 0xFC00, 0xFE00, 0xFF00, 0xFF80, 0xFFC0, 0xFFE0, 0xFFF0, 0xFFF8, 0xFFFC, 0xFFFE, 0xFFFF); function biShiftLeft(x, n) { var digitCount = Math.floor(n / bitsPerDigit); var result = new BigInt(); arrayCopy(x.digits, 0, result.digits, digitCount, result.digits.length - digitCount); var bits = n % bitsPerDigit; var rightBits = bitsPerDigit - bits; for (var i = result.digits.length - 1, i1 = i - 1; i > 0; --i, --i1) { result.digits[i] = ((result.digits[i] << bits) & maxDigitVal) | ((result.digits[i1] & highBitMasks[bits]) >>> (rightBits)); } result.digits[0] = ((result.digits[i] << bits) & maxDigitVal); result.isNeg = x.isNeg; return result; } var lowBitMasks = new Array(0x0000, 0x0001, 0x0003, 0x0007, 0x000F, 0x001F, 0x003F, 0x007F, 0x00FF, 0x01FF, 0x03FF, 0x07FF, 0x0FFF, 0x1FFF, 0x3FFF, 0x7FFF, 0xFFFF); function biShiftRight(x, n) { var digitCount = Math.floor(n / bitsPerDigit); var result = new BigInt(); arrayCopy(x.digits, digitCount, result.digits, 0, x.digits.length - digitCount); var bits = n % bitsPerDigit; var leftBits = bitsPerDigit - bits; for (var i = 0, i1 = i + 1; i < result.digits.length - 1; ++i, ++i1) { result.digits[i] = (result.digits[i] >>> bits) | ((result.digits[i1] & lowBitMasks[bits]) << leftBits); } result.digits[result.digits.length - 1] >>>= bits; result.isNeg = x.isNeg; return result; } function biMultiplyByRadixPower(x, n) { var result = new BigInt(); arrayCopy(x.digits, 0, result.digits, n, result.digits.length - n); return result; } function biDivideByRadixPower(x, n) { var result = new BigInt(); arrayCopy(x.digits, n, result.digits, 0, result.digits.length - n); return result; } function biModuloByRadixPower(x, n) { var result = new BigInt(); arrayCopy(x.digits, 0, result.digits, 0, n); return result; } function biCompare(x, y) { if (x.isNeg != y.isNeg) { return 1 - 2 * Number(x.isNeg); } for (var i = x.digits.length - 1; i >= 0; --i) { if (x.digits[i] != y.digits[i]) { if (x.isNeg) { return 1 - 2 * Number(x.digits[i] > y.digits[i]); } else { return 1 - 2 * Number(x.digits[i] < y.digits[i]); } } } return 0; } function biDivideModulo(x, y) { var nb = biNumBits(x); var tb = biNumBits(y); var origYIsNeg = y.isNeg; var q, r; if (nb < tb) { // |x| < |y| if (x.isNeg) { q = biCopy(bigOne); q.isNeg = !y.isNeg; x.isNeg = false; y.isNeg = false; r = biSubtract(y, x); // Restore signs, 'cause they're references. x.isNeg = true; y.isNeg = origYIsNeg; } else { q = new BigInt(); r = biCopy(x); } return new Array(q, r); } q = new BigInt(); r = x; // Normalize Y. var t = Math.ceil(tb / bitsPerDigit) - 1; var lambda = 0; while (y.digits[t] < biHalfRadix) { y = biShiftLeft(y, 1); ++lambda; ++tb; t = Math.ceil(tb / bitsPerDigit) - 1; } r = biShiftLeft(r, lambda); nb += lambda; // Update the bit count for x. var n = Math.ceil(nb / bitsPerDigit) - 1; var b = biMultiplyByRadixPower(y, n - t); while (biCompare(r, b) != -1) { ++q.digits[n - t]; r = biSubtract(r, b); } for (var i = n; i > t; --i) { var ri = (i >= r.digits.length) ? 0 : r.digits[i]; var ri1 = (i - 1 >= r.digits.length) ? 0 : r.digits[i - 1]; var ri2 = (i - 2 >= r.digits.length) ? 0 : r.digits[i - 2]; var yt = (t >= y.digits.length) ? 0 : y.digits[t]; var yt1 = (t - 1 >= y.digits.length) ? 0 : y.digits[t - 1]; if (ri == yt) { q.digits[i - t - 1] = maxDigitVal; } else { q.digits[i - t - 1] = Math.floor((ri * biRadix + ri1) / yt); } var c1 = q.digits[i - t - 1] * ((yt * biRadix) + yt1); var c2 = (ri * biRadixSquared) + ((ri1 * biRadix) + ri2); while (c1 > c2) { --q.digits[i - t - 1]; c1 = q.digits[i - t - 1] * ((yt * biRadix) | yt1); c2 = (ri * biRadix * biRadix) + ((ri1 * biRadix) + ri2); } b = biMultiplyByRadixPower(y, i - t - 1); r = biSubtract(r, biMultiplyDigit(b, q.digits[i - t - 1])); if (r.isNeg) { r = biAdd(r, b); --q.digits[i - t - 1]; } } r = biShiftRight(r, lambda); // Fiddle with the signs and stuff to make sure that 0 <= r < y. q.isNeg = x.isNeg != origYIsNeg; if (x.isNeg) { if (origYIsNeg) { q = biAdd(q, bigOne); } else { q = biSubtract(q, bigOne); } y = biShiftRight(y, lambda); r = biSubtract(y, r); } // Check for the unbelievably stupid degenerate case of r == -0. if (r.digits[0] == 0 && biHighIndex(r) == 0) r.isNeg = false; return new Array(q, r); } function biDivide(x, y) { return biDivideModulo(x, y)[0]; } function biModulo(x, y) { return biDivideModulo(x, y)[1]; } function biMultiplyMod(x, y, m) { return biModulo(biMultiply(x, y), m); } function biPow(x, y) { var result = bigOne; var a = x; while (true) { if ((y & 1) != 0) result = biMultiply(result, a); y >>= 1; if (y == 0) break; a = biMultiply(a, a); } return result; } function biPowMod(x, y, m) { var result = bigOne; var a = x; var k = y; while (true) { if ((k.digits[0] & 1) != 0) result = biMultiplyMod(result, a, m); k = biShiftRight(k, 1); if (k.digits[0] == 0 && biHighIndex(k) == 0) break; a = biMultiplyMod(a, a, m); } return result; } // ----------------------------- /* RSA */ function RSAKeyPair(encryptionExponent, decryptionExponent, modulus) { this.e = biFromHex(encryptionExponent); this.d = biFromHex(decryptionExponent); this.m = biFromHex(modulus); this.digitSize = 2 * biHighIndex(this.m) + 2; this.chunkSize = this.digitSize - 11; this.radix = 16; this.barrett = new BarrettMu(this.m); } function twoDigit(n) { return (n < 10 ? "0" : "") + String(n); } function encryptedString(key, s) { if (key.chunkSize > key.digitSize - 11) { return "Error"; } var a = new Array(); var sl = s.length; var i = 0; while (i < sl) { a[i] = s.charCodeAt(i); i++; } var al = a.length; var result = ""; var j, k, block; for (i = 0; i < al; i += key.chunkSize) { block = new BigInt(); j = 0; var x; var msgLength = (i+key.chunkSize)>al ? al%key.chunkSize : key.chunkSize; var b = new Array(); for (x=0; x<msgLength; x++) { b[x] = a[i+msgLength-1-x]; } b[msgLength] = 0; // marker var paddedSize = Math.max(8, key.digitSize - 3 - msgLength); for (x=0; x<paddedSize; x++) { b[msgLength+1+x] = Math.floor(Math.random()*254) + 1; // [1,255] } // It can be asserted that msgLength+paddedSize == key.digitSize-3 b[key.digitSize-2] = 2; // marker b[key.digitSize-1] = 0; // marker for (k = 0; k < key.digitSize; ++j) { block.digits[j] = b[k++]; block.digits[j] += b[k++] << 8; } var crypt = key.barrett.powMod(block, key.e); var text = key.radix == 16 ? biToHex(crypt) : biToString(crypt, key.radix); result += text + " "; } return result.substring(0, result.length - 1); // Remove last space. } function decryptedString(key, s) { var blocks = s.split(" "); var result = ""; var i, j, block; for (i = 0; i < blocks.length; ++i) { var bi; if (key.radix == 16) { bi = biFromHex(blocks[i]); } else { bi = biFromString(blocks[i], key.radix); } block = key.barrett.powMod(bi, key.d); for (j = 0; j <= biHighIndex(block); ++j) { result += String.fromCharCode(block.digits[j] & 255, block.digits[j] >> 8); } } // Remove trailing null, if any. if (result.charCodeAt(result.length - 1) == 0) { result = result.substring(0, result.length - 1); } return result; } // ----------------------------- /* Barrett */ function BarrettMu(m) { this.modulus = biCopy(m); this.k = biHighIndex(this.modulus) + 1; var b2k = new BigInt(); b2k.digits[2 * this.k] = 1; // b2k = b^(2k) this.mu = biDivide(b2k, this.modulus); this.bkplus1 = new BigInt(); this.bkplus1.digits[this.k + 1] = 1; // bkplus1 = b^(k+1) this.modulo = BarrettMu_modulo; this.multiplyMod = BarrettMu_multiplyMod; this.powMod = BarrettMu_powMod; } function BarrettMu_modulo(x) { var q1 = biDivideByRadixPower(x, this.k - 1); var q2 = biMultiply(q1, this.mu); var q3 = biDivideByRadixPower(q2, this.k + 1); var r1 = biModuloByRadixPower(x, this.k + 1); var r2term = biMultiply(q3, this.modulus); var r2 = biModuloByRadixPower(r2term, this.k + 1); var r = biSubtract(r1, r2); if (r.isNeg) { r = biAdd(r, this.bkplus1); } var rgtem = biCompare(r, this.modulus) >= 0; while (rgtem) { r = biSubtract(r, this.modulus); rgtem = biCompare(r, this.modulus) >= 0; } return r; } function BarrettMu_multiplyMod(x, y) { var xy = biMultiply(x, y); return this.modulo(xy); } function BarrettMu_powMod(x, y) { var result = new BigInt(); result.digits[0] = 1; var a = x; var k = y; while (true) { if ((k.digits[0] & 1) != 0) result = this.multiplyMod(result, a); k = biShiftRight(k, 1); if (k.digits[0] == 0 && biHighIndex(k) == 0) break; a = this.multiplyMod(a, a); } return result; } // ----------------------------- function RsaFunc() { setMaxDigits(129); var key = new RSAKeyPair("010001", "", "D718814C9DA3C7F8BB1D414C6B503737886F47FD4BA3E6EF164D9BFA0783AD8255C8401AEE4083794C89D3D4F79E6541DA824E4CC357194C6B02DA19DF84F4FC046137475D089DD07304E86D9508E68633C9454019DDC4B8ED6D24381BEF9071593219067DB4B121FE95471396B07D25850EA7FA4F5E27EB24EE29E158F99831"); var val = "jP5efJMT_jb-ACPiy4oTRhq01UbQ3LOZfm3Y9ptBN4Y"; var RsaEncrypted = encryptedString(key, val); return RsaEncrypted; } ''' headers = { 'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36', } data = {'OPtype': 'GetListNew', 'pageSize': '10', 'proArea': '-1', 'announcementType': '-1', 'ProType': '-1', 'xmlx': '-1', 'projectName': '', 'rrr': '0.38874920439722827', 'TopTime': '2020-01-02 00:00:00', 'EndTime': '2020-02-02 23:59:59', 'pageNo': 3, 'category': 'ZFCG'} cx = execjs.compile(js) cookie = cx.call('RsaFunc') print(cookie) cookie = {'Cookie': '_qddagsx_02095bad0b=%s' % cookie} headers.update(cookie) url = '' # 網址保密，本身去找同rsa加密的網站，方法相同
req = requests.post(url, headers=headers, data=data, verify=False) res = req.content.decode('utf-8') print(res)

Python請求rsa加密的網站

理論上本篇文章是完了，其實這裏還有一個坑，目前還不行，由於也是個人研究發現的，有朋友要問，爲何還不行，不是已經搞定了嗎？真的尚未，這裏還有一個大坑：

回到剛剛解析的RSA函數那裏：

根據個人研究，發現圈出區域的字段是會變的，瑪德，你說這裏是否是個大坑？不信？我f5刷新下，再看：

變量val變了，其餘還有沒有變目前沒法得知，那麼就得每次要爬取這個網站以前，先獲取一次這個網站的源碼，將這個RsaFunc重組一下：

完整代碼：

#!/usr/bin/env python # -*- coding:utf-8 -*- # @Author : Eeyhan # @File : test3.py
import time import requests import js2py import execjs start = time.time() js = ''' /* BigInt */ var biRadixBase = 2; var biRadixBits = 16; var bitsPerDigit = biRadixBits; var biRadix = 1 << 16; // = 2^16 = 65536 var biHalfRadix = biRadix >>> 1; var biRadixSquared = biRadix * biRadix; var maxDigitVal = biRadix - 1; var maxInteger = 9999999999999998; var maxDigits; var ZERO_ARRAY; var bigZero, bigOne; function setMaxDigits(value) { maxDigits = value; ZERO_ARRAY = new Array(maxDigits); for (var iza = 0; iza < ZERO_ARRAY.length; iza++) ZERO_ARRAY[iza] = 0; bigZero = new BigInt(); bigOne = new BigInt(); bigOne.digits[0] = 1; } setMaxDigits(20); var dpl10 = 15; var lr10 = biFromNumber(1000000000000000); function BigInt(flag) { if (typeof flag == "boolean" && flag == true) { this.digits = null; } else { this.digits = ZERO_ARRAY.slice(0); } this.isNeg = false; } function biFromDecimal(s) { var isNeg = s.charAt(0) == '-'; var i = isNeg ? 1 : 0; var result; // Skip leading zeros. while (i < s.length && s.charAt(i) == '0') ++i; if (i == s.length) { result = new BigInt(); } else { var digitCount = s.length - i; var fgl = digitCount % dpl10; if (fgl == 0) fgl = dpl10; result = biFromNumber(Number(s.substr(i, fgl))); i += fgl; while (i < s.length) { result = biAdd(biMultiply(result, lr10), biFromNumber(Number(s.substr(i, dpl10)))); i += dpl10; } result.isNeg = isNeg; } return result; } function biCopy(bi) { var result = new BigInt(true); result.digits = bi.digits.slice(0); result.isNeg = bi.isNeg; return result; } function biFromNumber(i) { var result = new BigInt(); result.isNeg = i < 0; i = Math.abs(i); var j = 0; while (i > 0) { result.digits[j++] = i & maxDigitVal; i = Math.floor(i / biRadix); } return result; } function reverseStr(s) { var result = ""; for (var i = s.length - 1; i > -1; --i) { result += s.charAt(i); } return result; } var 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' ); function biToString(x, radix) // 2 <= radix <= 36 { var b = new BigInt(); b.digits[0] = radix; var qr = biDivideModulo(x, b); var result = hexatrigesimalToChar[qr[1].digits[0]]; while (biCompare(qr[0], bigZero) == 1) { qr = biDivideModulo(qr[0], b); digit = qr[1].digits[0]; result += hexatrigesimalToChar[qr[1].digits[0]]; } return (x.isNeg ? "-" : "") + reverseStr(result); } function biToDecimal(x) { var b = new BigInt(); b.digits[0] = 10; var qr = biDivideModulo(x, b); var result = String(qr[1].digits[0]); while (biCompare(qr[0], bigZero) == 1) { qr = biDivideModulo(qr[0], b); result += String(qr[1].digits[0]); } return (x.isNeg ? "-" : "") + reverseStr(result); } var hexToChar = new Array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'); function digitToHex(n) { var mask = 0xf; var result = ""; for (i = 0; i < 4; ++i) { result += hexToChar[n & mask]; n >>>= 4; } return reverseStr(result); } function biToHex(x) { var result = ""; var n = biHighIndex(x); for (var i = biHighIndex(x); i > -1; --i) { result += digitToHex(x.digits[i]); } return result; } function charToHex(c) { var ZERO = 48; var NINE = ZERO + 9; var littleA = 97; var littleZ = littleA + 25; var bigA = 65; var bigZ = 65 + 25; var result; if (c >= ZERO && c <= NINE) { result = c - ZERO; } else if (c >= bigA && c <= bigZ) { result = 10 + c - bigA; } else if (c >= littleA && c <= littleZ) { result = 10 + c - littleA; } else { result = 0; } return result; } function hexToDigit(s) { var result = 0; var sl = Math.min(s.length, 4); for (var i = 0; i < sl; ++i) { result <<= 4; result |= charToHex(s.charCodeAt(i)) } return result; } function biFromHex(s) { var result = new BigInt(); var sl = s.length; for (var i = sl, j = 0; i > 0; i -= 4, ++j) { result.digits[j] = hexToDigit(s.substr(Math.max(i - 4, 0), Math.min(i, 4))); } return result; } function biFromString(s, radix) { var isNeg = s.charAt(0) == '-'; var istop = isNeg ? 1 : 0; var result = new BigInt(); var place = new BigInt(); place.digits[0] = 1; // radix^0 for (var i = s.length - 1; i >= istop; i--) { var c = s.charCodeAt(i); var digit = charToHex(c); var biDigit = biMultiplyDigit(place, digit); result = biAdd(result, biDigit); place = biMultiplyDigit(place, radix); } result.isNeg = isNeg; return result; } function biDump(b) { return (b.isNeg ? "-" : "") + b.digits.join(" "); } function biAdd(x, y) { var result; if (x.isNeg != y.isNeg) { y.isNeg = !y.isNeg; result = biSubtract(x, y); y.isNeg = !y.isNeg; } else { result = new BigInt(); var c = 0; var n; for (var i = 0; i < x.digits.length; ++i) { n = x.digits[i] + y.digits[i] + c; result.digits[i] = n % biRadix; c = Number(n >= biRadix); } result.isNeg = x.isNeg; } return result; } function biSubtract(x, y) { var result; if (x.isNeg != y.isNeg) { y.isNeg = !y.isNeg; result = biAdd(x, y); y.isNeg = !y.isNeg; } else { result = new BigInt(); var n, c; c = 0; for (var i = 0; i < x.digits.length; ++i) { n = x.digits[i] - y.digits[i] + c; result.digits[i] = n % biRadix; // Stupid non-conforming modulus operation. if (result.digits[i] < 0) result.digits[i] += biRadix; c = 0 - Number(n < 0); } // Fix up the negative sign, if any. if (c == -1) { c = 0; for (var i = 0; i < x.digits.length; ++i) { n = 0 - result.digits[i] + c; result.digits[i] = n % biRadix; // Stupid non-conforming modulus operation. if (result.digits[i] < 0) result.digits[i] += biRadix; c = 0 - Number(n < 0); } // Result is opposite sign of arguments. result.isNeg = !x.isNeg; } else { // Result is same sign. result.isNeg = x.isNeg; } } return result; } function biHighIndex(x) { var result = x.digits.length - 1; while (result > 0 && x.digits[result] == 0) --result; return result; } function biNumBits(x) { var n = biHighIndex(x); var d = x.digits[n]; var m = (n + 1) * bitsPerDigit; var result; for (result = m; result > m - bitsPerDigit; --result) { if ((d & 0x8000) != 0) break; d <<= 1; } return result; } function biMultiply(x, y) { var result = new BigInt(); var c; var n = biHighIndex(x); var t = biHighIndex(y); var u, uv, k; for (var i = 0; i <= t; ++i) { c = 0; k = i; for (j = 0; j <= n; ++j, ++k) { uv = result.digits[k] + x.digits[j] * y.digits[i] + c; result.digits[k] = uv & maxDigitVal; c = uv >>> biRadixBits; //c = Math.floor(uv / biRadix); } result.digits[i + n + 1] = c; } // Someone give me a logical xor, please. result.isNeg = x.isNeg != y.isNeg; return result; } function biMultiplyDigit(x, y) { var n, c, uv; result = new BigInt(); n = biHighIndex(x); c = 0; for (var j = 0; j <= n; ++j) { uv = result.digits[j] + x.digits[j] * y + c; result.digits[j] = uv & maxDigitVal; c = uv >>> biRadixBits; //c = Math.floor(uv / biRadix); } result.digits[1 + n] = c; return result; } function arrayCopy(src, srcStart, dest, destStart, n) { var m = Math.min(srcStart + n, src.length); for (var i = srcStart, j = destStart; i < m; ++i, ++j) { dest[j] = src[i]; } } var highBitMasks = new Array(0x0000, 0x8000, 0xC000, 0xE000, 0xF000, 0xF800, 0xFC00, 0xFE00, 0xFF00, 0xFF80, 0xFFC0, 0xFFE0, 0xFFF0, 0xFFF8, 0xFFFC, 0xFFFE, 0xFFFF); function biShiftLeft(x, n) { var digitCount = Math.floor(n / bitsPerDigit); var result = new BigInt(); arrayCopy(x.digits, 0, result.digits, digitCount, result.digits.length - digitCount); var bits = n % bitsPerDigit; var rightBits = bitsPerDigit - bits; for (var i = result.digits.length - 1, i1 = i - 1; i > 0; --i, --i1) { result.digits[i] = ((result.digits[i] << bits) & maxDigitVal) | ((result.digits[i1] & highBitMasks[bits]) >>> (rightBits)); } result.digits[0] = ((result.digits[i] << bits) & maxDigitVal); result.isNeg = x.isNeg; return result; } var lowBitMasks = new Array(0x0000, 0x0001, 0x0003, 0x0007, 0x000F, 0x001F, 0x003F, 0x007F, 0x00FF, 0x01FF, 0x03FF, 0x07FF, 0x0FFF, 0x1FFF, 0x3FFF, 0x7FFF, 0xFFFF); function biShiftRight(x, n) { var digitCount = Math.floor(n / bitsPerDigit); var result = new BigInt(); arrayCopy(x.digits, digitCount, result.digits, 0, x.digits.length - digitCount); var bits = n % bitsPerDigit; var leftBits = bitsPerDigit - bits; for (var i = 0, i1 = i + 1; i < result.digits.length - 1; ++i, ++i1) { result.digits[i] = (result.digits[i] >>> bits) | ((result.digits[i1] & lowBitMasks[bits]) << leftBits); } result.digits[result.digits.length - 1] >>>= bits; result.isNeg = x.isNeg; return result; } function biMultiplyByRadixPower(x, n) { var result = new BigInt(); arrayCopy(x.digits, 0, result.digits, n, result.digits.length - n); return result; } function biDivideByRadixPower(x, n) { var result = new BigInt(); arrayCopy(x.digits, n, result.digits, 0, result.digits.length - n); return result; } function biModuloByRadixPower(x, n) { var result = new BigInt(); arrayCopy(x.digits, 0, result.digits, 0, n); return result; } function biCompare(x, y) { if (x.isNeg != y.isNeg) { return 1 - 2 * Number(x.isNeg); } for (var i = x.digits.length - 1; i >= 0; --i) { if (x.digits[i] != y.digits[i]) { if (x.isNeg) { return 1 - 2 * Number(x.digits[i] > y.digits[i]); } else { return 1 - 2 * Number(x.digits[i] < y.digits[i]); } } } return 0; } function biDivideModulo(x, y) { var nb = biNumBits(x); var tb = biNumBits(y); var origYIsNeg = y.isNeg; var q, r; if (nb < tb) { // |x| < |y| if (x.isNeg) { q = biCopy(bigOne); q.isNeg = !y.isNeg; x.isNeg = false; y.isNeg = false; r = biSubtract(y, x); // Restore signs, 'cause they're references. x.isNeg = true; y.isNeg = origYIsNeg; } else { q = new BigInt(); r = biCopy(x); } return new Array(q, r); } q = new BigInt(); r = x; // Normalize Y. var t = Math.ceil(tb / bitsPerDigit) - 1; var lambda = 0; while (y.digits[t] < biHalfRadix) { y = biShiftLeft(y, 1); ++lambda; ++tb; t = Math.ceil(tb / bitsPerDigit) - 1; } r = biShiftLeft(r, lambda); nb += lambda; // Update the bit count for x. var n = Math.ceil(nb / bitsPerDigit) - 1; var b = biMultiplyByRadixPower(y, n - t); while (biCompare(r, b) != -1) { ++q.digits[n - t]; r = biSubtract(r, b); } for (var i = n; i > t; --i) { var ri = (i >= r.digits.length) ? 0 : r.digits[i]; var ri1 = (i - 1 >= r.digits.length) ? 0 : r.digits[i - 1]; var ri2 = (i - 2 >= r.digits.length) ? 0 : r.digits[i - 2]; var yt = (t >= y.digits.length) ? 0 : y.digits[t]; var yt1 = (t - 1 >= y.digits.length) ? 0 : y.digits[t - 1]; if (ri == yt) { q.digits[i - t - 1] = maxDigitVal; } else { q.digits[i - t - 1] = Math.floor((ri * biRadix + ri1) / yt); } var c1 = q.digits[i - t - 1] * ((yt * biRadix) + yt1); var c2 = (ri * biRadixSquared) + ((ri1 * biRadix) + ri2); while (c1 > c2) { --q.digits[i - t - 1]; c1 = q.digits[i - t - 1] * ((yt * biRadix) | yt1); c2 = (ri * biRadix * biRadix) + ((ri1 * biRadix) + ri2); } b = biMultiplyByRadixPower(y, i - t - 1); r = biSubtract(r, biMultiplyDigit(b, q.digits[i - t - 1])); if (r.isNeg) { r = biAdd(r, b); --q.digits[i - t - 1]; } } r = biShiftRight(r, lambda); // Fiddle with the signs and stuff to make sure that 0 <= r < y. q.isNeg = x.isNeg != origYIsNeg; if (x.isNeg) { if (origYIsNeg) { q = biAdd(q, bigOne); } else { q = biSubtract(q, bigOne); } y = biShiftRight(y, lambda); r = biSubtract(y, r); } // Check for the unbelievably stupid degenerate case of r == -0. if (r.digits[0] == 0 && biHighIndex(r) == 0) r.isNeg = false; return new Array(q, r); } function biDivide(x, y) { return biDivideModulo(x, y)[0]; } function biModulo(x, y) { return biDivideModulo(x, y)[1]; } function biMultiplyMod(x, y, m) { return biModulo(biMultiply(x, y), m); } function biPow(x, y) { var result = bigOne; var a = x; while (true) { if ((y & 1) != 0) result = biMultiply(result, a); y >>= 1; if (y == 0) break; a = biMultiply(a, a); } return result; } function biPowMod(x, y, m) { var result = bigOne; var a = x; var k = y; while (true) { if ((k.digits[0] & 1) != 0) result = biMultiplyMod(result, a, m); k = biShiftRight(k, 1); if (k.digits[0] == 0 && biHighIndex(k) == 0) break; a = biMultiplyMod(a, a, m); } return result; } // ----------------------------- /* RSA */ function RSAKeyPair(encryptionExponent, decryptionExponent, modulus) { this.e = biFromHex(encryptionExponent); this.d = biFromHex(decryptionExponent); this.m = biFromHex(modulus); this.digitSize = 2 * biHighIndex(this.m) + 2; this.chunkSize = this.digitSize - 11; this.radix = 16; this.barrett = new BarrettMu(this.m); } function twoDigit(n) { return (n < 10 ? "0" : "") + String(n); } function encryptedString(key, s) { if (key.chunkSize > key.digitSize - 11) { return "Error"; } var a = new Array(); var sl = s.length; var i = 0; while (i < sl) { a[i] = s.charCodeAt(i); i++; } var al = a.length; var result = ""; var j, k, block; for (i = 0; i < al; i += key.chunkSize) { block = new BigInt(); j = 0; var x; var msgLength = (i+key.chunkSize)>al ? al%key.chunkSize : key.chunkSize; var b = new Array(); for (x=0; x<msgLength; x++) { b[x] = a[i+msgLength-1-x]; } b[msgLength] = 0; // marker var paddedSize = Math.max(8, key.digitSize - 3 - msgLength); for (x=0; x<paddedSize; x++) { b[msgLength+1+x] = Math.floor(Math.random()*254) + 1; // [1,255] } // It can be asserted that msgLength+paddedSize == key.digitSize-3 b[key.digitSize-2] = 2; // marker b[key.digitSize-1] = 0; // marker for (k = 0; k < key.digitSize; ++j) { block.digits[j] = b[k++]; block.digits[j] += b[k++] << 8; } var crypt = key.barrett.powMod(block, key.e); var text = key.radix == 16 ? biToHex(crypt) : biToString(crypt, key.radix); result += text + " "; } return result.substring(0, result.length - 1); // Remove last space. } function decryptedString(key, s) { var blocks = s.split(" "); var result = ""; var i, j, block; for (i = 0; i < blocks.length; ++i) { var bi; if (key.radix == 16) { bi = biFromHex(blocks[i]); } else { bi = biFromString(blocks[i], key.radix); } block = key.barrett.powMod(bi, key.d); for (j = 0; j <= biHighIndex(block); ++j) { result += String.fromCharCode(block.digits[j] & 255, block.digits[j] >> 8); } } // Remove trailing null, if any. if (result.charCodeAt(result.length - 1) == 0) { result = result.substring(0, result.length - 1); } return result; } // ----------------------------- /* Barrett */ function BarrettMu(m) { this.modulus = biCopy(m); this.k = biHighIndex(this.modulus) + 1; var b2k = new BigInt(); b2k.digits[2 * this.k] = 1; // b2k = b^(2k) this.mu = biDivide(b2k, this.modulus); this.bkplus1 = new BigInt(); this.bkplus1.digits[this.k + 1] = 1; // bkplus1 = b^(k+1) this.modulo = BarrettMu_modulo; this.multiplyMod = BarrettMu_multiplyMod; this.powMod = BarrettMu_powMod; } function BarrettMu_modulo(x) { var q1 = biDivideByRadixPower(x, this.k - 1); var q2 = biMultiply(q1, this.mu); var q3 = biDivideByRadixPower(q2, this.k + 1); var r1 = biModuloByRadixPower(x, this.k + 1); var r2term = biMultiply(q3, this.modulus); var r2 = biModuloByRadixPower(r2term, this.k + 1); var r = biSubtract(r1, r2); if (r.isNeg) { r = biAdd(r, this.bkplus1); } var rgtem = biCompare(r, this.modulus) >= 0; while (rgtem) { r = biSubtract(r, this.modulus); rgtem = biCompare(r, this.modulus) >= 0; } return r; } function BarrettMu_multiplyMod(x, y) { var xy = biMultiply(x, y); return this.modulo(xy); } function BarrettMu_powMod(x, y) { var result = new BigInt(); result.digits[0] = 1; var a = x; var k = y; while (true) { if ((k.digits[0] & 1) != 0) result = this.multiplyMod(result, a); k = biShiftRight(k, 1); if (k.digits[0] == 0 && biHighIndex(k) == 0) break; a = this.multiplyMod(a, a); } return result; } // ----------------------------- ''' headers = { 'User-Agent': 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36', # 'Cookie': 'ASP.NET_SessionId=minwuelgy2ounvdyz3iy2por; Hm_lvt_db393520fa240b442a13a6d1c5ae95c1=1580346880; Hm_lvt_9d1de05cc99f08ddb5dc6d5e4d32ad30=1580346880; Hm_lvt_94bfa5b89a33cebfead2f88d38657023=1580346880; __root_domain_v=.fujian.gov.cn; _qddaz=QD.3g0yf8.g6u01n.k601qabh; _qdda=4-1.1o7qs8; _qddab=4-4srcpb.k601qagy; _qddamta_2852155767=4-0; _qddagsx_02095bad0b=ce61f2a659adb14f8a169b6f6e05c81a5ba0b7c10c14dab079ac59c11837474633c1cf8d45a58a941043e96faadd7e87a1ed7dd0a20cbc96ab5c957d44eab96abc9fb0317a0d72926ee0051947182f60999b701f7a8e1e7b41f74d9b54e46a352835f09034c3c7fd72247adcbf81fae7b154b077d24d4d17274167c1291cbe0d; Hm_lpvt_9d1de05cc99f08ddb5dc6d5e4d32ad30=1580346887; Hm_lpvt_94bfa5b89a33cebfead2f88d38657023=1580346887; Hm_lpvt_db393520fa240b442a13a6d1c5ae95c1=1580346887'
    # 'Cookie': '_qddagsx_02095bad0b=5c321b3c5c77caa787de3129fdaabb5a46f302aa0a98bb1729beb95f93a7783cc013259f43161694cb6e0e9b40040a8e5926a49e3b1e7d43c043aee70426627852c537f5759699728b0a7675eb72169844ff43b47f70a62ea17a5476c66db2e177f7eca1384f55a665d3d2bec41a7bcb3ff118f8aabc79a5d995f5aabc901a0d'
} url = '' req = requests.get(url, headers=headers, verify=False) res = req.content.decode('utf-8') start_index = res.index('function RsaFunc') end_index = res.index('var isReflash = false;') rsafunc = res[start_index:end_index] rsafunc += 'return RsaEncrypted;\n}' js += rsafunc cx = execjs.compile(js) cookie = cx.call('RsaFunc') cookie = {'Cookie': '_qddagsx_02095bad0b=%s' % rsa_key} headers.update(cookie) url2 = '' req = requests.post(url2, headers=headers, data=data, verify=False) res = req.content.decode('utf-8')