项目原由
应客户要求，写一个yy批量登录提取cookie的程序，写完之后觉得这个不难，同时对新手可以起到不错的学习作用，遍把此次过程记录下来，想学习web模拟操作的可以根据此篇文章，举一反三
业务流程
- 获取授权码
- 发起登录请求
- 获取登陆回调网址
- 获取回调网址重定向跳转地址
- 访问最终地址获取cookie
开始抓包
首先获取登陆的授权码，如下
此请求返回的内容如下
这个url是登陆的url，并不需要去访问，但是要取url中的oauth_token值，至于ttokensec则是发起登录请求要用到的鉴权参数，
拿到参数后继续发送登陆请求，如下
登陆需要携带的参数为username,pwdencrypt,oauth_token，可以看到pwdencrypt这个参数加密了，不用担心，只要是在web的，用户就可见，我们也一定能模拟它！
我们来直接查找包含pwdencrypt的文件，如果文件过多，我们可以使用断点，不过这个比较简单，直接能够查到，如下
js没有压缩过，直接能够看到逻辑，接着继续查找这个rsa加密算法的源文件，如下
此文件的地址为https://res.udb.duowan.com/lgn/x/js/udb.sdk.rsa.js?V20200102
此js文件是不能在php使用的，可以使用php v8js扩展或者node.js封装，至于加密算法封装，后文再说。
最后会拿到一个callbackurl，访问后会返回一个js代码，如下
提取这个url访问，就会得到cookie，要注意的是，这个需要携带cookie，cookie名为udboauthtmptokensec，值就是上面的ttokensec，登陆到此结束！
功能实现
以下是我用php封装的功能类，可以直接使用
<?php
/**
* YY功能类
* @param Author 流逝中沉沦
* @param QQ 1178710004
* @param Date 2020/09/29
*/
class Yy
{
private $ua = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/85.0.4183.121 Safari/537.36 Edg/85.0.564.63'; //默认UA
private $cookies = "";
/**
* 设置cookie
* @param String $cookie cookies值
*/
public function SetCookie($cookie)
{
if (is_array($cookie)) {
$this->cookies = urldecode(str_replace("&", ";", http_build_query($cookie)));
} else {
$this->cookies = urldecode($cookie);
}
}
/**
* 获取授权码
* @return Mixed 数据集
*/
public function GetAuth()
{
$url = 'https://www.yy.com/login/getSdkAuth?embed=true&cssid=5719_1';
$referer = 'https://www.yy.com/';
$res = $this->get_curl($url, 1, $referer);
$arr = json_decode($res, true);
if (!@array_key_exists("success", $arr) || @$arr['success'] != 1) {
return false;
}
$query = substr(strstr($arr['url'], '?'), 1);
$data = array();
$arrs = explode('&', $query);
foreach ($arrs as $key) {
$arr_temp = explode('=', $key);
$data[$arr_temp[0]] = $arr_temp[1];
}
$arr['data'] = $data;
return $arr;
}
/**
* 账户登录
* @param String $user 账户
* @param String $pwd 密码
* @param String $oauth_token 授权码
* @param String $ttokensec 加密值
* @return Mixed 数据集
*/
public function Login($user, $pwd, $oauth_token, $ttokensec)
{
if (empty($oauth_token) || empty($ttokensec)) {
return array('code' => 0, 'msg' => '缺少必要参数');
}
$pwd = $this->DataEncode($pwd);
if (!$pwd) {
return array('code' => 0, 'msg' => '密码加密失败');
}
$url = 'https://lgn.yy.com/lgn/oauth/x2/s/login_asyn.do';
$post = 'username=' . $user . '&pwdencrypt=' . $pwd . '&oauth_token=' . $oauth_token . '&denyCallbackURL=https%3A%2F%2Fwww.yy.com%2Flogin%2FudbCallback%3Fcancel%3D1&UIStyle=xelogin&appid=5719&cssid=5719_1&mxc=&vk=&isRemMe=1&mmc=&vv=&hiido=1';
$res = $this->get_curl($url, $post);
$arr = json_decode($res, true);
if (!array_key_exists("code", $arr) || $arr['code'] != 0) {
return array('code' => 0, 'msg' => $arr['msg']);
}
$cookie = 'udboauthtmptokensec=' . $ttokensec;
$url = $arr['obj']['callbackURL'];
$res = $this->get_curl($url, 0, 0, $cookie);
preg_match('/writeCrossmainCookieWithCallBack(.*?),fun/', $res, $arr);
$url = str_replace(array("'", '('), "", $arr[1]);
$arr = $this->get_curl($url, 0, 0, $cookie, 1, $this->ua, 0, 0, 1);
$cookies = $this->GetCookie($arr['header'], true);
return array('code' => 1, 'msg' => '登陆成功！', 'cookies' => $cookies);
}
/**
* 获取用户资料
* @return Mixed 数据集
*/
public function GetUserInfo()
{
$url = 'https://www.yy.com/zone/userinfo/getUserInfo.json';
$res = $this->get_curl($url, 0, 0, $this->cookies);
$arr = json_decode($res, true);
if (!array_key_exists("code", $arr) || $arr['code'] != 0) {
return false;
}
return $arr['data'];
}
/**
* 加密内容
* @param String $data 内容
* @return String 结果
*/
private function DataEncode($data)
{
$res = $this->get_curl('https://yyencode.clwl.online/?data=' . $data);
$arr = json_decode($res, true);
if ($arr['code'] != 1 || $arr['data'] == '') {
return false;
}
return $arr['data'];
}
/**
* 返回cookie
* @param String $header 头部信息
* @param Bolean $array 是否数组输出
* @return Mixed 数据集
*/
private function GetCookie($header, $array = false)
{
preg_match_all('/Set-Cookie: (.*?);/iU', $header, $matchs);
$cookie = '';
$cookies = array();
foreach ($matchs[1] as $val) {
if (substr($val, -1) == '=') continue;
$cookie .= $val . '; ';
$temp = explode("=", explode(";", $val)[0]);
$cookies[$temp[0]] = $temp[1];
}
if ($array) {
return $cookies;
}
return $cookie;
}
/**
* Curl get post请求
* @param String $url 网址
* @param String $post POST参数
* @param String $referer refer地址
* @param String $cookie 携带COOKIE
* @param String $header 请求头
* @param String $ua User-agent
* @param String $nobaody 重定向
* @return String 数据
*/
private function get_curl($url, $post = 0, $referer = 0, $cookie = 0, $header = 0, $ua = 0, $nobaody = 0, $json = 0, $split = 0)
{
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
$httpheader[] = "Accept:*/*";
$httpheader[] = "Accept-Encoding: gzip,deflate,sdch";
$httpheader[] = "Accept-Language: zh-CN,zh;q=0.8";
$httpheader[] = "Connection: keep-alive";
if ($json) {
$httpheader[] = "Content-Type: application/json";
}
curl_setopt($ch, CURLOPT_HTTPHEADER, $httpheader);
if ($post) {
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
}
if ($header) {
curl_setopt($ch, CURLOPT_HEADER, TRUE);
}
if ($cookie) {
curl_setopt($ch, CURLOPT_COOKIE, $cookie);
}
if ($referer) {
curl_setopt($ch, CURLOPT_REFERER, $referer);
}
if ($ua) {
curl_setopt($ch, CURLOPT_USERAGENT, $ua);
} else {
curl_setopt($ch, CURLOPT_USERAGENT, $this->ua);
}
if ($nobaody) {
curl_setopt($ch, CURLOPT_NOBODY, 1);
}
curl_setopt($ch, CURLOPT_TIMEOUT, 10);
curl_setopt($ch, CURLOPT_ENCODING, "gzip");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$ret = curl_exec($ch);
if ($split) {
$headerSize = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
$header = substr($ret, 0, $headerSize);
$body = substr($ret, $headerSize);
$ret = array();
$ret['header'] = $header;
$ret['body'] = $body;
}
curl_close($ch);
return $ret;
}
}
$test = new Yy();
$arr = $test->GetAuth(); //获取授权码
if ($arr) {
$arr = $test->Login('账户', '密码', $arr['data']['oauth_token'], $arr['ttokensec']); //发起登陆
if ($arr['code'] == 1) {
$test->SetCookie($arr['cookies']); //设置cookie
var_dump($test->GetUserInfo()); //获取用户信息
}
}
关于密码加密算法
我把它封装成了http接口，使用了node.js,直接node service.js项目即可运行，代码如下
service.js
/**
* yy加密算法
* Author:流逝中沉沦
* @QQ:1178710004
* Blog:https://www.clwl.online/yy
*/
var http = require('http');
var RequestUrl = require('url');
var udb = require('./udb');
http.createServer(function (request, response) {
var obj = RequestUrl.parse(request.url, true);
var get = obj.query;
response.setHeader("Access-Control-Allow-Origin","*");
response.setHeader("Content-type","text/json;charset=utf8");
response.setHeader("status",200);
if (get.data == undefined || get.data == '') {
response.end(JSON.stringify({ code: 0, msg: "DATA不能为空！" }));
}
try {
var p = udb.encode(get.data);
} catch (error) {
var p = error;
}
response.end(JSON.stringify({ code: 1, msg: "获取成功",data:p }));
}).listen(12347);//端口号
udb.js
/*
* RSA, a suite of routines for performing RSA public-key computations in JavaScript.
* Copyright 1998-2005 David Shapiro.
* Dave Shapiro
* dave@ohdave.com
* changed by Fuchun, 2010-05-06
* fcrpg2005@gmail.com
*/
var window = {};
var sinking;
window.$ = {}
window.$pt ={};
var navigator = {};
navigator.appName = "navigator";
navigator.appVersion = "5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Mobile Safari/537.36";
(function() {
var that = {};
var RSAUtils = {};
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;
//maxDigits:
//Change this to accommodate your largest number size. Use setMaxDigits()
//to change it!
//
//In general, if you're working with numbers of size N bits, you'll need 2*N
//bits of storage. Each digit holds 16 bits. So, a 1024-bit key will need
//
//1024 * 2 / 16 = 128 digits of storage.
//
var maxDigits;
var ZERO_ARRAY;
var bigZero, bigOne;
var rsaPubkey_m = "b5f53d3e7ab166d99b91bdee1414364e97a5569d9a4da971dcf241e9aec4ee4ee7a27b203f278be7cc695207d19b9209f0e50a3ea367100e06ad635e4ccde6f8a7179d84b7b9b7365a6a7533a9909695f79f3f531ea3c329b7ede2cd9bb9722104e95c0f234f1a72222b0210579f6582fcaa9d8fa62c431a37d88a4899ebce3d";
var rsaPubkey_e = "10001";
var BigInt = that.BigInt = function(flag) {
if (typeof flag == "boolean" && flag == true) {
this.digits = null;
} else {
this.digits = ZERO_ARRAY.slice(0);
}
this.isNeg = false;
};
RSAUtils.setMaxDigits = function(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;
};
RSAUtils.setMaxDigits(20);
//The maximum number of digits in base 10 you can convert to an
//integer without JavaScript throwing up on you.
var dpl10 = 15;
RSAUtils.biFromNumber = function(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;
};
//lr10 = 10 ^ dpl10
var lr10 = RSAUtils.biFromNumber(1000000000000000);
RSAUtils.biFromDecimal = function(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 = RSAUtils.biFromNumber(Number(s.substr(i, fgl)));
i += fgl;
while (i < s.length) {
result = RSAUtils.biAdd(RSAUtils.biMultiply(result, lr10),
RSAUtils.biFromNumber(Number(s.substr(i, dpl10))));
i += dpl10;
}
result.isNeg = isNeg;
}
return result;
};
RSAUtils.biCopy = function(bi) {
var result = new BigInt(true);
result.digits = bi.digits.slice(0);
result.isNeg = bi.isNeg;
return result;
};
RSAUtils.reverseStr = function(s) {
var result = "";
for (var i = s.length - 1; i > -1; --i) {
result += s.charAt(i);
}
return result;
};
var hexatrigesimalToChar = [
'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'
];
RSAUtils.biToString = function(x, radix) { // 2 <= radix <= 36
var b = new BigInt();
b.digits[0] = radix;
var qr = RSAUtils.biDivideModulo(x, b);
var result = hexatrigesimalToChar[qr[1].digits[0]];
while (RSAUtils.biCompare(qr[0], bigZero) == 1) {
qr = RSAUtils.biDivideModulo(qr[0], b);
digit = qr[1].digits[0];
result += hexatrigesimalToChar[qr[1].digits[0]];
}
return (x.isNeg ? "-" : "") + RSAUtils.reverseStr(result);
};
RSAUtils.biToDecimal = function(x) {
var b = new BigInt();
b.digits[0] = 10;
var qr = RSAUtils.biDivideModulo(x, b);
var result = String(qr[1].digits[0]);
while (RSAUtils.biCompare(qr[0], bigZero) == 1) {
qr = RSAUtils.biDivideModulo(qr[0], b);
result += String(qr[1].digits[0]);
}
return (x.isNeg ? "-" : "") + RSAUtils.reverseStr(result);
};
var hexToChar = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
'a', 'b', 'c', 'd', 'e', 'f'];
RSAUtils.digitToHex = function(n) {
var mask = 0xf;
var result = "";
for (i = 0; i < 4; ++i) {
result += hexToChar[n & mask];
n >>>= 4;
}
return RSAUtils.reverseStr(result);
};
RSAUtils.biToHex = function(x) {
var result = "";
var n = RSAUtils.biHighIndex(x);
for (var i = RSAUtils.biHighIndex(x); i > -1; --i) {
result += RSAUtils.digitToHex(x.digits[i]);
}
return result;
};
RSAUtils.charToHex = function(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;
};
RSAUtils.hexToDigit = function(s) {
var result = 0;
var sl = Math.min(s.length, 4);
for (var i = 0; i < sl; ++i) {
result <<= 4;
result |= RSAUtils.charToHex(s.charCodeAt(i));
}
return result;
};
RSAUtils.biFromHex = function(s) {
var result = new BigInt();
var sl = s.length;
for (var i = sl, j = 0; i > 0; i -= 4, ++j) {
result.digits[j] = RSAUtils.hexToDigit(s.substr(Math.max(i - 4, 0), Math.min(i, 4)));
}
return result;
};
RSAUtils.biFromString = function(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 = RSAUtils.charToHex(c);
var biDigit = RSAUtils.biMultiplyDigit(place, digit);
result = RSAUtils.biAdd(result, biDigit);
place = RSAUtils.biMultiplyDigit(place, radix);
}
result.isNeg = isNeg;
return result;
};
RSAUtils.biDump = function(b) {
return (b.isNeg ? "-" : "") + b.digits.join(" ");
};
RSAUtils.biAdd = function(x, y) {
var result;
if (x.isNeg != y.isNeg) {
y.isNeg = !y.isNeg;
result = RSAUtils.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;
};
RSAUtils.biSubtract = function(x, y) {
var result;
if (x.isNeg != y.isNeg) {
y.isNeg = !y.isNeg;
result = RSAUtils.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;
};
RSAUtils.biHighIndex = function(x) {
var result = x.digits.length - 1;
while (result > 0 && x.digits[result] == 0) --result;
return result;
};
RSAUtils.biNumBits = function(x) {
var n = RSAUtils.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;
};
RSAUtils.biMultiply = function(x, y) {
var result = new BigInt();
var c;
var n = RSAUtils.biHighIndex(x);
var t = RSAUtils.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;
};
RSAUtils.biMultiplyDigit = function(x, y) {
var n, c, uv;
result = new BigInt();
n = RSAUtils.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;
};
RSAUtils.arrayCopy = function(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 = [0x0000, 0x8000, 0xC000, 0xE000, 0xF000, 0xF800,
0xFC00, 0xFE00, 0xFF00, 0xFF80, 0xFFC0, 0xFFE0,
0xFFF0, 0xFFF8, 0xFFFC, 0xFFFE, 0xFFFF];
RSAUtils.biShiftLeft = function(x, n) {
var digitCount = Math.floor(n / bitsPerDigit);
var result = new BigInt();
RSAUtils.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 = [0x0000, 0x0001, 0x0003, 0x0007, 0x000F, 0x001F,
0x003F, 0x007F, 0x00FF, 0x01FF, 0x03FF, 0x07FF,
0x0FFF, 0x1FFF, 0x3FFF, 0x7FFF, 0xFFFF];
RSAUtils.biShiftRight = function(x, n) {
var digitCount = Math.floor(n / bitsPerDigit);
var result = new BigInt();
RSAUtils.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;
};
RSAUtils.biMultiplyByRadixPower = function(x, n) {
var result = new BigInt();
RSAUtils.arrayCopy(x.digits, 0, result.digits, n, result.digits.length - n);
return result;
};
RSAUtils.biDivideByRadixPower = function(x, n) {
var result = new BigInt();
RSAUtils.arrayCopy(x.digits, n, result.digits, 0, result.digits.length - n);
return result;
};
RSAUtils.biModuloByRadixPower = function(x, n) {
var result = new BigInt();
RSAUtils.arrayCopy(x.digits, 0, result.digits, 0, n);
return result;
};
RSAUtils.biCompare = function(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;
};
RSAUtils.biDivideModulo = function(x, y) {
var nb = RSAUtils.biNumBits(x);
var tb = RSAUtils.biNumBits(y);
var origYIsNeg = y.isNeg;
var q, r;
if (nb < tb) {
// |x| < |y|
if (x.isNeg) {
q = RSAUtils.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 = RSAUtils.biCopy(x);
}
return [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 = RSAUtils.biShiftLeft(y, 1);
++lambda;
++tb;
t = Math.ceil(tb / bitsPerDigit) - 1;
}
// Shift r over to keep the quotient constant. We'll shift the
// remainder back at the end.
r = RSAUtils.biShiftLeft(r, lambda);
nb += lambda; // Update the bit count for x.
var n = Math.ceil(nb / bitsPerDigit) - 1;
var b = RSAUtils.biMultiplyByRadixPower(y, n - t);
while (RSAUtils.biCompare(r, b) != -1) {
++q.digits[n - t];
r = RSAUtils.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 = RSAUtils.biMultiplyByRadixPower(y, i - t - 1);
r = RSAUtils.biSubtract(r, RSAUtils.biMultiplyDigit(b, q.digits[i - t - 1]));
if (r.isNeg) {
r = RSAUtils.biAdd(r, b);
--q.digits[i - t - 1];
}
}
r = RSAUtils.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 = RSAUtils.biAdd(q, bigOne);
} else {
q = RSAUtils.biSubtract(q, bigOne);
}
y = RSAUtils.biShiftRight(y, lambda);
r = RSAUtils.biSubtract(y, r);
}
// Check for the unbelievably stupid degenerate case of r == -0.
if (r.digits[0] == 0 && RSAUtils.biHighIndex(r) == 0) r.isNeg = false;
return [q, r];
};
RSAUtils.biDivide = function(x, y) {
return RSAUtils.biDivideModulo(x, y)[0];
};
RSAUtils.biModulo = function(x, y) {
return RSAUtils.biDivideModulo(x, y)[1];
};
RSAUtils.biMultiplyMod = function(x, y, m) {
return RSAUtils.biModulo(RSAUtils.biMultiply(x, y), m);
};
RSAUtils.biPow = function(x, y) {
var result = bigOne;
var a = x;
while (true) {
if ((y & 1) != 0) result = RSAUtils.biMultiply(result, a);
y >>= 1;
if (y == 0) break;
a = RSAUtils.biMultiply(a, a);
}
return result;
};
RSAUtils.biPowMod = function(x, y, m) {
var result = bigOne;
var a = x;
var k = y;
while (true) {
if ((k.digits[0] & 1) != 0) result = RSAUtils.biMultiplyMod(result, a, m);
k = RSAUtils.biShiftRight(k, 1);
if (k.digits[0] == 0 && RSAUtils.biHighIndex(k) == 0) break;
a = RSAUtils.biMultiplyMod(a, a, m);
}
return result;
};
that.BarrettMu = function(m) {
this.modulus = RSAUtils.biCopy(m);
this.k = RSAUtils.biHighIndex(this.modulus) + 1;
var b2k = new BigInt();
b2k.digits[2 * this.k] = 1; // b2k = b^(2k)
this.mu = RSAUtils.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 $dmath = RSAUtils;
var q1 = $dmath.biDivideByRadixPower(x, this.k - 1);
var q2 = $dmath.biMultiply(q1, this.mu);
var q3 = $dmath.biDivideByRadixPower(q2, this.k + 1);
var r1 = $dmath.biModuloByRadixPower(x, this.k + 1);
var r2term = $dmath.biMultiply(q3, this.modulus);
var r2 = $dmath.biModuloByRadixPower(r2term, this.k + 1);
var r = $dmath.biSubtract(r1, r2);
if (r.isNeg) {
r = $dmath.biAdd(r, this.bkplus1);
}
var rgtem = $dmath.biCompare(r, this.modulus) >= 0;
while (rgtem) {
r = $dmath.biSubtract(r, this.modulus);
rgtem = $dmath.biCompare(r, this.modulus) >= 0;
}
return r;
}
function BarrettMu_multiplyMod(x, y) {
/*
x = this.modulo(x);
y = this.modulo(y);
*/
var xy = RSAUtils.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 = RSAUtils.biShiftRight(k, 1);
if (k.digits[0] == 0 && RSAUtils.biHighIndex(k) == 0) break;
a = this.multiplyMod(a, a);
}
return result;
}
var RSAKeyPair = function(encryptionExponent, decryptionExponent, modulus) {
var $dmath = RSAUtils;
this.e = $dmath.biFromHex(encryptionExponent);
this.d = $dmath.biFromHex(decryptionExponent);
this.m = $dmath.biFromHex(modulus);
// We can do two bytes per digit, so
// chunkSize = 2 * (number of digits in modulus - 1).
// Since biHighIndex returns the high index, not the number of digits, 1 has
// already been subtracted.
this.chunkSize = 2 * $dmath.biHighIndex(this.m);
this.radix = 16;
this.barrett = new that.BarrettMu(this.m);
};
RSAUtils.getKeyPair = function(encryptionExponent, decryptionExponent, modulus) {
return new RSAKeyPair(encryptionExponent, decryptionExponent, modulus);
};
if(typeof that.twoDigit === 'undefined') {
that.twoDigit = function(n) {
return (n < 10 ? "0" : "") + String(n);
};
}
// Altered by Rob Saunders (rob@robsaunders.net). New routine pads the
// string after it has been converted to an array. This fixes an
// incompatibility with Flash MX's ActionScript.
RSAUtils.encryptedString = function(s) {
if(s == null || RSAUtils.containsChinese(s)){// do not encrypt when contains chinese
return "";
}
s = s.split("").reverse().join("");
var key = new RSAUtils.getKeyPair(rsaPubkey_e, "", rsaPubkey_m);
var a = [];
var sl = s.length;
var i = 0;
while (i < sl) {
a[i] = s.charCodeAt(i);
i++;
}
while (a.length % key.chunkSize != 0) {
a[i++] = 0;
}
var al = a.length;
var result = "";
var j, k, block;
for (i = 0; i < al; i += key.chunkSize) {
block = new BigInt();
j = 0;
for (k = i; k < i + key.chunkSize; ++j) {
block.digits[j] = a[k++];
block.digits[j] += a[k++] << 8;
}
var crypt = key.barrett.powMod(block, key.e);
var text = key.radix == 16 ? RSAUtils.biToHex(crypt) : RSAUtils.biToString(crypt, key.radix);
result += text + " ";
}
result = result.substring(0, result.length - 1);// Remove last space.
if(result.length == 256){// when result.length not pubkey.length, it is wrong!
return result;
}else if(result.length == 252){ // 个别特殊字符串（如dlknfk101） 加密左边会少4个0000,补齐
return "0000" + result;
}else{
return "";
}
};
RSAUtils.decryptedString = function(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 = RSAUtils.biFromHex(blocks[i]);
}
else {
bi = RSAUtils.biFromString(blocks[i], key.radix);
}
block = key.barrett.powMod(bi, key.d);
for (j = 0; j <= RSAUtils.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;
};
RSAUtils.containsChinese = function(data) {
if(data == null || data.length == 0){
return false;
}
var dataArr = data.split("");
for(var i = 0; i < dataArr.length; i++){
var tmp = dataArr[i];
if(RSAUtils.isChinese(dataArr[i])){
return true;
}
}
return false;
};
RSAUtils.isChinese = function(temp) {
if(temp.charCodeAt(0) > 255){
return true ;
}else {
return false;
}
};
var NS = function(ns, hld) {
var arr = ['window'];
ns = ns.split(".");
while(ns.length != 1) {
arr.push(ns.shift());
if (eval(arr.join('.')) == null) {
eval(arr.join(".") + " = {};");
}
}
arr.push(ns.shift());
eval(arr.join(".") + " = hld;");
}
RSAUtils.setMaxDigits(200);
that.registerNS = NS;
that.RSAUtils = RSAUtils;
that.registerNS("UDB.SDK.rsa", that);
sinking = that;
})();
function encode(data){
return sinking.RSAUtils.encryptedString(data);
}
module.exports = {
encode
}
本次总结
此次分析没有什么难度，只用了10分钟左右，此次记录下来主要是想给刚入门的同学起个示例作用，感谢您的阅读！
https://nerdgaming.science/wiki/Mp3bit.pw_3
http://skodarapidclub.ru/forum/showthread.php?p=1585112#post1585112
Иван Дорн – Страсть (Feat. Vakula) скачать песню в mp3 и слушать онлайн бесплатно
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http://forummsk.getbb.ru/viewtopic.php?f=13&t=805
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https://www.wakewiki.de/index.php?title=Mp3bit.pw
http://mypenza.ru/forum/index.php?showtopic=61357
https://drgcommunity.ro/forum/index.php?/gallery/image/19-%D1%8D%D0%B2%D0%BE%D0%BB%D1%8E%D1%86%D0%B8%D1%8F-%D0%B7%D0%B2%D1%83%D0%BA%D0%B0-%D0%BF%D0%BE%D0%BF%D1%83%D0%BB%D1%8F%D1%80%D0%BD%D1%8B%D0%B5-%D0%BC%D1%83%D0%B7%D1%8B%D0%BA%D0%B0%D0%BB%D1%8C%D0%BD%D1%8B%D0%B5-%D0%B0%D0%BB%D1%8C%D0%B1%D0%BE%D0%BC%D1%8B-%D1%81-%D0%BD%D0%B0%D1%87%D0%B0%D0%BB%D0%B0-90-%D1%85/&context=new
https://madrasah.info/index.php/User:JasminBrowne3
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https://forumvk.webtalk.ru/viewtopic.php?id=6145#p32896
http://www.diablomania.ru/forum/showthread.php?t=432376
http://plastn.nnov.org/dnevnik-plastn/nayti_novinki_muzyki_2024_goda_mozhno_na_sayte_mp3bit.html
http://o91707v5.beget.tech/2024/02/01/process-sozdaniya-hip-hop-treka-ot-idey-do-zapisi.html
http://sdm-servis.ru/component/fireboard/?func=view&catid=5&id=67627#67627
http://piter.bbcity.ru/viewtopic.php?id=10385#p27452
https://infodin.com.br/index.php/User:EdwardFereday
http://hobby-svarka.ru/viewtopic.php?f=5&t=4286
As A New Revolt – Speechless скачать песню в mp3 и слушать онлайн бесплатно
As A New Revolt – Speechless
https://rodme.ru/deep-house-glubiny-zvuchaniya-i-istoricheskiy-put-t10632.html
https://wiki.beingesports.com/index.php?title=User:TorstenShepherds
https://biowiki.clinomics.com/index.php/Mp3gid.co
https://kolomna.rusff.me/viewtopic.php?id=4416#p15395
http://31pokupki.rx22.ru/viewtopic.php?f=47&t=24988
http://dianov.bget.ru/forum/thread52340.html#1183449
Sekon Sta – Party Gods (Tingin Riddim) (Dj Kevin Mmp Intro) (Clean) скачать песню в mp3 и слушать онлайн бесплатно
Sekon Sta – Party Gods (Tingin Riddim) (Dj Kevin Mmp Intro) (Clean)
https://zarabotok.forumrpg.ru/viewtopic.php?id=69098#p150423
http://producm.ru/forum/user/92061/