72 lines
2.0 KiB
JavaScript
72 lines
2.0 KiB
JavaScript
/**
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* 加密参数生成模块
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* 根据逆向分析还原的加密逻辑，生成请求所需的加密参数
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*/
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const crypto = require('crypto');
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function md5(str) {
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return crypto.createHash('md5').update(str).digest('hex');
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}
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function sha256(str) {
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return crypto.createHash('sha256').update(str).digest('hex');
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}
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function hmacSha256(message, secret) {
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return crypto.createHmac('sha256', secret).update(message).digest('hex');
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}
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function aesEncrypt(plaintext, key, iv, mode = 'cbc') {
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const algorithm = `aes-${key.length * 8}-${mode}`;
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const cipher = crypto.createCipheriv(algorithm, key, mode === 'ecb' ? null : iv);
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cipher.setAutoPadding(true);
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let encrypted = cipher.update(plaintext, 'utf8', 'base64');
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encrypted += cipher.final('base64');
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return encrypted;
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}
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function aesDecrypt(ciphertext, key, iv, mode = 'cbc') {
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const algorithm = `aes-${key.length * 8}-${mode}`;
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const decipher = crypto.createDecipheriv(algorithm, key, mode === 'ecb' ? null : iv);
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decipher.setAutoPadding(true);
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let decrypted = decipher.update(ciphertext, 'base64', 'utf8');
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decrypted += decipher.final('utf8');
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return decrypted;
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}
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/**
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* 生成请求签名
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* TODO: 根据实际逆向分析修改此函数
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* @param {Object} params - 请求参数
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* @returns {string} 签名值
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*/
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function generateSign(params) {
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const { page, timestamp } = params;
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// 示例：sign = md5(page + "|" + timestamp + "|" + SECRET)
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const SECRET = 'your_secret_here';
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return md5(`${page}|${timestamp}|${SECRET}`);
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}
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/**
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* 生成加密参数 m
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* TODO: 根据实际逆向分析修改此函数
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* @param {number} page - 页码
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* @returns {string} 加密后的参数
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*/
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function generateM(page) {
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const timestamp = Math.floor(Date.now() / 1000);
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const sign = generateSign({ page, timestamp });
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return `${sign}|${timestamp}`;
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}
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module.exports = {
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md5,
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sha256,
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hmacSha256,
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aesEncrypt,
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aesDecrypt,
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generateSign,
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generateM,
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};
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