288 lines
6.8 KiB
JavaScript
288 lines
6.8 KiB
JavaScript
/**
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* 短信发送接口签名示例
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*
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* 本示例演示如何为短信发送接口生成HMAC-SHA256签名
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*
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* 安全提示:
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* 1. 密钥应该通过代码混淆、字符串拆分等方式隐藏
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* 2. 不要在前端代码中直接暴露完整密钥
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* 3. 建议使用构建工具进行代码混淆
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*/
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const crypto = require('crypto')
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/**
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* 获取签名密钥(通过多种方式混淆,增加破解难度)
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* 注意:这只是示例,实际使用时应该进一步混淆
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*/
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function getSecretKey() {
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// 方式1: 字符串拆分和拼接
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const part1 = 'HyApi2026'
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const part2 = 'SMSSecret'
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const part3 = 'Key!@#$%^'
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const part4 = '&*()_+QWERTY'
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const part5 = 'UIOP'
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// 方式2: Base64解码(可选,增加一层混淆)
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// const encoded = Buffer.from('some_base64_string', 'base64').toString();
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// 方式3: 字符数组拼接
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const chars = [
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'T',
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'y',
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'A',
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'p',
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'i',
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'2',
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'0',
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'2',
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'4',
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'S',
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'M',
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'S',
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'S',
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'e',
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'c',
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'r',
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'e',
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't',
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'K',
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'e',
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'y',
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'!',
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'@',
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'#',
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'$',
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'%',
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'^',
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'&',
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'*',
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'(',
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')',
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'_',
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'+',
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'Q',
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'W',
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'E',
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'R',
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'T',
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'Y',
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'U',
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'I',
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'O',
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'P',
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]
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const fromChars = chars.join('')
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// 组合多种方式(实际密钥:HyApi2026SMSSecretKey!@#$%^&*()_+QWERTYUIOP)
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return part1 + part2 + part3 + part4 + part5
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}
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/**
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* 生成随机字符串(用于nonce)
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*/
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function generateNonce(length = 16) {
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const chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
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let result = ''
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for (let i = 0; i < length; i++) {
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result += chars.charAt(Math.floor(Math.random() * chars.length))
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}
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return result
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}
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/**
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* 生成HMAC-SHA256签名
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*
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* @param {Object} params - 请求参数对象
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* @param {string} secretKey - 签名密钥
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* @param {number} timestamp - 时间戳(秒)
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* @param {string} nonce - 随机字符串
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* @returns {string} 签名字符串(hex编码)
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*/
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function generateSignature(params, secretKey, timestamp, nonce) {
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// 1. 构建待签名字符串:按key排序,拼接成 key1=value1&key2=value2 格式
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const keys = Object.keys(params)
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.filter((k) => k !== 'signature') // 排除签名字段
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.sort()
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const parts = keys.map((k) => `${k}=${params[k]}`)
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// 2. 添加时间戳和随机数
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parts.push(`timestamp=${timestamp}`)
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parts.push(`nonce=${nonce}`)
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// 3. 拼接成待签名字符串
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const signString = parts.join('&')
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// 4. 使用HMAC-SHA256计算签名
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const signature = crypto.createHmac('sha256', secretKey).update(signString).digest('hex')
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return signature
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}
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/**
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* 自定义编码字符集(与后端保持一致)
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*/
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const CUSTOM_ENCODE_CHARSET =
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'0123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghjkmnpqrstuvwxyz!@#$%^&*()_+-=[]{}|;:,.<>?'
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/**
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* 自定义Base64编码(使用自定义字符集)
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*/
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function customBase64Encode(data) {
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if (data.length === 0) return ''
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const bytes = Buffer.from(data, 'utf8')
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const charset = CUSTOM_ENCODE_CHARSET
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let result = ''
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// 将3个字节(24位)编码为4个字符
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for (let i = 0; i < bytes.length; i += 3) {
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const b1 = bytes[i]
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const b2 = i + 1 < bytes.length ? bytes[i + 1] : 0
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const b3 = i + 2 < bytes.length ? bytes[i + 2] : 0
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// 组合成24位
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const combined = (b1 << 16) | (b2 << 8) | b3
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// 分成4个6位段
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result += charset[(combined >> 18) & 0x3f]
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result += charset[(combined >> 12) & 0x3f]
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if (i + 1 < bytes.length) {
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result += charset[(combined >> 6) & 0x3f]
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} else {
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result += '=' // 填充字符
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}
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if (i + 2 < bytes.length) {
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result += charset[combined & 0x3f]
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} else {
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result += '=' // 填充字符
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}
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}
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return result
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}
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/**
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* 应用字符偏移混淆
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*/
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function applyCharShift(data, shift) {
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const charset = CUSTOM_ENCODE_CHARSET
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const charsetLen = charset.length
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let result = ''
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for (let i = 0; i < data.length; i++) {
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const c = data[i]
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if (c === '=') {
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result += c // 填充字符不变
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continue
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}
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const idx = charset.indexOf(c)
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if (idx === -1) {
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result += c // 不在字符集中,保持不变
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} else {
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// 应用偏移
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const newIdx = (idx + shift) % charsetLen
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result += charset[newIdx]
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}
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}
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return result
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}
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/**
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* 自定义编码请求数据
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*/
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function encodeRequest(data) {
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// 1. 使用自定义Base64编码
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const encoded = customBase64Encode(data)
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// 2. 应用字符偏移混淆(偏移7个位置)
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const confused = applyCharShift(encoded, 7)
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return confused
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}
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/**
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* 发送短信验证码(带签名)- 方式2:编码后传输(推荐,更安全)
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* 将所有参数(包括签名)使用自定义编码方案编码后传输,隐藏参数结构
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*
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* @param {string} phone - 手机号
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* @param {string} scene - 场景(register/login/change_password/reset_password等)
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* @param {string} apiBaseUrl - API基础URL
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* @returns {Promise<Object>} 响应结果
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*/
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async function sendSMSWithEncodedSignature(phone, scene, apiBaseUrl = 'http://localhost:8080') {
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// 1. 准备参数
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const timestamp = Math.floor(Date.now() / 1000) // 当前时间戳(秒)
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const nonce = generateNonce(16) // 生成随机字符串
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const params = {
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phone: phone,
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scene: scene,
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}
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// 2. 生成签名
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const secretKey = getSecretKey()
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const signature = generateSignature(params, secretKey, timestamp, nonce)
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// 3. 构建包含所有参数的JSON对象
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const allParams = {
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phone: phone,
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scene: scene,
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timestamp: timestamp,
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nonce: nonce,
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signature: signature,
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}
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// 4. 将JSON对象转换为字符串,然后使用自定义编码方案编码
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const jsonString = JSON.stringify(allParams)
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const encodedData = encodeRequest(jsonString)
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// 5. 构建请求体(只包含编码后的data字段)
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const requestBody = {
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data: encodedData,
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}
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// 6. 发送请求
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try {
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const response = await fetch(`${apiBaseUrl}/api/v1/users/send-code`, {
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method: 'POST',
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headers: {
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'Content-Type': 'application/json',
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},
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body: JSON.stringify(requestBody),
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})
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const result = await response.json()
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return result
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} catch (error) {
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console.error('发送短信失败:', error)
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throw error
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}
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}
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// 使用示例
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if (require.main === module) {
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console.log('=== 发送短信验证码(使用自定义编码) ===')
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// 示例:发送注册验证码(使用自定义编码方案,只传递data字段)
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sendSMSWithEncodedSignature('13800138000', 'register', 'http://localhost:8080')
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.then((result) => {
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console.log('发送成功:', result)
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})
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.catch((error) => {
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console.error('发送失败:', error)
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})
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}
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module.exports = {
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sendSMSWithEncodedSignature,
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generateSignature,
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generateNonce,
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getSecretKey,
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encodeRequest,
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}
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