245 lines
7.3 KiB
JavaScript
245 lines
7.3 KiB
JavaScript
const crypto = require('crypto');
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const fs = require('fs');
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const path = require('path');
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class KeyPairGenerator {
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constructor(options = {}) {
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this.options = {
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modulusLength: 2048, // 2048位在安全性和性能间取得平衡
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publicKeyEncoding: {
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type: 'spki',
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format: 'pem'
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},
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privateKeyEncoding: {
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type: 'pkcs8',
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format: 'pem',
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cipher: 'aes-256-cbc', // 可选加密私钥
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passphrase: options.passphrase || '' // 私钥密码
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},
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...options
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};
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}
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// 生成密钥对
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generateKeyPair() {
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return new Promise((resolve, reject) => {
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crypto.generateKeyPair('rsa', this.options, (err, publicKey, privateKey) => {
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if (err) {
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reject(err);
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return;
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}
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resolve({ publicKey, privateKey });
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});
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});
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}
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// 保存密钥到文件
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saveKeyToFile(key, filename, directory = './keys') {
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if (!fs.existsSync(directory)) {
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fs.mkdirSync(directory, { recursive: true });
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}
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const filePath = path.join(directory, filename);
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fs.writeFileSync(filePath, key);
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console.log(`✅ ${filename} 已保存到: ${filePath}`);
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return filePath;
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}
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// 验证密钥对
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validateKeyPair(publicKey, privateKey, passphrase = '') {
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try {
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// 使用公钥加密测试数据
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const testData = 'test-signature-validation';
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const encrypted = crypto.publicEncrypt(publicKey, Buffer.from(testData));
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// 使用私钥解密
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const decrypted = crypto.privateDecrypt(
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{ key: privateKey, passphrase },
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encrypted
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);
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return decrypted.toString() === testData;
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} catch (error) {
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console.error('❌ 密钥对验证失败:', error.message);
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return false;
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}
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}
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// 生成完整的密钥对文件
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async generateAndSaveKeyPair(outputDir = './keys', keyName = 'app') {
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try {
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console.log('🔐 正在生成 RSA 密钥对...');
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// 生成密钥对
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const { publicKey, privateKey } = await this.generateKeyPair();
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// 验证密钥对
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console.log('🔍 验证密钥对...');
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const isValid = this.validateKeyPair(publicKey, privateKey, this.options.privateKeyEncoding.passphrase);
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if (!isValid) {
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throw new Error('密钥对验证失败');
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}
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console.log('✅ 密钥对验证成功');
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// 保存文件
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const timestamp = new Date().toISOString().split('T')[0]+"-"+(new Date()).getTime();
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const publicKeyFile = this.saveKeyToFile(
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publicKey,
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`${keyName}-public-key-${timestamp}.pem`,
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outputDir
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);
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const privateKeyFile = this.saveKeyToFile(
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privateKey,
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`${keyName}-private-key-${timestamp}.pem`,
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outputDir
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);
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// 生成配置文件示例
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this.generateConfigExample(publicKey, privateKey, outputDir, keyName);
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return {
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publicKey,
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privateKey,
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publicKeyFile,
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privateKeyFile,
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isValid
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};
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} catch (error) {
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console.error('❌ 生成密钥对失败:', error.message);
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throw error;
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}
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}
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// 生成配置文件示例
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generateConfigExample(publicKey, privateKey, outputDir, keyName) {
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const frontendConfig = `
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// 前端配置 (JavaScript/TypeScript)
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const RSA_PUBLIC_KEY = \`${publicKey}\`;
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// 或者从文件导入
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// import publicKey from './${keyName}-public-key.pem';
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`;
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const backendConfig = `
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// 后端配置 (Go)
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package config
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const (
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RSAPrivateKey = \`${privateKey}\`
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)
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// 或者从环境变量读取
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// privateKey := os.Getenv("RSA_PRIVATE_KEY")
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`;
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const envExample = `
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# 环境变量示例
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RSA_PRIVATE_KEY="你的私钥内容"
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RSA_PUBLIC_KEY="你的公钥内容"
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KEY_PASSPHRASE="你的私钥密码（如果有）"
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`;
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const timestamp = new Date().toISOString().split('T')[0]+"-"+(new Date()).getTime();
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this.saveKeyToFile(frontendConfig.trim(), 'frontend-config-example-'+timestamp+'.js', outputDir);
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this.saveKeyToFile(backendConfig.trim(), 'backend-config-example-'+timestamp+'.go', outputDir);
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this.saveKeyToFile(envExample.trim(), '.env.example', outputDir);
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console.log('📝 配置文件示例已生成');
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}
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// 显示密钥信息
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displayKeyInfo(publicKey, privateKey) {
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const publicKeyInfo = crypto.createPublicKey(publicKey);
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const privateKeyInfo = crypto.createPrivateKey({
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key: privateKey,
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passphrase: this.options.privateKeyEncoding.passphrase
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});
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console.log('\n🔑 密钥信息:');
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console.log('──────────────────────────────');
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console.log(`算法: ${publicKeyInfo.asymmetricKeyType}`);
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console.log(`模数长度: ${publicKeyInfo.asymmetricKeySize} 位`);
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console.log(`格式: PEM`);
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if (this.options.privateKeyEncoding.passphrase) {
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console.log(`私钥加密: ${this.options.privateKeyEncoding.cipher}`);
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} else {
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console.log('⚠️ 私钥未加密，建议在生产环境中使用加密私钥');
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}
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}
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}
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// 命令行界面
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function main() {
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const args = process.argv.slice(2);
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const outputDir = args[0] || './keys';
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const keyName = args[1] || 'app';
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const useEncryption = args.includes('--encrypt');
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const passphrase = process.env.KEY_PASSPHRASE || '';
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const generator = new KeyPairGenerator({
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privateKeyEncoding: {
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type: 'pkcs8',
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format: 'pem',
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...(useEncryption && {
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cipher: 'aes-256-cbc',
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passphrase: passphrase
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})
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}
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});
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console.log(`
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🔐 RSA 密钥对生成器
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──────────────────────────────
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输出目录: ${outputDir}
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密钥名称: ${keyName}
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私钥加密: ${useEncryption ? '是' : '否'}
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密钥长度: 2048 位 (平衡安全性与性能)
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`);
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if (useEncryption && !passphrase) {
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console.log('❌ 请设置 KEY_PASSPHRASE 环境变量来加密私钥');
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console.log(' 例如: KEY_PASSPHRASE=your-secret-password node generate-keys.js');
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process.exit(1);
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}
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generator.generateAndSaveKeyPair(outputDir, keyName)
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.then((result) => {
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generator.displayKeyInfo(result.publicKey, result.privateKey);
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console.log('\n🎉 密钥对生成完成！');
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console.log('──────────────────────────────');
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console.log('📁 生成的文件:');
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console.log(` 公钥: ${result.publicKeyFile}`);
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console.log(` 私钥: ${result.privateKeyFile}`);
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console.log(` 配置文件示例: ${outputDir}/`);
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console.log('\n💡 使用建议:');
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console.log(' • 将公钥用于前端加密');
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console.log(' • 将私钥安全地存储在后端');
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console.log(' • 定期轮换密钥（建议每1-2年）');
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console.log(' • 不要将私钥提交到版本控制系统');
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if (!useEncryption) {
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console.log('\n⚠️ 安全警告:');
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console.log(' 当前私钥未加密，建议在生产环境中使用加密私钥');
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console.log(' 重新运行并添加 --encrypt 参数和 KEY_PASSPHRASE 环境变量');
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}
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})
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.catch((error) => {
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console.error('❌ 生成失败:', error.message);
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process.exit(1);
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});
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}
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// 如果直接运行此文件
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if (require.main === module) {
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main();
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}
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module.exports = KeyPairGenerator;
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