用js加密本地文件怎么打开

const crypto = require('crypto');
const fs = require('fs');

// 密钥和初始化向量（IV）
const key = crypto.randomBytes(32);
const iv = crypto.randomBytes(16);

// 创建加密器
const cipher = crypto.createCipheriv('aes-256-cbc', key, iv);

// 读取文件
const inputFilePath = 'path/to/your/file.txt';
const outputFilePath = 'path/to/your/encrypted-file.enc';

const inputStream = fs.createReadStream(inputFilePath);
const outputStream = fs.createWriteStream(outputFilePath);

inputStream.pipe(cipher).pipe(outputStream);

outputStream.on('finish', () => {
  console.log('文件加密完成');
  // 将密钥和IV保存到安全的地方
  fs.writeFileSync('path/to/your/key.bin', key);
  fs.writeFileSync('path/to/your/iv.bin', iv);
});

const crypto = require('crypto');
const fs = require('fs');

// 读取密钥和IV
const key = fs.readFileSync('path/to/your/key.bin');
const iv = fs.readFileSync('path/to/your/iv.bin');

// 创建解密器
const decipher = crypto.createDecipheriv('aes-256-cbc', key, iv);

// 读取加密文件
const encryptedFilePath = 'path/to/your/encrypted-file.enc';
const decryptedFilePath = 'path/to/your/decrypted-file.txt';

const encryptedInputStream = fs.createReadStream(encryptedFilePath);
const decryptedOutputStream = fs.createWriteStream(decryptedFilePath);

encryptedInputStream.pipe(decipher).pipe(decryptedOutputStream);

decryptedOutputStream.on('finish', () => {
  console.log('文件解密完成');
});