js aes 128 ecb

const crypto = require('crypto');

// 密钥和明文
const key = '0123456789abcdef'; // 16字节（128位）
const plaintext = 'Hello, World!';

// 创建加密器
const cipher = crypto.createCipheriv('aes-128-ecb', key, null);

// 加密
let encrypted = cipher.update(plaintext, 'utf8', 'hex');
encrypted += cipher.final('hex');

console.log('Encrypted:', encrypted);

// 创建解密器
const decipher = crypto.createDecipheriv('aes-128-ecb', key, null);

// 解密
let decrypted = decipher.update(encrypted, 'hex', 'utf8');
decrypted += decipher.final('utf8');

console.log('Decrypted:', decrypted);

const crypto = require('crypto');

function pad(text) {
  const blocksize = 16;
  const padding = blocksize - (text.length % blocksize);
  return text + String.fromCharCode(padding).repeat(padding);
}

function unpad(text) {
  const padding = text.charCodeAt(text.length - 1);
  return text.slice(0, -padding);
}

const key = '0123456789abcdef';
const plaintext = 'Hello, World!';

const paddedPlaintext = pad(plaintext);

const cipher = crypto.createCipheriv('aes-128-ecb', key, null);
let encrypted = cipher.update(paddedPlaintext, 'utf8', 'hex');
encrypted += cipher.final('hex');

console.log('Encrypted:', encrypted);

const decipher = crypto.createDecipheriv('aes-128-ecb', key, null);
let decrypted = decipher.update(encrypted, 'hex', 'utf8');
decrypted += decipher.final('utf8');

console.log('Decrypted:', unpad(decrypted));