AES-128-CBC 加密和解密

// aes-utils.js

import CryptoJS from 'crypto-js';

/**

 * AES-128-CBC 加密

 * @param {string} plaintext 待加密的明文数据

 * @param {string} key 密钥字符串 (必须是 16 个字符)

 * @param {string} iv 初始化向量 (必须是 16 个字符)

 * @returns {string} 加密后的密文

 */

export function encrypt(plaintext, key, iv) {

  const keyBytes = CryptoJS.enc.Utf8.parse(key);

  const ivBytes = CryptoJS.enc.Utf8.parse(iv);

  const ciphertext = CryptoJS.AES.encrypt(plaintext, keyBytes, {

    iv: ivBytes,

    mode: CryptoJS.mode.CBC,

    padding: CryptoJS.pad.Pkcs7

  }).toString();

  return ciphertext;

}

/**

 * AES-128-CBC 解密

 * @param {string} ciphertext 待解密的密文数据

 * @param {string} key 密钥字符串 (必须是 16 个字符)

 * @param {string} iv 初始化向量 (必须是 16 个字符)

 * @returns {string} 解密后的明文

 */

export function decrypt(ciphertext, key, iv) {

  const keyBytes = CryptoJS.enc.Utf8.parse(key);

  const ivBytes = CryptoJS.enc.Utf8.parse(iv);

  const bytes = CryptoJS.AES.decrypt(ciphertext, keyBytes, {

    iv: ivBytes,

    mode: CryptoJS.mode.CBC,

    padding: CryptoJS.pad.Pkcs7

  });

  const plaintext = bytes.toString(CryptoJS.enc.Utf8);

  return plaintext;

}

const plaintext = '你好, 世界!';

const key = '0123456789abcdef';

const iv = 'fedcba9876543210';

const ciphertext = encrypt(plaintext, key, iv);

console.log('密文:', ciphertext);

const decryptedText = decrypt(ciphertext, key, iv);

console.log('解密后的明文:', decryptedText);