故事背景

最近對接了一個第三方支付，冠名PKU的支付專案，用的加密演算法是：DESede/CBC/PKCS5Padding

這個演算法真的是坑爹了，網上搜索了一堆只有java版本是正常的，nodejs版本的各種問題，我了個乖乖，硬著頭皮調了大半天，踩了N個坑，真的是無語了。talk is cheap，上程式碼！

核心程式碼

const crypto = require('crypto');

/**
 * base64編碼
 * @param text
 * @returns {Buffer}
 */
function base64(text) {
    return Buffer.from(text, "base64");
};

/**
 * 加密
 *
 * @param text
 * @param secretKey
 * @returns {string}
 */
function encode(text, secretKey) {
    secretKey = base64(secretKey);
    const cipher = crypto.createCipheriv('des-ede3-cbc', secretKey, Buffer.alloc(8));
    const encrypted = cipher.update(text, 'utf8', 'base64');

    return encrypted + cipher.final('base64');
};


/**
 * 解密
 * @param encryptedBase64
 * @param secretKey
 * @returns {string}
 */
function decode(encryptedBase64, secretKey) {
    secretKey = base64(secretKey);
    const decipher = crypto.createDecipheriv('des-ede3-cbc', secretKey, Buffer.alloc(8));
    let decrypted = decipher.update(encryptedBase64, 'base64', 'utf8');
    decrypted += decipher.final('utf8');
    return decrypted;
};
 

執行結果

我們來執行一下

//待加密josn
let json = `{"name":"chenqionghe","cn":"雪山飛豬","content":"no pain no gain, light weight baby"}`;
//金鑰
let key = 'mdgIaBrQjIKU30IIEpZS1dsFNOLX73nQ';
//加密內容
let encrypted = encode(json, key);
console.log(encrypted);

//解密
console.log(decode(encrypted, key));
 

輸出

EPvugsT71sqeIDPuVuP0mx+cotWTJ3Bt+k5vIConcQmdyjIgF3GtQLSL+yCyxTfRQIjBFmkq7bQn6Nh0xOjMSm3C23AM1m3QwZLFQHH2t41X/4YyvCnv3YFtgDu+SosO
{"name":"chenqionghe","cn":"雪山飛豬","content":"no pain no gain, light weight baby"}

以上內容為chenqionghe踩坑封裝，感謝lidong童鞋的傾情演出，轉載請申請地址