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AES 加密解密
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/** | |
* 加密/解密计算 | |
* 将 123456 进行 aes-128-ecb 加密(128bit 等于 16Byte) | |
* created by gang on 2018/11/26 | |
* https://segmentfault.com/a/1190000011041123 | |
*/ | |
const CryptoJS = require('crypto-js'); | |
let key = '033d2ea8e63ac051'; | |
/** | |
* 转换成 16 字节数组 | |
* 当 key 不足 16 字节时需要填充 | |
*/ | |
const aakey = CryptoJS.enc.Utf8.parse(fillKey(key)); // key 小于 16 字节 | |
const aakey = CryptoJS.enc.Utf8.parse(Buffer.from(key)); // key 等于 16 字节 | |
const aakey = CryptoJS.enc.Utf8.parse(key); // 直接转换成 16 字节数组 | |
// 根据 key 的大小自动选择 AES-128/AES-256 | |
const cipher = CryptoJS.AES.encrypt('123456', aakey, { | |
mode: CryptoJS.mode.ECB, | |
padding: CryptoJS.pad.Pkcs7, | |
// ECB 不需要 offset | |
iv: '', | |
}); | |
console.log('cipher', cipher.toString()); | |
// 解密 | |
const decipher = CryptoJS.AES.decrypt(cipher.toString(), aakey, { | |
mode: CryptoJS.mode.ECB, | |
padding: CryptoJS.pad.Pkcs7, | |
iv: '', | |
}); | |
const resultDecipher = CryptoJS.enc.Utf8.stringify(decipher); | |
console.log(resultDecipher); | |
/** | |
* key 不足 16 字节,进行填充 | |
* @param key | |
* @returns {Buffer} | |
*/ | |
function fillKey(key) { | |
const filledKey = Buffer.alloc(128 / 8); | |
const keys = Buffer.from(key); | |
if (keys.length <= filledKey.length) { | |
filledKey.map(function (b, i) { | |
filledKey[i] = keys[i]; | |
}) | |
} | |
return filledKey; | |
} |
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