gm-crypt-nodejs


基于javascript和JS的TypedArray的国密加密算法实现。

Implement of Chinese encrypt algorithm in JavaScript and TypedArray.

为了兼容浏览器环境和node.je环境，这里我们使用了TextEncoder和Base64.js。

Here we use TextEncoder and Base64.js for both browser ande node.js environment.

由于使用了TextEncoder，所以暂时不支持Edge。Node.js版本最低为8，建议使用最新的LTS版本。

Because of using TextEncoder， this code cannot run in Edge browser. Node.js‘s version should at least be 8, and the newest LTS version is recommended.

Roadmap

- [x] SM4
- [ ] SM3
- [ ] SM2

Documentation

$3

``
npm install gm-crypt
`

$3

#### Init

`js
const SM4 = require('gm-crypt').sm4

let sm4Config = {
// encrypt/decypt main key; cannot be omitted
key: 'JeF8U9wHFOMfs2Y8',

// optional; can be 'cbc' or 'ecb'
mode: 'cbc', // default

// optional; when use cbc mode, it's necessary
iv: 'UISwD9fW6cFh9SNS', // default is null

// optional: this is the cipher data's type; Can be 'base64' or 'text'
cipherType: 'base64' // default is base64
}

let sm4 = new SM4(sm4Config)
`

#### Encrypt

`js
let plaintext = '中国国密加解密算法'
let ciphertext = sm4.encrypt(plaintext)
// ciphertext's result is 'j/+HgSpv8RZQI2YtSq0L1RnemiSokMm1VvLHSTt245U='
`

#### Decrypt

`js
let ciphertext = 'j/+HgSpv8RZQI2YtSq0L1RnemiSokMm1VvLHSTt245U='
let plaintext = sm4.decrypt(ciphertext)
// plaintext's result is '中国国密加解密算法'
``

License

MIT