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gm-crypt's Introduction

gm-crypt-nodejs

在原有项目的基础上兼容了小程序生态,具体修改可以看git提交记录📝。

JavaScript Style GuideLicense: MIT

基于javascriptTypedArray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TextEncoderBase64.js

Here we use TextEncoder and Base64.js for both browser and 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

  • SM4
  • SM3
  • SM2

Documentation

Install

npm install gm-crypt

SM4

Init

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

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

Decrypt

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

License

MIT

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