node.js 实现国密算法

node.js 实现国密算法

搭建node环境

node.js下载

官网下载：http://nodejs.cn/download/

解压

tar -xvf node-v18.12.1-linux-x64.tar.xz

配环境变量

vi /etc/profile

最后加上这句话：export PATH=$PATH:/usr/local/node/bin

让新加的配置生效：source /etc/profile

配软连接

相当于全局变量，在任何文件夹都能查看版本信息

ln -s /usr/local/node/bin/node /usr/local/bin/
ln -s /usr/local/node/bin/npm /usr/local/bin/

成功搭建node.js环境

代码实现

通过gm-crypto密码算法库实现国密算法

安装gm-crypto

npm install gm-crypto

SM2

const { SM2 } = require('gm-crypto')

const { publicKey, privateKey } = SM2.generateKeyPair()
const originalData = '20201327ljm'

const encryptedData = SM2.encrypt(originalData, publicKey, {
  inputEncoding: 'utf8',
  outputEncoding: 'base64'
})
console.log(encryptedData)

const decryptedData = SM2.decrypt(encryptedData, privateKey, {
  inputEncoding: 'base64',
  outputEncoding: 'utf8'
})
console.log(decryptedData)

SM3

const { SM3 } = require('gm-crypto')

console.log(SM3.digest('20201327'))
console.log(SM3.digest('ljm', 'base64'))
console.log(SM3.digest('415', 'hex', 'base64'))

SM4

const { SM4 } = require('gm-crypto')

const key = '0123456789abcdeffedcba9876543210' // Any string of 32 hexadecimal digits
const originalData = '20201327ljm'

/**
 * Block cipher modes:
 * - ECB: electronic codebook
 * - CBC: cipher block chaining
 */

let encryptedData, decryptedData

// ECB
encryptedData = SM4.encrypt(originalData, key, {
  inputEncoding: 'utf8',
  outputEncoding: 'base64'
})
console.log(encryptedData)

decryptedData = SM4.decrypt(encryptedData, key, {
  inputEncoding: 'base64',
  outputEncoding: 'utf8'
})
console.log(decryptedData)


console.log('\n')


// CBC
const iv = '0123456789abcdeffedcba9876543210' // Initialization vector(any string of 32 hexadecimal digits)
encryptedData = SM4.encrypt(originalData, key, {
  iv,
  mode: SM4.constants.CBC,
  inputEncoding: 'utf8',
  outputEncoding: 'hex'
})
console.log(encryptedData)

decryptedData = SM4.decrypt(encryptedData, key, {
  iv,
  mode: SM4.constants.CBC,
  inputEncoding: 'hex',
  outputEncoding: 'utf8'
})
console.log(decryptedData)

通过sm-crypto密码算法库实现国密算法

安装 sm-crypto

npm install --save miniprogram-sm-crypto

sm2

const sm2 = require("miniprogram-sm-crypto").sm2;

let keypair = sm2.generateKeyPairHex();

publicKey = keypair.publicKey; // 公钥
privateKey = keypair.privateKey; // 私钥

const cipherMode = 1; // 1 - C1C3C2，0 - C1C2C3，默认为1

let encryptData = sm2.doEncrypt('20201327', publicKey, cipherMode); // 加密结果
console.log(encryptData)
let decryptData = sm2.doDecrypt(encryptData, privateKey, cipherMode); // 解密结果
console.log(decryptData)

sm3

const sm3 = require("miniprogram-sm-crypto").sm3;

let hashData = sm3("20201327"); // 杂凑
console.log(hashData)

sm4

const sm4 = require("miniprogram-sm-crypto").sm4;
const key = [0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10];

let encryptData = sm4.encrypt("20201327", key); // 加密
console.log(encryptData)

let decryptData = sm4.decrypt(encrytData, key); // 解密

console.log(decryptData)