2014 年国务院办公厅就颁发了《国务院办公厅转发密码局等部门关于金融领域密码应用指导意见》，指出在我国涉及到金融领域信息安全的产品和系统要自主可控，在金融领域使用国产加密标准是机构走向合规化的重要一步。常用的国密算法包括：SM2、SM3、SM4等。
特性
- 兼容 Node.js & Browsers 环境
- 支持多种数据类型
String&ArrayBuffer&Buffer - 支持多种编码
hex&utf8&base64
安装
npm install gm-crypto
yarn add gm-crypto
快速开始
浏览器端写法调整为
import { SM2, SM3, SM4 } from 'gm-crypto'
SM2
const { SM2 } = require('gm-crypto')
const { publicKey, privateKey } = SM2.generateKeyPair()
const originalData = 'SM2 椭圆曲线公钥密码算法'
const encryptedData = SM2.encrypt(originalData, publicKey, {
inputEncoding: 'utf8',
outputEncoding: 'base64'
})
const decryptedData = SM2.decrypt(encryptedData, privateKey, {
inputEncoding: 'base64',
outputEncoding: 'utf8'
})
SM3
const { SM3 } = require('gm-crypto')
console.log(SM3.digest('abc'))
console.log(SM3.digest('YWJj', 'base64'))
console.log(SM3.digest('616263', 'hex', 'base64'))
SM4
const { SM4 } = require('gm-crypto')
const key = '0123456789abcdeffedcba9876543210' // Any string of 32 hexadecimal digits
const originalData = 'SM4 国标对称加密'
/**
* Block cipher modes:
* - ECB: electronic codebook
* - CBC: cipher block chaining
*/
let encryptedData, decryptedData
// ECB
encryptedData = SM4.encrypt(originalData, key, {
inputEncoding: 'utf8',
outputEncoding: 'base64'
})
decryptedData = SM4.decrypt(encryptedData, key, {
inputEncoding: 'base64',
outputEncoding: 'utf8'
})
// CBC
const iv = '0123456789abcdeffedcba9876543210' // Initialization vector(any string of 32 hexadecimal digits)
encryptedData = SM4.encrypt(originalData, key, {
iv,
mode: SM2.constants.CBC,
inputEncoding: 'utf8',
outputEncoding: 'hex'
})
decryptedData = SM4.decrypt(encryptedData, key, {
iv,
mode: SM2.constants.CBC,
inputEncoding: 'hex',
outputEncoding: 'utf8'
})
