js国密sm2与sm4算法混合加密

sm2与sm4的加密原理可以查看根目录的doc文件夹，关于sm2与sm4的混合加密算法如下：

Doc：基于国密 SM4和 SM2的混合密码算法研究与实现

Data encryption process：

加密过程明文通过sm4（ecb）模式进行加密，再通过sm2（c1c2c3）加密sm4的密钥。

Instructions：

You need install package "encrytion-tools" to project.

npm i encrytion-tools --save or yarn add encrytion-tools --save

``javascript
// the example for crypt and encrypt by SM2, but SM4 and mix‘s like it.
// 1.import functional like "sm2"、"sm4" in "mixSm2andSM4" by npm package
import {sm2,sm4,mixCrypt} from 'encrytion-tools'

//-------sm2---------
// 2.the step paly construct crpt or encrypt class
const _sm2 = new sm2()
// encrypt
const result = _sm2.decrypt(publicKey,value)
// crypt
const result = _sm2.encrypt(publickey,privateKey,value)

// -------sm4
...
// -------mix
...

``

- [x] SM2 encrypt
- [x] SM4 encrypt
- [x] SM2 and SM4 mix encrypt
- [ ] SM2 decrypt
- [ ] SM2 decrypt
- [ ] SM2 and SM4 mix decrypt