封装egg加密

封装Crypto作为egg.js 专用加密函数

1. 安装 npm install crypto --save

2. 配置文件配置 config / config.default.js

   config.crypto = {
    secret:  'ghdgw@45njashdaksh2!#@3nxjdas_*672'
   };

3. 扩展application对象 app / extend / application.js

   
   const jwt = require('jsonwebtoken');
   const crypto = require('crypto');
   module.exports = {
    get jwt() {
        return jwt;
    },
   
    cryptoHmac(param) {
        const hmac = crypto.createHash("sha256",this.config.crypto.secret);
        hmac.update(param);
        return hmac.digest("hex");
    }

}