nodejs 公私鑰文件加密解密

詳情參考 http://nodejs.cn/api/crypto.html,    http://nodejs.cn/api/buffer.html

 

利用　openssl　生成公鑰私鑰

生成公鑰： openssl genrsa -out privateKey.pem 1024

生成私鑰: openssl rsa -in privateKey.pem -pubout -out publicKey.pem

 

const fs = require('fs')

const privateKey = fs.readFileSync(`privateKey.pem`).toString();

const publicKey = fs.readFileSync(`publicKey.pem`).toString();

const crypto = require('crypto');

const data = "eggsy";

//公鑰加密

const encodeData = crypto.publicEncrypt(publicKey, Buffer.from(data)).toString('base64');

console.log("encode: ", encodeData)

//私鑰解密

const decodeData = crypto.privateDecrypt(privateKey, Buffer.from(encodeData.toString('base64'), 'base64'));

console.log("decode: ", decodeData.toString())

console.log('---------------------------------')

//私鑰加密

const encodeData2 = crypto.privateEncrypt(privateKey, Buffer.from(data)).toString('base64');

console.log("encode2: ", encodeData2)

//公鑰解密

const decodeData2 = crypto.publicDecrypt(publicKey, Buffer.from(encodeData2.toString('base64'), 'base64'));

console.log("decode2: ", decodeData2.toString())