NodeJS加密解密及node-rsa加密解密用法详解

cd node-rsa-demo
npm init # 一路回车即可
npm install --save node-rsa

var NodeRSA = require('node-rsa')
var fs = require('fs')
function generator() {
 var key = new NodeRSA({ b: 512 })
 key.setOptions({ encryptionScheme: 'pkcs1' })
 var privatePem = key.exportKey('pkcs1-private-pem')
 var publicPem = key.exportKey('pkcs1-public-pem')
 fs.writeFile('./pem/public.pem', publicPem, (err) => {
 if (err) throw err
 console.log('公钥已保存！')
 })
 fs.writeFile('./pem/private.pem', privatePem, (err) => {
 if (err) throw err
 console.log('私钥已保存！')
 })
}
generator();

function encrypt() {
 fs.readFile('./pem/private.pem', function (err, data) {
 var key = new NodeRSA(data);
 let cipherText = key.encryptPrivate('hello world', 'base64');
 console.log(cipherText);
 });
}
//generator();
encrypt();

function decrypt() {
 fs.readFile('./pem/public.pem', function (err, data) {
 var key = new NodeRSA(data);
 let rawText = key.decryptPublic('fH1aVCUceJYVvt1tZ7WYc1Dh5dVCd952GY5CX283V/wK2229FLgT9WfRNAPMjbTtwL9ghVeYD4Lsi6yM1t4OqA==', 'utf8');
 console.log(rawText);
 });
}
//generator();
//encrypt();
decrypt();

/**
 * Created by linli on 2015/8/25.
 */
var crypto = require('crypto');

//加密
exports.cipher = function(algorithm, key, buf) {
 var encrypted = "";
 var cip = crypto.createCipher(algorithm, key);
 encrypted += cip.update(buf, 'binary', 'hex');
 encrypted += cip.final('hex');
 return encrypted
};

//解密
exports.decipher = function(algorithm, key, encrypted) {
 var decrypted = "";
 var decipher = crypto.createDecipher(algorithm, key);
 decrypted += decipher.update(encrypted, 'hex', 'binary');
 decrypted += decipher.final('binary');
 return decrypted
};