GyuHa.com

express를 이용한 첨부파일 암호화 및 S3 업로드

1. router POST 업로드 호출 후


var s3 = require('../util/awsFileUpload')

router.post('/fileupload', function(req, res, next){
s3.encUpload(req, res, function(err, result){
if(err){
res.send('error').end();
} else {
res.send('success image file').end();
}
})

});


awsFileUpload.js 파일

let multer = require('multer')
var storage = multer.memoryStorage()
const upload = multer({storage: storage, limits: { fileSize: 10 * 1024 * 1024 }})
let AWS = require('aws-sdk')
var cryptoFile = require('../util/crypto')

AWS.config.loadFromPath(__dirname + '/../config/awsconfig.json')
let s3 = new AWS.S3()

var s3Upload = {

encUpload : function(req, res, callback) {

var uploads = upload.single('uploadfile');
uploads(req, res, function(err){
var file = req.file;
file.buffer = cryptoFile.buffercipher(file.buffer);
var fileName = new Date().valueOf() +".enc";
var params = {
Bucket: '버킷명',
Key: fileName,
Body: file.buffer,
ACL: 'public-read', // your permisions
};
s3.putObject(params, function(err, data) {
if (err) console.log(err, err.stack); // an error occurred
else console.log(data); // successful response
callback(err, data);
});

});
}
}
module.exports = s3Upload


crypto.js

var crypto = require('crypto')
var multer = require('multer')
const fs = require('fs');

var key = new Buffer('암호화키', 'hex');

const cipher = crypto.createCipher('aes-256-cbc', key)
const decipher = crypto.createDecipher('aes-256-cbc', key)

var cryptoUtil = {

    buffercipher: function(bufferData) {
        var base64 = bufferData.toString('base64')
        var enData = cipher.update(base64);
        return enData;
    },

    s3decipher: function(data) {
        var binary = new Buffer(data,'base64')
        var decrypted = decipher.update(binary, 'binary', 'utf8')

        return decrypted;
    },

}

module.exports = cryptoUtil;


awsconfig.json  S3 키발급

{
"accessKeyId": "accessKey",
"secretAccessKey": "secret키",
"region": "지역"
}


Comment +0