Generate a password protected ZIP file in node.js

Question

I need to create a ZIP file in node.js, protected by a password.

I am using \"node-zip\" module, that unfortunately doesn\'t support password protection:

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Answer 1

I had the same issue and couldn't find the package to do it, so I've written one on my own, as a plugin to archiver package. Pure JS, no external zip software needed.

Here it is - https://www.npmjs.com/package/archiver-zip-encrypted. Supports both legacy Zip 2.0 encryption and AES-256 encryption from WinZip.

Answer 2

The solution I'm using (I don't a better way to do it) is:

var contenido1 = 'contenido super secreto';
var contenido2 = 'otro contenido';
var password = 'pass';
var nombreFichero = 'fichero'

var nodezip = new require('node-zip')();
var fs = require("fs");
nodezip.file('test1.txt', contenido1);
nodezip.file('test2.txt', contenido2);
var data = nodezip.generate({base64:false,compression:'DEFLATE'});
fs.writeFile(nombreFichero + '.zip', data, 'binary');

var exec = require('child_process').exec,
    child;

child = exec('unzip ' + nombreFichero + '.zip -d ' + nombreFichero +
             ' && zip -junk-paths --password ' + password + ' ' + nombreFichero + '-p.zip ' + nombreFichero + '/*' +
             ' && rm -rf ' + nombreFichero + ' && rm -f ' + nombreFichero + '.zip',
  function (error, stdout, stderr) {
    console.log('stdout: ' + stdout);
    console.log('stderr: ' + stderr);
    if (error !== null) {
      console.log('exec error: ' + error);
    }
});

It generates a temporary zip file (without password), and then with several commands, upzip, zip with password and remove temporary files.

Answer 3

If you work on linux then you can do it with the help of zip (command line utility in most linux distributions). Just include the following in you app.

spawn = require('child_process').spawn;
zip = spawn('zip',['-P', 'password' , 'archive.zip', 'complete path to archive file']);
zip .on('exit', function(code) {
...// Do something with zipfile archive.zip
...// which will be in same location as file/folder given
});

If you want to zip a folder just put another argument '-r', before the folder path instead of file path.

Remember this spawns separate thread, from main process, so it is non blocking. For more info on child_process look here http://nodejs.org/api/child_process.html

Answer 4

For anyone who ends up here like I did, I tried several packages in node but ended up using this one: https://www.npmjs.com/package/minizip-asm.js

It supports passwords (using AES) and is really easy to use. I'm surprised it doesn't have that many downloads given that it's the only one I found supporting passwords.