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An extension for archiver to zip with password encryption.

License: MIT License

JavaScript 100.00%

zip archiver nodejs password-encryption

node-archiver-zip-encryptable's Introduction

archiver-zip-encryptable

An extension for archiver to zip with password encryption.

This extension adds some formats to handle encryption to archiver.
Currently this package supports only creating zip with traditional PKWARE encryption.

Install

npm install archiver-zip-encryptable --save

Usage

Call archiver.registerFormat() to register this module to archiver, then archive with password.

var fs = require('fs');
var archiver = require('archiver');

archiver.registerFormat('zip-encryptable', require('archiver-zip-encryptable'));

var output = fs.createWriteStream(__dirname + '/example.zip');

var archive = archiver('zip-encryptable', {
    zlib: { level: 9 },
    forceLocalTime: true,
    password: 'test'
});
archive.pipe(output);

archive.append(Buffer.from('Hello World'), { name: 'test.txt' });
archive.append(Buffer.from('Good Bye'), { name: 'test2.txt' });

archive.finalize();

Credits

yeka/zip - password protected zip, Golang implementation
.ZIP File Format Specification

License

MIT

node-archiver-zip-encryptable's People

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teorge

node-archiver-zip-encryptable's Issues

Zip with password is not working

I tried to use the example to zip files with the password test but can unzip without any password input. Please help to check. Thanks.

Unable to unzip file using buffer with level 0

Hi,

Just wanted to raise an issue we encountered when we were trying to produce an archive with level 0 and a password and appending buffers instead of streams.

This can be reproduced using your test case, we just ran it to produce the zip file and tried to extract it which unfortunately did not work.

  it.only('archives files without compression', function(done) {
    // var tempDir = temp.mkdirSync('out');
    // var output = fs.createWriteStream(tempDir + '/example.zip');
    var output = fs.createWriteStream('./example.zip');
    output.on('close', function() {
      // var content = fs.readFileSync(tempDir + '/example.zip');
      // expect(content.slice(0, 4)).to.eql(Buffer.from([0x50, 0x4b, 0x03, 0x04]));
      done();
    });

    var archive = archiver('zip-encryptable', {
      zlib: { level: 0 },
      forceLocalTime: true,
      comment: 'test comment',
      password: 'test'
    });
    archive.pipe(output);
    archive.append(Buffer.from('Hello World'), { name: 'test.txt' });
    archive.finalize();
  });

Buffer

#HelpNeeded How can I get buffer of zip instead of store file in local drive.

Thanks in advance

require crc32-stream 3.x error.

var CRC32Stream = require('crc32-stream');
var DeflateCRC32Stream = CRC32Stream.DeflateCRC32Stream;

Should be

var CRC32Stream = require('crc32-stream');
var DeflateCRC32Stream = CRC32Stream.DeflateCRC32Stream;
if(CRC32Stream.CRC32Stream)
  CRC32Stream = CRC32Stream.CRC32Stream;

This is my pr: #17

How to use other encryption schemes? Right now PKWARE is the only supported encryption

Crashes with RangeError during streaming to S3

I used archiver to realise a full streaming solution from a storage to a storage (S3).

S3 -> compress -> S3

After I added 'archiver-zip-encryptable' I run into a issue. I tested with small files (e.g 1 mb) everything was fin. With files larger than 20 mb the underlying zip-crypto-stream.js crashes with a RangeError.

The value of "value" is out of range. It must be >= 0 and <= 4294967295. Received 4294967479
RangeError [ERR_OUT_OF_RANGE]: The value of "value" is out of range. It must be >= 0 and <= 4294967295. Received 4294967479
   at checkInt (internal/buffer.js:36:11)
   at writeU_Int32BE (internal/buffer.js:628:3)
   at Buffer.writeUInt32BE (internal/buffer.js:641:10)
   at module.exports.ZipCrypto._updateKeys (/node_modules/archiver-zip-encryptable/lib/zip-crypto.js:106:16)
   at module.exports.ZipCrypto.encrypt (/node_modules/archiver-zip-encryptable/lib/zip-crypto.js:126:10)
   at module.exports.handleStuff (/node_modules/archiver-zip-encryptable/lib/zip-crypto-stream.js:79:24)
   at Object.onceWrapper (events.js:276:13)
   at module.exports.emit (events.js:193:15)
   at module.exports.EventEmitter.emit (domain.js:441:20)
   at endReadableNT (_stream_readable.js:1129:12)
   at process.internalTickCallback (internal/process/next_tick.js:72:19)

Is there any solution to fix that bug ?

<Buffer > / empty file causes error when unzipping

Hey,

Thanks for the awesome library. I have noticed that if I pass in an empty file (eg. blank.txt) and I observe the Buffer for this file (ie. ), when I try to unzip the file produced by the archiver, it does not allow me to unzip.

I tried ensuring that it was not node-archiver which is the issue (ie. not registering archiver-zip-encryptable as the format) and I can unzip and see that the blank.txt is indeed empty.

Can you shed any light on this?

How to decrypt ?

How am I supposed to decrypt it?

how to unzip and decrypt

It is seem easy to zip and encrypt files, but how could I unzip and decrypt them?