deadbolt-app v0.1.0

deadbolt

Encryption -- so simple your mom can do it.

This tool removes all of the complication of encrypting and decrypting files. Simply select or drop in file you'd like to encrypt, enter a password and you're done. To decrypt, just double click on the file and enter a password.

This app should work on Linux, macOS, and Windows, making it incredibly easy to share encrypted files across different platforms.

This script can encrypt any file. To encrypt directories, compress them beforehand (.zip, .tar.gz, etc.)

Here's a quick demo:

Installation

You can install deadbolt in a few ways. Choose the one that best suits you.

Manually Install from GitHub Releases

Download the latest release from the deadbolt GitHub Releases page.

Homebrew Install

$ brew cask install deadbolt

npm Install

$ npm install -g deadbolt

Manually Instill with git

$ git clone https://github.com/alichtman/deadbolt.git
$ cd deadbolt
$ npm run preelectron-pack && npm run dist
$ mv dist/mac/deadbolt.app /Applications/deadbolt.app

Setting deadbolt as Default App for .dbolt Files on macOS

You can set this app as the default app for .dbolt files, which means you'll be able to double-click on .dbolt files to open them with deadbolt for decryption.

You can set this up the first time you double-click on a .dbolt file, or by right-clicking on a .dbolt file, selecting Get Info and changing the default app in the Open With: section.

To do this programmatically, run the following snippet:

# Set deadbolt as default app for .dbolt files
$ defaults write com.apple.LaunchServices LSHandlers -array-add \
"<dict><key>LSHandlerContentTag</key>
<string>dbolt</string><key>LSHandlerContentTagClass</key>
<string>public.filename-extension</string><key>LSHandlerRoleAll</key>
<string>org.alichtman.deadbolt</string></dict>"

# Restart LaunchServices
$ /System/Library/Frameworks/CoreServices.framework/Versions/A/Framework/LaunchServices.framework/Versions/A/Support/lsregister -kill -domain local -domain system -domain user

Technical Details

deadbolt uses crypto.js from the node.js standard library for all cryptographic operations. The AES-256-GCM cipher. The derived key for the cipher is created using pbkdf2Sync, taking in a 64B randomly generated salt and the user generated password, with 10,000 iterations, a 32B key length and SHA512 digest. The authenticity of the data is verified with the authentication tag provided by using GCM.