sec-utils

https://sinasabet81.github.io/sec-utils/

Obligatory Disclaimer

Please don't trust this tool I built for fun with any sensitive usecases.

Motivation

I found myself frequently wanting to generate passphrases composed of plain english words with a variety of different options; I also wanted to see if it was possible to encrypt and decrypt arbitrary files with these generated passwords in a web browser. I decided to build these two functions into a webpage for easy use and access.

Passphrase generator

• generates human-readable passphrase by randomly sampling from a corpus of english words
• options for including numbers, symbols, caps, number of words, and separator
• copy to clipboard
• randomness provided by the web crypto api

File Encrypter

• encrypt/decrypt and authenticate arbitrary files using keybase's triplesec scheme
  • entails AES for encryption, HMAC for authentication
  • see the triplesec docs for more info on encryption and decryption

File Encrypter Demo:

• Link to full sized video
• Demo shows encryption and decryption of an image file
  • image loads/opens before encrypting
  • after encrypting, image file doesn't open
  • after decrypted encrypted version of the file, it opens again showing the same file

Development

This project was bootstrapped with create-react-app; check the user guide (also a copy in this repo) for more info.

Commits to master are auto-deployed via CircleCI.

Commands

• yarn start: spin up a test server with hot reloading at http://localhost:3000/
• yarn build: build into ./build directory
• yarn deploy: build and deploy with gh-pages

Notable packages

• create-react-app for boilerplate and config
• styped-components for css-in-js
• triplesec for encryption
• gh-pages for deployment to Github pages