StatiCrypt

Based on the crypto-js library, StatiCrypt uses AES-256 to encrypt your string with your passphrase in your browser (client side).

Download your encrypted string in a HTML page with a password prompt you can upload anywhere (see example).

You can encrypt a file online at https://robinmoisson.github.io/staticrypt.

HOW IT WORKS

StatiCrypt generates a static, password protected page that can be decrypted in-browser: just send or upload the generated page to a place serving static content (github pages, for example) and you're done: the javascript will prompt users for password, decrypt the page and load your HTML.

Disclaimer TL;DR: if you have extra sensitive banking data you should probably use something else :)

StatiCrypt basically encrypts your page and puts everything with a user-friendly way to use a password in the new file.

AES-256 is state of the art but brute-force/dictionary attacks would be trivial to do at a really fast pace: use a long, unusual passphrase!

The concept is simple but this is a side project - not purporting to be bulletproof, feel free to contribute or report any thought to the GitHub project !

CLI

Staticrypt is available through npm as a CLI, install with npm install -g staticrypt and use as follow:

Usage: staticrypt <input> <password> [options]

Options:
  --help              Show help                                        [boolean]
  --version           Show version number                              [boolean]
  -e, --embed         Whether or not to embed crypto-js in the page (or use an
                      external CDN)                   [boolean] [default: false]
  -o, --output        File name / path for generated encrypted file
                                                        [string] [default: null]
  -t, --title         Title for output HTML page
                                            [string] [default: "Protected Page"]
  -i, --instructions  Special instructions to display to the user.
                                                        [string] [default: null]

Example usages:

• staticrypt test.html mysecretpassword -> creates a test_encrypted.html file
• find . -type f -name "*.html" -exec staticrypt {} mypassword \; -> create encrypted files for all HTML files in your directory

Thanks Aaron Coplan for bringing the CLI to life !