Emacs bindings for libsodium

This module is in alpha, works only in Linux with Emacs 25+ and only exposes a high level interface to the crypto_box API.

Install

Run make and ensure that sodium.el is somewhere in your load path. Then

(require 'sodium)

If you use Borg, make sure to execute make in you .gitmodules build-step like this

[submodule "sodium"]
	path = lib/sodium
	url = git@github.com:dakra/sodium.el.git
	build-step = make

Usage

You can see sodium-box-demo.el for a simple example: (Run the box-demo with make box-demo)

(require 'sodium)

(let* ((nonce  (sodium-box-make-nonce))
       (bob    (sodium-box-keypair))
       (bob-pk (cdr (assoc 'pk bob)))
       (bob-sk (cdr (assoc 'sk bob)))
       (alice    (sodium-box-keypair))
       (alice-pk (cdr (assoc 'pk alice)))
       (alice-sk (cdr (assoc 'sk alice)))
       (msg "Hello World!")
       encrypted decrypted)
  (message "Encrypting message '%s'" msg)
  (setq encrypted (sodium-box msg nonce bob-pk alice-sk))
  (message "Decrypt message '%s'" encrypted)
  (setq decrypted (sodium-box-open encrypted nonce alice-pk bob-sk))
  (message "Decrypted message '%s'" decrypted))

Thanks

@jedisct1 for libsodium

Emacs module code was taken from/inspired by:

• https://phst.eu/emacs-modules
• https://github.com/skeeto/joymacs
• Looking at module code from https://github.com/syohex
• Emacs libgit2 bindings https://github.com/magit/libegit2
• http://diobla.info/blog-archive/modules-tut.html
• https://github.com/jkitchin/emacs-modules