Ad-hoc encrypt and decrypt data behind multiple layers of protection via OpenSSL or GPG

Rätsel is German for Enigma. Rätsel is an encryption tool that can take in messages, encrypt them for transmission, then decrypt messages we get from others.

Encrypt and decrypt ActiveRecord models' attributes. **This is not a replacement for `has_secure_password`**

Xoreen. Encrypt and Decrypt Every File Type Using Xor Gate.

A ruby implementation of the Caeser Cipher protocol that encrypts alphabetic characters using a simple uniform position shift algorithm based on positive integer keys.