Nash-Cipher 
Overview
Nash-Cipher is a simple implementation of the cipher described by John Nash in his letters to the NSA in 1955. These letters have been declassified by the NSA and published on their website in January 2012.
Disclaimer
Obviously, this is a toy. Don't use it.
License
This program is free software. It comes without any warranty, to the extent permitted by applicable law. You can redistribute it and/or modify it under the terms of the Do What The Fuck You Want To Public License, Version 2, as published by Sam Hocevar.
See the Do What The Fuck You Want To Public License for more details.
Contact
kocakosm[@]gmail[dot]com