rot13
/rot ther'teen/ [Usenet: from "rotate alphabet 13 places"], v.
The simple Caesar-cypher
encryption that replaces each English letter with the one 13 places forward or back along
the alphabet, so that "The butler did it!" becomes "Gur ohgyre qvq vg!" Most Usenet news
reading and posting programs include a rot13 feature. It is used to enclose the text
in a sealed wrapper that the reader must choose to open - e.g. for posting things that
might offend some readers, or spoilers. A major advantage of rot13 over rot(N) for other
N is that it is self-inverse, so the same code can be used for encoding and decoding.
Examples:
| rot13 Glenn Carr |
| rot13 Tyraa Pnee |
Glenn Carr
Functions
Copyright (c) 2002 David Bau
Distributed under the terms of the
GNU Public License, Version 2 (http://www.gnu.org/copyleft/gpl.txt)