Dictionary of Computer and Internet Terms: rot13 (rotate 13)
rot13 (rotate 13)
a type of encryption commonly used on the Internet to conceal answers to puzzles and the like. To encode a message, the first 13 letters of the alphabet are swapped with the last 13. Performing the same swap again decodes the message. This is not a secure code, of course, but it provides a way to make things temporarily unreadable.
Qba'g lbh jbaqre jung guvf fnlf?
