La NSA (service de cryptologie du gouvernement US) a créé un site
ludique de tests pour initier les bambins (US, je présume) à la
Petit paragraphe de circonstance:
You can also learn about the National Security Agency/Central
Security Service - they’re America’s real codemakers and codebreakers.
Our Nation’s leaders and warfighters count on the technology and
information they get from NSA/CSS to get their jobs done. Without
NSA/CSS, they wouldn’t be able to talk to one another without the bad
guys listening and they wouldn’t be able to figure out what the bad
guys were planning.