Там же, рядом.

[thesz]

Про шифр Навахо, Тоже обширная цитата:The reason Navajo Code Talkers were succesful wasn't because the scheme was particularly advanced. In fact, it would have been computationally trivial to break. However the messages relayed were only ever "tactical" in nature; i.e. communications in the field, of use during a fight, but old news in about 10

Comments

[mihai]

И добавлю: http://xkcd.com/c257.html

[thesz]

Угум. ;)