cryptography, n.All

Johnny Cash was a military code breaker for the US Air Force.

American soldiers in the Pacific theater of WWII used passwords with the letter 'L'. Because the Japanese can't distinguish L and R, they would send out words like "Laura" and upon hearing back 'rorra', would "open fire'.

Why is it that only adults have difficulty with childproof bottles?

The UK military recruiter mistook "cryptogamist" (algae expert) for "cryptogramist" and sent an algae expert to join the code breakers; he wasn't so useful until captured German papers arrived water-logged; with his expertise they salvaged them

Nüshu, a woman-only Chinese script, used it to write letters, poetry, and even autobiographies. Woman who knew Nüshu arguably had far more intellectual freedom because men could not read it.

Cryptography is the essential building block of independence for organisations on the internet, just like armies are the essential building blocks of states, because otherwise one state just takes over another.

Cryptography is the ultimate form of non-violent direct action.