[Cryptography] National Navajo Code Talkers Day

[Dave Horsfall]

Today is National Navajo Code Talkers Day; it was used for crypto comms in 
WW-2, as only a few tribes could speak it.  There were no words for modern 
objects, so "shark" was used for "destroyer" etc, thereby obfuscating it 
further, and clipped phrases meant untrained speakers would not understand 
it.

-- 
Dave Horsfall DTM (VK2KFU)  "Those who don't understand security will suffer."