A 1944 Enigma cipher machine has auctioned for £305,200 in London. The M4 machine was in wonderful condition. Read more here.

Some ciphers have simple keys, others, complex ones. The key for a cipher used by Augustus Caesar, some 2,000 years ago, was simple enough: The receiver just had to shift the alphabet one position.

The cipher was in French in my first version, I changed the examples to pick them in GeekDad challenge cipher. Here was the challenge : ...