Cryptography

Cryptography

1605: Bacon’s cipher devised by Sir Francis Bacon (1561–1626).

1854: The Playfair cipher, the first literal digraph substitution cipher, invented by Charles Wheatstone (1802–1875).

1941: Codebreaker Bill Tutte (1917–2002) developed the Cryptanalysis of the Lorenz cipher, which Hitler used to communicate with his generals in World War II.

1973: Clifford Cocks (born 1950) first developed what came to be known as the RSA cipher at GCHQ, approximately three years before it was rediscovered by Rivest, Shamir, and Adleman at MIT.