romance tale search / 04.09.2020

Handbook encryption practices, making use of codebooks, page and quantity substitutions, and transpositions are available in writings for the Spartans, Julius Caesar, Thomas Jefferson, and Abraham Lincoln.

Cryptography has often been found in wartime, and critical victories (such as that of the usa in the Battle of Midway in World War II) depended on effective analysis (codebreaking) of this German encryption method.

There are a couple of forms of cryptographic systems--secret key and public key.