Handbook encryption techniques, making use of codebooks, letter and quantity substitutions, and transpositions are available in writings associated with the Spartans, Julius Caesar, Thomas Jefferson, and Abraham Lincoln.

Handbook encryption techniques, making use of codebooks, letter and quantity substitutions, and transpositions are available in writings associated with the Spartans, Julius Caesar, Thomas Jefferson, and Abraham Lincoln.

Cryptography has often been found in wartime, and critical victories (such as compared to america 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. In secret key systems, a secret key–a specifically plumped for number–when coupled with a group of mathematical operations, both “scrambles” and “unscrambles” concealed information. Continue reading