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

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

Cryptography has often been utilized in wartime, and critical victories (such as compared to america in the Battle of Midway in World War II) depended on successful analysis (codebreaking) regarding the German encryption method.

There are a couple of types of cryptographic systems–secret key and key that is public. A secret key–a specially chosen number–when combined with a set of mathematical operations, both “scrambles” and “unscrambles” hidden data in secret key systems. One of the keys is shared among consenting users. In public key systems, each individual has two numeric keys–one public and something personal. Continue reading Handbook encryption methods, making use of codebooks, page and quantity substitutions, and transpositions are located in writings associated with the Spartans, Julius Caesar, Thomas Jefferson, and Abraham Lincoln.