Cracking Codes with Python teaches complete beginners how to program in the Python programming language. The book features the source code to several ciphers and hacking programs for these ciphers. The programs include the Caesar cipher, transposition cipher, simple substitution cipher, multiplicative & affine ciphers, Vigenere cipher, and hacking programs for each of these ciphers. The final chapters cover the modern RSA cipher and public key cryptography.
This is the Zodiac speaking. I am the killer of the 6 to 18 people who Died in the Hurricane last Sept. To Prove this I shall state some facts which only I the police know. I have grown rather angry with the Democrats for their telling lies about me. When I left the Island, AFTER the storm had hit, they had anywhere from 6 to 18 deaths.
Thomas Jefferson is known for a lot of things--writing the Declaration of Independence, founding the University of Virginia, owning hundreds of slaves despite believing in the equality of men--but his place as the "Father of American Cryptography" is not one of them. As a youth in the Virginia colony, Jefferson encrypted letters to a confidante about the woman he loved. While serving as the third president of the newly formed United States, he tried to institute an impossibly difficult cipher for communications about the Louisiana Purchase. He even designed an intricate mechanical system for coding text that was more than a century ahead of its time. Cryptography was no parlor game for the idle classes, but a serious business for revolutionary-era statesmen who, like today's politicians and spies, needed to conduct their business using secure messaging.