Encryption and Hash Algorithms

Paper Summary:

Discusses differences between a code and a cipher. Requirements of each; how each works. History of encryption. Enigma machine of World War II. Pre-computer encrption. Development of computer program to encrypt data. Function of a "hash" (a number generated from text & smaller than the text itself). Privacy issues. Future of algorithms.

From the Paper:

"Encryption and Hash Algorithms
Introduction
Stephen Levy (2001), reporting on the latest "unbreakable code" begins his report by quoting Edgar Allan Poe. "It may roundly be asserted that human ingenuity cannot concoct a cipher which human ingenuity cannot resolve" (Levy, 2001, 45). This article was selected to lead off this discussion of encryption because of two elements of confusion.
First, the headline read "An Unbreakable Code?" and the article was about enciphering and deciphering, also called "encryption" and ?decryption.? This is a common, and often-repeated mistake, one which can confuse the very field of study. A "code" is not a "cipher" anymore than a "tennis ball" is a ?cabbage.?


A code is a..."

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