CryptoTutorials: Part 1

July 8, 2011

By Israel Torres, a hacker at large with interests in the hacking realm and an author of crypto challenge: http://hakin9.israeltorres.org

CryptoTutorials is a new Hakin9 multi-part series focusing on the aspects cryptology, cryptography, cryptanalysis and steganography. Each short and easy to digest tutorial will cover ideas, concepts and implementation from known cryptographic history to covert communications used today. Part 1 of this series starts the reader with the basic idea in what cryptography is and provides a few simple examples that the reader can try and expand on.

PART 1 Cryptography Fundamentals: What you see isn’t what you get

In this first tutorial we’ll go over many of the fundamental erms as they are defined by various sources. Crypto basically means hidden and ology basically means the study of; put them together (cryptology) and it means he study of things that are hidden. Replace ology with graphy (cryptography) and now you mean things that are hidden in some form of writing. Replace graphy with anlysis (cryptanalysis) and now you mean things hat are analyzed to be revealed. Another study in a similar realm of hidden messages is steganography (steganos basically means covered) and more so deals with medium concealment (as in what is used for concealment).

What you will learn…
crypto fundamentals, abstraction, how to keep a secret

What you should know…
basic programming for programmatic implementation



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