CCNA Security Exam Cram (Exam IINS 640-553)

Cryptology Overview

The first thing you need to know is that cryptology and cryptography are not the same things. Cryptology is the overall art and science of making and breaking codes. Cryptography and cryptanalysis are disciplines within cryptology.

Note

The second thing you need to know is that in attempting to define any one term in the field of cryptology, a floodgate of other new terminology, many starting with the letter “c,” is opened!

Here are some basic definitions of words that start with “crypt”:

Cryptography. Code making. It is the art of creating and using simple word or character substitutions to hide the original meaning.

    Cryptanalysis. Code breaking. It is the process of analyzing a cryptographic algorithm for ...