Cryptography Reference
In-Depth Information
Chapter 1
Introduction to Cryptography and Data Security
This section will introduce the most important terms of modern cryptology and will
teach an important lesson about proprietary vs. openly known algorithms. We will
also introduce modular arithmetic which is also of major importance in public-key
cryptography.
In this chapter you will learn:
The general rules of cryptography
Key lengths for short-, medium- and long-term security
The difference between different types of attacks against ciphers
A few historical ciphers, and on the way we will learn about modular arithmetic,
which is of major importance for modern cryptography as well
Why one should only use well-established encryption algorithms
