Cryptography and Network Security Principles and Practice, 8th Edition - Pearson

CHAPTER 6

Advanced Encryption Standard

 

6.1 Finite Field Arithmetic

 

6.2 AES Structure

General Structure

Detailed Structure

 

6.3 AES Transformation Functions

Substitute Bytes Transformation

ShiftRows Transformation

MixColumns Transformation

AddRoundKey Transformation

 

6.4 AES Key Expansion

Key Expansion Algorithm

Rationale

 

6.5 An AES Example

Results

Avalanche Effect

 

6.6 AES Implementation

Equivalent Inverse Cipher

Implementation Aspects

 

6.7 Key Terms, Review Questions, and Problems

 

Appendix 6A Polynomials with Coefficients in GF(2⁸)

 

LEARNING OBJECTIVES

After studying this chapter, you should be able to:

• ◆ Present an overview of the general structure of Advanced Encryption Standard (AES).
• ◆ Understand the four transformations ...