: McGraw Hill Education (the official publisher) provides official e-book versions and supplementary materials. Provide practice problems related to network security?
AES is confusing. Pass 1: Read the text explanation. Pass 2: Look only at the diagrams (the PDF’s strength). The visual flow of the 10 rounds is worth a thousand words. Cryptography And Network Security By Atul Kahate.pdf
The core of Kahate’s text, and indeed the core of the discipline, is the distinction between symmetric and asymmetric cryptography. Kahate dedicates substantial portions of the book to dissecting algorithms like DES (Data Encryption Standard), AES, and Blowfish. His explanation of the transition from DES to AES is particularly poignant, serving as a case study in how increasing computational power necessitates evolving security standards. He explains the mechanics of substitution and permutation—confusion and diffusion—in a way that transforms abstract mathematical operations into understandable mechanical processes. : McGraw Hill Education (the official publisher) provides
These are gold for revision.