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Lecture 7: Introduction to Galois Fields for the AES by Christof Paar

Introduction to Cryptography by Christof Paar · lecture · Watch on YouTube

CryptographyUniversity lectures & coursesPure mathematics

What it is

Christof Paar's university lecture introducing Galois fields and finite-field arithmetic as used in AES. It covers the mathematics behind the AES S-box.

Why Hacker News recommends it

Recommended as a moderately formal, clear introduction to finite fields, useful beyond AES.

  • 3 people recommended it
  • 3 different months
  • 1 strong recommendations
  • first 2017, last 2020

What HN commenters said

  1. “is a really excellent explanation of the internals of a number of crytographic algorithms.”

    Explains finite field origins of AES S-Boxes

    opheliate, 2020-12 · Strong recommendation · in “Understanding how AES encryption works”

  2. “I recommend this lecture to understand it in the context of crypto”

    Lecture on Galois fields in crypto context

    ktta, 2017-07 · Recommendation · in “Galois Theory for Beginners (2010) [pdf]”

  3. “this is a pretty good introduction (yes, it's for AES, but the principles are the same)”

    Moderately formal introduction to finite fields

    dnautics, 2019-02 · Recommendation · in “Reed Solomon codes are cool”

Excerpts from Hacker News comments, linked to the originals. Summaries and labels were written by a language model from those comments.

Topics: galois fields, aes, cryptography, finite fields, s-box

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