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How Does SHA-256 Work?

learnmeabitcoin · explainer · Watch on YouTube

Cryptography

What it is

A step-by-step animated explanation of how SHA-256 works, from padding and message schedule to the compression function and final hash, with source code for the animations.

Why Hacker News recommends it

Commenters call it clear enough to implement the algorithm from, and teachers use it in courses.

  • 3 people recommended it
  • 3 different months
  • 1 strong recommendations
  • first 2020, last 2022

What HN commenters said

  1. “I found this video to be an excellent explanation and sufficient to implement the algorithm”

    Excellent explanation, enough to implement the algorithm

    7373737373, 2022-03 · Strong recommendation · in “The SHA-256 Project: learn how hash functions work by implementing one yourself”

  2. “Here's the author doing an in-depth explanation of how SHA-256 works using this code”

    In-depth author explanation of how SHA-256 works

    1_player, 2020-05 · Recommendation · in “Show HN: SHA-256 Animation”

  3. “When we taught SHA-256 last semester, we linked to this YouTube video”

    Used in teaching SHA-256 to a class

    oconnor663, 2022-02 · Recommendation · in “Show HN: SHA-256 explained step-by-step visually”

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

Topics: sha-256, cryptography, hash functions, bitcoin, animation

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