The video loads from YouTube only after you press Play.
How Does SHA-256 Work?
A 23-minute video by learnmeabitcoin about cryptographic mechanisms, on the Security shelf. It was posted to r/cryptography as “An incredibly detailed step-through the SHA-256 algorithm”. It is pitched at intermediate level.
learnmeabitcoin, Video, 23 min, 2020, on the Security shelf
Builds SHA-256 from its primitive bit operations, functions, constants and message-processing steps.
Study notes
Intermediate, How it works inside. Step 6 of 7 in Information, error and trust
Helpful first
- Binary numbers
- Bitwise operations
What it builds
- Break a hash computation into primitive operations.
- Track constants and message words through the computation.
- Separate understanding the steps from proving cryptographic security.
Useful moments
Check yourself: Why is seeing every algorithm step still different from proving that the hash is secure?
Notes are based on metadata, Reddit context and selected English caption passages. They are not a review of every claim in the video.
Builds SHA-256 from its primitive bit operations, functions, constants and message-processing steps.
About this record
The author explicitly states the video explains algorithm operations, not the reasons for the cryptographic design or a security proof.
