backendchallenge
sha-256-js
backendchallenge | sha-256-js | |
---|---|---|
1 | 2 | |
0 | 1 | |
- | - | |
3.8 | 0.0 | |
about 3 years ago | over 6 years ago | |
JavaScript | JavaScript | |
- | MIT License |
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backendchallenge
sha-256-js
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How SHA-256 Works Step-by-Step
The wikipedia article spells it out pretty clearly, and the pseudo-code is easily translated into any language, here it is in JavaScript if anyone is interested:
sha-256: https://github.com/jeffallen6767/sha-256-js/blob/master/src/...
Once you understand the concept that most of these algos are simply dividing the input into computer-friendly sized blocks and then stacking and manipulating these bits in 3d space like a rubics cube, then the whole thing becomes a bit easier to understand.
Here's a few more for comparison:
sha-1: https://github.com/jeffallen6767/sha-1-js/blob/master/src/sh...
md5: https://github.com/jeffallen6767/md5-js/blob/master/src/md5....
keccak: https://github.com/jeffallen6767/keccak-p-js/blob/master/src...
side note, I also ended-up implementing the keccak algo in c for open cl usage, because I wanted to see if I could use it in parallel on my graphics card from nodejs ( spoiler: it's indeed possible ):
https://github.com/jeffallen6767/chain/blob/master/src/minin...
Please forgive my terrible programming style, this was done years ago...
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Anyone who would be willing to show their sample repos?
Here's my SHA-256 hashing algo implemented in JavaScript for NodeJS.