Show HN: Omnihash, a multi-hashing utility

github.com

34 pointsMizza3 comments

Similar to 'rhash' [1], but in python. I like it!

Some feedback:

- What is the algorithm called 'SHA'? Is it the algorithm now commonly called 'SHA-0' [2], specified in NIST's FIPS PUB 180 (without revisions), published in 1993, and later withdrawn in FIPS PUB 180-1 in 1996 where SHA-1 was offered in its stead?

- I like your thorough coverage of all the myriad varieties of CRCs. In many casual usages, the differences between CRCs are glossed over, and I like that you chose the rigorous approach.

- I'm happy that you included SHA-3 and BLAKE2.

- Consider including support for all of the FIPS 180-4 algorithms. The ones missing from this implementation are 'SHA-512/224' and 'SHA-512/256'.

[1] http://rhash.anz.ru/ [2] https://tools.ietf.org/html/rfc6194

I didn't know about rhash! Cool! This might be easier to install and use though.

All of the first hashes come from Python's "hashlib.algorithms_available", so that's a really good question. Your guess seems like a good one.

I haven't found any 'SHA-512/224' and 'SHA-512/256', or any Skein function implementations in Python! PR's welcome!

You include things like DSA and ECDSA, which are not hash algorithms, but signatures. Is a signature being computed internally? If so, with what key?

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