Hacker News new | ask | show | jobs
by jdcarter 1687 days ago
I'm using XXHash3 for verifying data integrity of large (10+MB) blobs. Very fast and appears to work very well in my testing--it's never missed any bit error I've thrown at it.

Aside: when storing hashes, be sure to store the hash type as well so that you can change it later if needed, e.g. "xxh3-[hash value]". RFC-6920 also has things to say about storing hash types and values, although I haven't seen its format in common use.
1 comments
njt 1685 days ago
> be sure to store the hash type as well so that you can change it later if needed

Thanks for sharing this, I'd been doing this on my own for my own stuff (eg. foo.txt-xxh32-ea79e094), but it's good to know someone else has thought it through.

I ran into the problem once where someone had named some files foo-fb490c or something similar without any annotation, and when there was a problem, it took a file to figure out they were using truncated sha256 hashes.

link