On: SeaHash: Explained

[zeveb]

> Even when I've not needed a cryptographic hash, I've still used one, because why not?

Performance. Take a look at djb's (non-cryptographic) hash, with a constant multiplier chosen to be implemented with a shift and an add — that's the level of performance a non-cryptographic hash (e.g. for hash tables & similar purposes) needs.

https://gist.github.com/hmic/1676398

[ticki_ → zeveb]

Please don't. DJB2 is a poor hash function. It's similar to FNV: Entropy only moves upwards, so flipping higher bits doesn't affect lower bits.

In other words, you risk mapping `n` and `-n` to the same value under some modulus.