On 25 November 2010 17:59, Yitzchak Gale
Were you thinking that you could serialize those things and then just use murmurhash on them?
Pretty much, yes.
Try it, but my guess is it won't work well. Murmurhash is designed for strings, not for those things. It's not a cryptographic hash; it's designed to have good statistical properties for a certain very specific types of input. If you abuse it, you'll likely lose those good properties. The parameters for murmerhash were tweaked using keys that were English words, and very short strings of random bytes. There is no evidence it will work well with other kinds of keys.
Where did you get this from? The criteria listed at http://code.google.com/p/smhasher/wiki/SMHasher all talk about arbitrary bytes. MurmurHash is designed for arbitrary byte strings, not English words. It is not a cryptographic hash, sure, but I can't see any evidence that it only works with text. / Thomas -- Push the envelope. Watch it bend.