Mirror/zeek
1
0
Fork 0
mirror of https://github.com/zeek/zeek.git synced 2025-10-14 04:28:20 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 2

Start refactoring hashing.

Browse source 
This commit moves some of the hash datastructures and code from
util.cc into Hash.cc - where it seems more appropriate.

It also starts to make more Keyed hash functions available - still
using siphash as the default 64 bit keyed hash, but also making
128 and 256 bit highway hashes available.

There already are a few other functions that are defined but not
yet implemented - these will be "static" keyed hashes - which use
an installation specific key. These will be used to, e.g., get
rid of md5 hashing for the generation of file UIDs.
This commit is contained in:
Johanna Amann 2020-04-24 17:11:16 -07:00
parent d34532f847
commit 360c06a3f8
7 changed files with 123 additions and 67 deletions
Download patch file Download diff file Expand all files Collapse all files

2
src/probabilistic/Hasher.cc
View file

@ -106,7 +106,7 @@ UHF::UHF(Hasher::seed_t arg_seed)
// times.
Hasher::digest UHF::hash(const void* x, size_t n) const
{
assert(sizeof(Hasher::seed_t) == 16); // siphash always needs a 128 bit seed
static_assert(std::is_same<highwayhash::SipHashState::Key, decltype(seed.h)>::value, "Seed value is not the same type as highwayhash key");
return highwayhash::SipHash(seed.h, reinterpret_cast<const char*>(x), n);
}