Mercurial > hg > nginx-quic
view src/core/ngx_murmurhash.c @ 8500:ef8276c8ccff quic
QUIC: consistent use of 12-byte buffers in nonce computation.
All supported cipher suites produce 96-bit IV (RFC 5116, 5.1, RFC 8439, 2.3).
This eliminates a few magic numbers and run-time overhead.
author | Sergey Kandaurov <pluknet@nginx.com> |
---|---|
date | Wed, 16 Jun 2021 17:54:21 +0300 |
parents | f38647c651a8 |
children |
line wrap: on
line source
/* * Copyright (C) Austin Appleby */ #include <ngx_config.h> #include <ngx_core.h> uint32_t ngx_murmur_hash2(u_char *data, size_t len) { uint32_t h, k; h = 0 ^ len; while (len >= 4) { k = data[0]; k |= data[1] << 8; k |= data[2] << 16; k |= data[3] << 24; k *= 0x5bd1e995; k ^= k >> 24; k *= 0x5bd1e995; h *= 0x5bd1e995; h ^= k; data += 4; len -= 4; } switch (len) { case 3: h ^= data[2] << 16; /* fall through */ case 2: h ^= data[1] << 8; /* fall through */ case 1: h ^= data[0]; h *= 0x5bd1e995; } h ^= h >> 13; h *= 0x5bd1e995; h ^= h >> 15; return h; }