diff options
Diffstat (limited to 'src/ext/csiphash.c')
| -rw-r--r-- | src/ext/csiphash.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/src/ext/csiphash.c b/src/ext/csiphash.c index c247886038..27c5358ebe 100644 --- a/src/ext/csiphash.c +++ b/src/ext/csiphash.c @@ -1,5 +1,5 @@ /* <MIT License> - Copyright (c) 2013 Marek Majkowski <marek@popcount.org> + Copyright (c) 2013-2014 Marek Majkowski <marek@popcount.org> Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal @@ -100,10 +100,18 @@ uint64_t siphash24(const void *src, unsigned long src_sz, const struct sipkey *k uint64_t k0 = key->k0; uint64_t k1 = key->k1; uint64_t b = (uint64_t)src_sz << 56; +#ifdef UNALIGNED_OK const uint64_t *in = (uint64_t*)src; +#else + /* On platforms where alignment matters, if 'in' is a pointer to a + * datatype that must be aligned, the compiler is allowed to + * generate code that assumes that it is aligned as such. + */ + const uint8_t *in = (uint8_t *)src; +#endif - uint64_t t; - uint8_t *pt, *m; + uint64_t t; + uint8_t *pt, *m; uint64_t v0 = k0 ^ 0x736f6d6570736575ULL; uint64_t v1 = k1 ^ 0x646f72616e646f6dULL; @@ -113,12 +121,14 @@ uint64_t siphash24(const void *src, unsigned long src_sz, const struct sipkey *k while (src_sz >= 8) { #ifdef UNALIGNED_OK uint64_t mi = _le64toh(*in); + in += 1; #else uint64_t mi; memcpy(&mi, in, 8); mi = _le64toh(mi); + in += 8; #endif - in += 1; src_sz -= 8; + src_sz -= 8; v3 ^= mi; DOUBLE_ROUND(v0,v1,v2,v3); v0 ^= mi; |