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-rw-r--r--src/siphash.c87
1 files changed, 0 insertions, 87 deletions
diff --git a/src/siphash.c b/src/siphash.c
deleted file mode 100644
index 7a5c8d4..0000000
--- a/src/siphash.c
+++ /dev/null
@@ -1,87 +0,0 @@
-// Code taken from https://github.com/floodyberry/siphash with some edits.
-//
-// To the extent possible under law, the author(s) have dedicated all copyright
-// and related and neighboring rights to this software to the public domain
-// worldwide. This software is distributed without any warranty.
-//
-// You should have received a copy of the CC0 Public Domain Dedication along
-// with this software. If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.
-
-#include "siphash.h"
-
-inline static uint64_t
-u8to64_le (const unsigned char *p)
-{
- return
- (uint64_t) p[0] |
- (uint64_t) p[1] << 8 |
- (uint64_t) p[2] << 16 |
- (uint64_t) p[3] << 24 |
- (uint64_t) p[4] << 32 |
- (uint64_t) p[5] << 40 |
- (uint64_t) p[6] << 48 |
- (uint64_t) p[7] << 56 ;
-}
-
-uint64_t
-siphash (const unsigned char key[16], const unsigned char *m, size_t len)
-{
- uint64_t v0, v1, v2, v3;
- uint64_t mi, k0, k1;
- uint64_t last7;
- size_t i, blocks;
-
- k0 = u8to64_le (key + 0);
- k1 = u8to64_le (key + 8);
- v0 = k0 ^ 0x736f6d6570736575ull;
- v1 = k1 ^ 0x646f72616e646f6dull;
- v2 = k0 ^ 0x6c7967656e657261ull;
- v3 = k1 ^ 0x7465646279746573ull;
-
- last7 = (uint64_t) (len & 0xff) << 56;
-
-#define ROTL64(a,b) (((a)<<(b))|((a)>>(64-b)))
-
-#define COMPRESS \
- v0 += v1; v2 += v3; \
- v1 = ROTL64 (v1,13); v3 = ROTL64 (v3,16); \
- v1 ^= v0; v3 ^= v2; \
- v0 = ROTL64 (v0,32); \
- v2 += v1; v0 += v3; \
- v1 = ROTL64 (v1,17); v3 = ROTL64 (v3,21); \
- v1 ^= v2; v3 ^= v0; \
- v2 = ROTL64(v2,32);
-
- for (i = 0, blocks = (len & ~(size_t) 7); i < blocks; i += 8)
- {
- mi = u8to64_le (m + i);
- v3 ^= mi;
- COMPRESS
- COMPRESS
- v0 ^= mi;
- }
-
- switch (len - blocks)
- {
- case 7: last7 |= (uint64_t) m[i + 6] << 48;
- case 6: last7 |= (uint64_t) m[i + 5] << 40;
- case 5: last7 |= (uint64_t) m[i + 4] << 32;
- case 4: last7 |= (uint64_t) m[i + 3] << 24;
- case 3: last7 |= (uint64_t) m[i + 2] << 16;
- case 2: last7 |= (uint64_t) m[i + 1] << 8;
- case 1: last7 |= (uint64_t) m[i + 0] ;
- default:;
- };
- v3 ^= last7;
- COMPRESS
- COMPRESS
- v0 ^= last7;
- v2 ^= 0xff;
- COMPRESS
- COMPRESS
- COMPRESS
- COMPRESS
-
- return v0 ^ v1 ^ v2 ^ v3;
-}
-