From ecad324ef338f4dd101b164ea41bb7db19ee582c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?P=C5=99emysl=20Janouch?= Date: Sat, 28 Feb 2015 21:18:02 +0100 Subject: Move to liberty --- siphash.c | 87 --------------------------------------------------------------- 1 file changed, 87 deletions(-) delete mode 100644 siphash.c (limited to 'siphash.c') diff --git a/siphash.c b/siphash.c deleted file mode 100644 index 7a5c8d4..0000000 --- a/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 . - -#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; -} - -- cgit v1.2.3