readme

1 files changed, 0 insertions, 165 deletions

diff --git a/siphash24.c b/siphash24.c
deleted file mode 100644
index 6b2b8a0..0000000
--- a/siphash24.c
+++ /dev/null
@@ -1,165 +0,0 @@
-/*
-   SipHash reference C implementation
-
-   Copyright (c) 2012-2014 Jean-Philippe Aumasson
-   <jeanphilippe.aumasson@gmail.com>
-   Copyright (c) 2012-2014 Daniel J. Bernstein <djb@cr.yp.to>
-
-   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 <stdint.h>
-#include <stdio.h>
-#include <string.h>
-
-/* default: SipHash-2-4 */
-#define cROUNDS 2
-#define dROUNDS 4
-
-#define ROTL(x, b) (uint64_t)(((x) << (b)) | ((x) >> (64 - (b))))
-
-#define U32TO8_LE(p, v)                                                        \
-  (p)[0] = (uint8_t)((v));                                                     \
-  (p)[1] = (uint8_t)((v) >> 8);                                                \
-  (p)[2] = (uint8_t)((v) >> 16);                                               \
-  (p)[3] = (uint8_t)((v) >> 24);
-
-#define U64TO8_LE(p, v)                                                        \
-  U32TO8_LE((p), (uint32_t)((v)));                                             \
-  U32TO8_LE((p) + 4, (uint32_t)((v) >> 32));
-
-#define U8TO64_LE(p)                                                           \
-  (((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))
-
-#define SIPROUND                                                               \
-  do {                                                                         \
-    v0 += v1;                                                                  \
-    v1 = ROTL(v1, 13);                                                         \
-    v1 ^= v0;                                                                  \
-    v0 = ROTL(v0, 32);                                                         \
-    v2 += v3;                                                                  \
-    v3 = ROTL(v3, 16);                                                         \
-    v3 ^= v2;                                                                  \
-    v0 += v3;                                                                  \
-    v3 = ROTL(v3, 21);                                                         \
-    v3 ^= v0;                                                                  \
-    v2 += v1;                                                                  \
-    v1 = ROTL(v1, 17);                                                         \
-    v1 ^= v2;                                                                  \
-    v2 = ROTL(v2, 32);                                                         \
-  } while (0)
-
-#ifdef DEBUG
-#define TRACE                                                                  \
-  do {                                                                         \
-    printf("(%3d) v0 %08x %08x\n", (int)inlen, (uint32_t)(v0 >> 32),           \
-           (uint32_t)v0);                                                      \
-    printf("(%3d) v1 %08x %08x\n", (int)inlen, (uint32_t)(v1 >> 32),           \
-           (uint32_t)v1);                                                      \
-    printf("(%3d) v2 %08x %08x\n", (int)inlen, (uint32_t)(v2 >> 32),           \
-           (uint32_t)v2);                                                      \
-    printf("(%3d) v3 %08x %08x\n", (int)inlen, (uint32_t)(v3 >> 32),           \
-           (uint32_t)v3);                                                      \
-  } while (0)
-#else
-#define TRACE
-#endif
-
-int siphash(uint8_t *out, const uint8_t *in, uint64_t inlen, const uint8_t *k) {
-  /* "somepseudorandomlygeneratedbytes" */
-  uint64_t v0 = 0x736f6d6570736575ULL;
-  uint64_t v1 = 0x646f72616e646f6dULL;
-  uint64_t v2 = 0x6c7967656e657261ULL;
-  uint64_t v3 = 0x7465646279746573ULL;
-  uint64_t b;
-  uint64_t k0 = U8TO64_LE(k);
-  uint64_t k1 = U8TO64_LE(k + 8);
-  uint64_t m;
-  int i;
-  const uint8_t *end = in + inlen - (inlen % sizeof(uint64_t));
-  const int left = inlen & 7;
-  b = ((uint64_t)inlen) << 56;
-  v3 ^= k1;
-  v2 ^= k0;
-  v1 ^= k1;
-  v0 ^= k0;
-
-#ifdef DOUBLE
-  v1 ^= 0xee;
-#endif
-
-  for (; in != end; in += 8) {
-    m = U8TO64_LE(in);
-    v3 ^= m;
-
-    TRACE;
-    for (i = 0; i < cROUNDS; ++i)
-      SIPROUND;
-
-    v0 ^= m;
-  }
-
-  switch (left) {
-  case 7:
-    b |= ((uint64_t)in[6]) << 48;
-  case 6:
-    b |= ((uint64_t)in[5]) << 40;
-  case 5:
-    b |= ((uint64_t)in[4]) << 32;
-  case 4:
-    b |= ((uint64_t)in[3]) << 24;
-  case 3:
-    b |= ((uint64_t)in[2]) << 16;
-  case 2:
-    b |= ((uint64_t)in[1]) << 8;
-  case 1:
-    b |= ((uint64_t)in[0]);
-    break;
-  case 0:
-    break;
-  }
-
-  v3 ^= b;
-
-  TRACE;
-  for (i = 0; i < cROUNDS; ++i)
-    SIPROUND;
-
-  v0 ^= b;
-
-#ifndef DOUBLE
-  v2 ^= 0xff;
-#else
-  v2 ^= 0xee;
-#endif
-
-  TRACE;
-  for (i = 0; i < dROUNDS; ++i)
-    SIPROUND;
-
-  b = v0 ^ v1 ^ v2 ^ v3;
-  U64TO8_LE(out, b);
-
-#ifdef DOUBLE
-  v1 ^= 0xdd;
-
-  TRACE;
-  for (i = 0; i < dROUNDS; ++i)
-    SIPROUND;
-
-  b = v0 ^ v1 ^ v2 ^ v3;
-  U64TO8_LE(out + 8, b);
-#endif
-
-  return 0;
-}
-