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touched up utl-siph.c

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hyung-hwan 2020-07-03 13:18:16 +00:00
parent 8dd3bc6e7f
commit dd83db4943
1 changed files with 50 additions and 24 deletions
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74
mio/lib/utl-siph.c
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@ -1,5 +1,30 @@
#include <mio-utl.h>
/*
* $Id$
*
Copyright (c) 2016-2020 Chung, Hyung-Hwan. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WAfRRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <mio-utl.h>
/*
* This code is based on https://github.com/emboss/siphash-c/blob/master/src/siphash.c
@ -111,14 +136,14 @@ static MIO_INLINE sip_uint64_t* xor64_to (sip_uint64_t* v, sip_uint64_t s)
#endif /* (MIO_SIZEOF_UINT64_T > 0) */
static const char sip_init_state_bin[] =
static const mio_uint8_t sip_init_v_bin[] =
{
0x75, 0x65, 0x73, 0x70, 0x65, 0x6d, 0x6f, 0x73,
0x6d, 0x6f, 0x64, 0x6e, 0x61, 0x72, 0x6f, 0x64,
0x61, 0x72, 0x65, 0x6e, 0x65, 0x67, 0x79, 0x6c,
0x73, 0x65, 0x74, 0x79, 0x62, 0x64, 0x65, 0x74
};
#define sip_init_state (*(sip_uint64_t(*)[4])sip_init_state_bin)
#define sip_init_v (*(sip_uint64_t(*)[4])sip_init_v_bin)
#define SIP_COMPRESS(v0, v1, v2, v3) do {\
ADD64_TO((v0), (v1)); \
@ -148,7 +173,7 @@ void mio_sip_hash_24 (const mio_uint8_t key[16], mio_uint8_t *dptr, mio_oow_t dl
{
sip_uint64_t k0, k1;
sip_uint64_t v0, v1, v2, v3;
sip_uint64_t m, last;
sip_uint64_t m, b;
mio_oow_t rem;
mio_uint8_t* end;
@ -159,10 +184,10 @@ void mio_sip_hash_24 (const mio_uint8_t key[16], mio_uint8_t *dptr, mio_oow_t dl
k0 = U8TO64_LE(key);
k1 = U8TO64_LE(key + 8);
v0 = k0; XOR64_TO(v0, sip_init_state[0]);
v1 = k1; XOR64_TO(v1, sip_init_state[1]);
v2 = k0; XOR64_TO(v2, sip_init_state[2]);
v3 = k1; XOR64_TO(v3, sip_init_state[3]);
v0 = k0; XOR64_TO(v0, sip_init_v[0]);
v1 = k1; XOR64_TO(v1, sip_init_v[1]);
v2 = k0; XOR64_TO(v2, sip_init_v[2]);
v3 = k1; XOR64_TO(v3, sip_init_v[3]);
for (; dptr != end; dptr += 8)
{
@ -171,32 +196,33 @@ void mio_sip_hash_24 (const mio_uint8_t key[16], mio_uint8_t *dptr, mio_oow_t dl
}
#if (MIO_SIZEOF_UINT64_T > 0)
last = (mio_uint64_t)dlen << 56;
b = (mio_uint64_t)dlen << 56;
#define OR_BYTE(n) (last |= ((mio_uint64_t)end[n]) << ((n) * 8))
#define OR_BYTE_HI(n) (b |= ((mio_uint64_t)end[n]) << ((n) * 8))
#define OR_BYTE_LO(n) (b |= ((mio_uint64_t)end[n]) << ((n) * 8))
#else
last.hi = (mio_uint32_t)dlen << 24;
last.lo = 0;
#define OR_BYTE(n) do { \
if (n >= 4) last.hi |= ((mio_uint32_t)end[n]) << ((n) >= 4 ? (n) * 8 - 32 : 0); \
else last.lo |= ((mio_uint32_t)end[n]) << ((n) >= 4 ? 0 : (n) * 8); \
} while (0)
b.hi = (mio_uint32_t)dlen << 24;
b.lo = 0;
#define OR_BYTE_HI(n) (b.hi |= ((mio_uint32_t)end[n]) << ((n) * 8 - 32)) /* n: 4 to 7 */
#define OR_BYTE_LO(n) (b.lo |= ((mio_uint32_t)end[n]) << ((n) * 8)) /* n: 0 to 3 */
#endif
switch (rem)
{
case 7: OR_BYTE (6);
case 6: OR_BYTE (5);
case 5: OR_BYTE (4);
case 4: OR_BYTE (3);
case 3: OR_BYTE (2);
case 2: OR_BYTE (1);
case 1: OR_BYTE (0); break;
case 7: OR_BYTE_HI (6);
case 6: OR_BYTE_HI (5);
case 5: OR_BYTE_HI (4);
case 4: OR_BYTE_LO (3);
case 3: OR_BYTE_LO (2);
case 2: OR_BYTE_LO (1);
case 1: OR_BYTE_LO (0); break;
case 0: break;
}
SIP_2_ROUND (last, v0, v1, v2, v3);
SIP_2_ROUND (b, v0, v1, v2, v3);
XOR64_INT (v2, 0xff);