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amiga-sha
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amiga-sha/sha384.c

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/*-
* Copyright (c) 2014-2015 Carsten Larsen
* Copyright (c) 2001-2003 Allan Saddi <allan@saddi.com>
* 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 ALLAN SADDI AND HIS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL ALLAN SADDI OR HIS CONTRIBUTORS 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.
*
*/
/*
* Define WORDS_BIGENDIAN if compiling on a big-endian architecture.
*
* Define SHA384_TEST to test the implementation using the NIST's
* sample messages. The output should be:
*
* cb00753f45a35e8b b5a03d699ac65007 272c32ab0eded163 1a8b605a43ff5bed
* 8086072ba1e7cc23 58baeca134c825a7
* 09330c33f71147e8 3d192fc782cd1b47 53111b173b3b05d2 2fa08086e3b0f712
* fcc7c71a557e2db9 66c3e9fa91746039
* 9d0e1809716474cb 086e834e310a4a1c ed149e9c00f24852 7972cec5704c2a5b
* 07b8b3dc38ecc4eb ae97ddd87f3d8985
*/
#include "compiler.h"
#include "sha384.h"
#define ROTL(x, n) (((x) << (n)) | ((x) >> (32 - (n))))
#define ROTR(x, n) (((x) >> (n)) | ((x) << (32 - (n))))
#define ROTL64(x, n) (((x) << (n)) | ((x) >> (64 - (n))))
#define ROTR64(x, n) (((x) >> (n)) | ((x) << (64 - (n))))
#define Ch(x, y, z) ((z) ^ ((x) & ((y) ^ (z))))
#define Maj(x, y, z) (((x) & ((y) | (z))) | ((y) & (z)))
#define SIGMA0(x) (ROTR64((x), 28) ^ ROTR64((x), 34) ^ ROTR64((x), 39))
#define SIGMA1(x) (ROTR64((x), 14) ^ ROTR64((x), 18) ^ ROTR64((x), 41))
#define sigma0(x) (ROTR64((x), 1) ^ ROTR64((x), 8) ^ ((x) >> 7))
#define sigma1(x) (ROTR64((x), 19) ^ ROTR64((x), 61) ^ ((x) >> 6))
#define DO_ROUND() { \
t1 = h + SIGMA1(e) + Ch(e, f, g) + *(Kp++) + *(W++); \
t2 = SIGMA0(a) + Maj(a, b, c); \
h = g; \
g = f; \
f = e; \
e = d + t1; \
d = c; \
c = b; \
b = a; \
a = t1 + t2; \
}
static const uint64_t K[80] = {
0x428a2f98d728ae22LL, 0x7137449123ef65cdLL,
0xb5c0fbcfec4d3b2fLL, 0xe9b5dba58189dbbcLL,
0x3956c25bf348b538LL, 0x59f111f1b605d019LL,
0x923f82a4af194f9bLL, 0xab1c5ed5da6d8118LL,
0xd807aa98a3030242LL, 0x12835b0145706fbeLL,
0x243185be4ee4b28cLL, 0x550c7dc3d5ffb4e2LL,
0x72be5d74f27b896fLL, 0x80deb1fe3b1696b1LL,
0x9bdc06a725c71235LL, 0xc19bf174cf692694LL,
0xe49b69c19ef14ad2LL, 0xefbe4786384f25e3LL,
0x0fc19dc68b8cd5b5LL, 0x240ca1cc77ac9c65LL,
0x2de92c6f592b0275LL, 0x4a7484aa6ea6e483LL,
0x5cb0a9dcbd41fbd4LL, 0x76f988da831153b5LL,
0x983e5152ee66dfabLL, 0xa831c66d2db43210LL,
0xb00327c898fb213fLL, 0xbf597fc7beef0ee4LL,
0xc6e00bf33da88fc2LL, 0xd5a79147930aa725LL,
0x06ca6351e003826fLL, 0x142929670a0e6e70LL,
0x27b70a8546d22ffcLL, 0x2e1b21385c26c926LL,
0x4d2c6dfc5ac42aedLL, 0x53380d139d95b3dfLL,
0x650a73548baf63deLL, 0x766a0abb3c77b2a8LL,
0x81c2c92e47edaee6LL, 0x92722c851482353bLL,
0xa2bfe8a14cf10364LL, 0xa81a664bbc423001LL,
0xc24b8b70d0f89791LL, 0xc76c51a30654be30LL,
0xd192e819d6ef5218LL, 0xd69906245565a910LL,
0xf40e35855771202aLL, 0x106aa07032bbd1b8LL,
0x19a4c116b8d2d0c8LL, 0x1e376c085141ab53LL,
0x2748774cdf8eeb99LL, 0x34b0bcb5e19b48a8LL,
0x391c0cb3c5c95a63LL, 0x4ed8aa4ae3418acbLL,
0x5b9cca4f7763e373LL, 0x682e6ff3d6b2b8a3LL,
0x748f82ee5defb2fcLL, 0x78a5636f43172f60LL,
0x84c87814a1f0ab72LL, 0x8cc702081a6439ecLL,
0x90befffa23631e28LL, 0xa4506cebde82bde9LL,
0xbef9a3f7b2c67915LL, 0xc67178f2e372532bLL,
0xca273eceea26619cLL, 0xd186b8c721c0c207LL,
0xeada7dd6cde0eb1eLL, 0xf57d4f7fee6ed178LL,
0x06f067aa72176fbaLL, 0x0a637dc5a2c898a6LL,
0x113f9804bef90daeLL, 0x1b710b35131c471bLL,
0x28db77f523047d84LL, 0x32caab7b40c72493LL,
0x3c9ebe0a15c9bebcLL, 0x431d67c49c100d4cLL,
0x4cc5d4becb3e42b6LL, 0x597f299cfc657e2aLL,
0x5fcb6fab3ad6faecLL, 0x6c44198c4a475817LL
};
#ifndef RUNTIME_ENDIAN
#ifdef WORDS_BIGENDIAN
#define BYTESWAP(x) (x)
#define BYTESWAP64(x) (x)
#else /* WORDS_BIGENDIAN */
#define BYTESWAP(x) ((ROTR((x), 8) & 0xff00ff00L) | \
(ROTL((x), 8) & 0x00ff00ffL))
#define BYTESWAP64(x) _byteswap64(x)
static inline uint64_t _byteswap64(uint64_t x)
{
uint32_t a = x >> 32;
uint32_t b = (uint32_t) x;
return ((uint64_t) BYTESWAP(b) << 32) | (uint64_t) BYTESWAP(a);
}
#endif /* WORDS_BIGENDIAN */
#else /* !RUNTIME_ENDIAN */
#define BYTESWAP(x) _byteswap(sc->littleEndian, x)
#define BYTESWAP64(x) _byteswap64(sc->littleEndian, x)
#define _BYTESWAP(x) ((ROTR((x), 8) & 0xff00ff00L) | \
(ROTL((x), 8) & 0x00ff00ffL))
#define _BYTESWAP64(x) __byteswap64(x)
static inline uint64_t __byteswap64(uint64_t x)
{
uint32_t a = x >> 32;
uint32_t b = (uint32_t) x;
return ((uint64_t) _BYTESWAP(b) << 32) | (uint64_t) _BYTESWAP(a);
}
static inline uint32_t _byteswap(int littleEndian, uint32_t x)
{
if (!littleEndian)
return x;
else
return _BYTESWAP(x);
}
static inline uint64_t _byteswap64(int littleEndian, uint64_t x)
{
if (!littleEndian)
return x;
else
return _BYTESWAP64(x);
}
static inline void setEndian(int *littleEndianp)
{
union {
uint32_t w;
uint8_t b[4];
} endian;
endian.w = 1L;
*littleEndianp = endian.b[0] != 0;
}
#endif /* !RUNTIME_ENDIAN */
static const uint8_t padding[128] = {
0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
void
SHA384Init (SHA384Context *sc)
{
#ifdef RUNTIME_ENDIAN
setEndian (&sc->littleEndian);
#endif /* RUNTIME_ENDIAN */
sc->totalLength[0] = 0LL;
sc->totalLength[1] = 0LL;
sc->hash[0] = 0xcbbb9d5dc1059ed8LL;
sc->hash[1] = 0x629a292a367cd507LL;
sc->hash[2] = 0x9159015a3070dd17LL;
sc->hash[3] = 0x152fecd8f70e5939LL;
sc->hash[4] = 0x67332667ffc00b31LL;
sc->hash[5] = 0x8eb44a8768581511LL;
sc->hash[6] = 0xdb0c2e0d64f98fa7LL;
sc->hash[7] = 0x47b5481dbefa4fa4LL;
sc->bufferLength = 0L;
}
static void
burnStack (int size)
{
char buf[128];
memset (buf, 0, sizeof (buf));
size -= sizeof (buf);
if (size > 0)
burnStack (size);
}
static void
SHA384Guts (SHA384Context *sc, const uint64_t *cbuf)
{
uint64_t buf[80];
uint64_t *W, *W2, *W7, *W15, *W16;
uint64_t a, b, c, d, e, f, g, h;
uint64_t t1, t2;
const uint64_t *Kp;
int i;
W = buf;
for (i = 15; i >= 0; i--) {
*(W++) = BYTESWAP64(*cbuf);
cbuf++;
}
W16 = &buf[0];
W15 = &buf[1];
W7 = &buf[9];
W2 = &buf[14];
for (i = 63; i >= 0; i--) {
*(W++) = sigma1(*W2) + *(W7++) + sigma0(*W15) + *(W16++);
W2++;
W15++;
}
a = sc->hash[0];
b = sc->hash[1];
c = sc->hash[2];
d = sc->hash[3];
e = sc->hash[4];
f = sc->hash[5];
g = sc->hash[6];
h = sc->hash[7];
Kp = K;
W = buf;
for (i = 79; i >= 0; i--)
DO_ROUND();
sc->hash[0] += a;
sc->hash[1] += b;
sc->hash[2] += c;
sc->hash[3] += d;
sc->hash[4] += e;
sc->hash[5] += f;
sc->hash[6] += g;
sc->hash[7] += h;
}
void
SHA384Update (SHA384Context *sc, const void *vdata, uint32_t len)
{
const uint8_t *data = vdata;
uint32_t bufferBytesLeft;
uint32_t bytesToCopy;
uint64_t carryCheck;
int needBurn = 0;
#ifdef SHA384_FAST_COPY
if (sc->bufferLength) {
bufferBytesLeft = 128L - sc->bufferLength;
bytesToCopy = bufferBytesLeft;
if (bytesToCopy > len)
bytesToCopy = len;
memcpy (&sc->buffer.bytes[sc->bufferLength], data, bytesToCopy);
carryCheck = sc->totalLength[1];
sc->totalLength[1] += bytesToCopy * 8L;
if (sc->totalLength[1] < carryCheck)
sc->totalLength[0]++;
sc->bufferLength += bytesToCopy;
data += bytesToCopy;
len -= bytesToCopy;
if (sc->bufferLength == 128L) {
SHA384Guts (sc, sc->buffer.words);
needBurn = 1;
sc->bufferLength = 0L;
}
}
while (len > 127) {
carryCheck = sc->totalLength[1];
sc->totalLength[1] += 1024L;
if (sc->totalLength[1] < carryCheck)
sc->totalLength[0]++;
SHA384Guts (sc, data);
needBurn = 1;
data += 128L;
len -= 128L;
}
if (len) {
memcpy (&sc->buffer.bytes[sc->bufferLength], data, len);
carryCheck = sc->totalLength[1];
sc->totalLength[1] += len * 8L;
if (sc->totalLength[1] < carryCheck)
sc->totalLength[0]++;
sc->bufferLength += len;
}
#else /* SHA384_FAST_COPY */
while (len) {
bufferBytesLeft = 128L - sc->bufferLength;
bytesToCopy = bufferBytesLeft;
if (bytesToCopy > len)
bytesToCopy = len;
memcpy (&sc->buffer.bytes[sc->bufferLength], data, bytesToCopy);
carryCheck = sc->totalLength[1];
sc->totalLength[1] += bytesToCopy * 8L;
if (sc->totalLength[1] < carryCheck)
sc->totalLength[0]++;
sc->bufferLength += bytesToCopy;
data += bytesToCopy;
len -= bytesToCopy;
if (sc->bufferLength == 128L) {
SHA384Guts (sc, sc->buffer.words);
needBurn = 1;
sc->bufferLength = 0L;
}
}
#endif /* SHA384_FAST_COPY */
if (needBurn)
burnStack (sizeof (uint64_t[90]) + sizeof (uint64_t *[6]) + sizeof (int));
}
void
SHA384Final (SHA384Context *sc, uint8_t hash[SHA384_HASH_SIZE])
{
uint32_t bytesToPad;
uint64_t lengthPad[2];
int i;
bytesToPad = 240L - sc->bufferLength;
if (bytesToPad > 128L)
bytesToPad -= 128L;
lengthPad[0] = BYTESWAP64(sc->totalLength[0]);
lengthPad[1] = BYTESWAP64(sc->totalLength[1]);
SHA384Update (sc, padding, bytesToPad);
SHA384Update (sc, lengthPad, 16L);
if (hash) {
for (i = 0; i < SHA384_HASH_WORDS; i++) {
#ifdef SHA384_FAST_COPY
*((uint64_t *) hash) = BYTESWAP64(sc->hash[i]);
#else /* SHA384_FAST_COPY */
hash[0] = (uint8_t) (sc->hash[i] >> 56);
hash[1] = (uint8_t) (sc->hash[i] >> 48);
hash[2] = (uint8_t) (sc->hash[i] >> 40);
hash[3] = (uint8_t) (sc->hash[i] >> 32);
hash[4] = (uint8_t) (sc->hash[i] >> 24);
hash[5] = (uint8_t) (sc->hash[i] >> 16);
hash[6] = (uint8_t) (sc->hash[i] >> 8);
hash[7] = (uint8_t) sc->hash[i];
#endif /* SHA384_FAST_COPY */
hash += 8;
}
}
}
#ifdef SHA384_TEST
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int
main (int argc, char *argv[])
{
SHA384Context foo;
uint8_t hash[SHA384_HASH_SIZE];
char buf[1000];
int i;
SHA384Init (&foo);
SHA384Update (&foo, "abc", 3);
SHA384Final (&foo, hash);
for (i = 0; i < SHA384_HASH_SIZE;) {
printf ("%02x", hash[i++]);
if (!(i % 8))
printf (" ");
if (!(i % 32))
printf ("\n");
}
printf ("\n");
SHA384Init (&foo);
SHA384Update (&foo,
"abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmn"
"hijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu",
112);
SHA384Final (&foo, hash);
for (i = 0; i < SHA384_HASH_SIZE;) {
printf ("%02x", hash[i++]);
if (!(i % 8))
printf (" ");
if (!(i % 32))
printf ("\n");
}
printf ("\n");
SHA384Init (&foo);
memset (buf, 'a', sizeof (buf));
for (i = 0; i < 1000; i++)
SHA384Update (&foo, buf, sizeof (buf));
SHA384Final (&foo, hash);
for (i = 0; i < SHA384_HASH_SIZE;) {
printf ("%02x", hash[i++]);
if (!(i % 8))
printf (" ");
if (!(i % 32))
printf ("\n");
}
printf ("\n");
exit (0);
}
#endif /* SHA384_TEST */
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