267 lines
7 KiB
C
267 lines
7 KiB
C
|
/* $OpenBSD: wp_dgst.c,v 1.4 2014/07/12 11:25:25 miod Exp $ */
|
||
|
|
/**
|
||
|
|
* The Whirlpool hashing function.
|
||
|
|
*
|
||
|
|
* <P>
|
||
|
|
* <b>References</b>
|
||
|
|
*
|
||
|
|
* <P>
|
||
|
|
* The Whirlpool algorithm was developed by
|
||
|
|
* <a href="mailto:pbarreto@scopus.com.br">Paulo S. L. M. Barreto</a> and
|
||
|
|
* <a href="mailto:vincent.rijmen@cryptomathic.com">Vincent Rijmen</a>.
|
||
|
|
*
|
||
|
|
* See
|
||
|
|
* P.S.L.M. Barreto, V. Rijmen,
|
||
|
|
* ``The Whirlpool hashing function,''
|
||
|
|
* NESSIE submission, 2000 (tweaked version, 2001),
|
||
|
|
* <https://www.cosic.esat.kuleuven.ac.be/nessie/workshop/submissions/whirlpool.zip>
|
||
|
|
*
|
||
|
|
* Based on "@version 3.0 (2003.03.12)" by Paulo S.L.M. Barreto and
|
||
|
|
* Vincent Rijmen. Lookup "reference implementations" on
|
||
|
|
* <http://planeta.terra.com.br/informatica/paulobarreto/>
|
||
|
|
*
|
||
|
|
* =============================================================================
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ''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 THE AUTHORS OR 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.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* OpenSSL-specific implementation notes.
|
||
|
|
*
|
||
|
|
* WHIRLPOOL_Update as well as one-stroke WHIRLPOOL both expect
|
||
|
|
* number of *bytes* as input length argument. Bit-oriented routine
|
||
|
|
* as specified by authors is called WHIRLPOOL_BitUpdate[!] and
|
||
|
|
* does not have one-stroke counterpart.
|
||
|
|
*
|
||
|
|
* WHIRLPOOL_BitUpdate implements byte-oriented loop, essentially
|
||
|
|
* to serve WHIRLPOOL_Update. This is done for performance.
|
||
|
|
*
|
||
|
|
* Unlike authors' reference implementation, block processing
|
||
|
|
* routine whirlpool_block is designed to operate on multi-block
|
||
|
|
* input. This is done for performance.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "wp_locl.h"
|
||
|
|
#include <openssl/crypto.h>
|
||
|
|
#include <string.h>
|
||
|
|
|
||
|
|
int WHIRLPOOL_Init(WHIRLPOOL_CTX *c)
|
||
|
|
{
|
||
|
|
memset (c,0,sizeof(*c));
|
||
|
|
return(1);
|
||
|
|
}
|
||
|
|
|
||
|
|
int WHIRLPOOL_Update (WHIRLPOOL_CTX *c,const void *_inp,size_t bytes)
|
||
|
|
{
|
||
|
|
/* Well, largest suitable chunk size actually is
|
||
|
|
* (1<<(sizeof(size_t)*8-3))-64, but below number
|
||
|
|
* is large enough for not to care about excessive
|
||
|
|
* calls to WHIRLPOOL_BitUpdate... */
|
||
|
|
size_t chunk = ((size_t)1)<<(sizeof(size_t)*8-4);
|
||
|
|
const unsigned char *inp = _inp;
|
||
|
|
|
||
|
|
while (bytes>=chunk)
|
||
|
|
{
|
||
|
|
WHIRLPOOL_BitUpdate(c,inp,chunk*8);
|
||
|
|
bytes -= chunk;
|
||
|
|
inp += chunk;
|
||
|
|
}
|
||
|
|
if (bytes)
|
||
|
|
WHIRLPOOL_BitUpdate(c,inp,bytes*8);
|
||
|
|
|
||
|
|
return(1);
|
||
|
|
}
|
||
|
|
|
||
|
|
void WHIRLPOOL_BitUpdate(WHIRLPOOL_CTX *c,const void *_inp,size_t bits)
|
||
|
|
{
|
||
|
|
size_t n;
|
||
|
|
unsigned int bitoff = c->bitoff,
|
||
|
|
bitrem = bitoff%8,
|
||
|
|
inpgap = (8-(unsigned int)bits%8)&7;
|
||
|
|
const unsigned char *inp=_inp;
|
||
|
|
|
||
|
|
/* This 256-bit increment procedure relies on the size_t
|
||
|
|
* being natural size of CPU register, so that we don't
|
||
|
|
* have to mask the value in order to detect overflows. */
|
||
|
|
c->bitlen[0] += bits;
|
||
|
|
if (c->bitlen[0] < bits) /* overflow */
|
||
|
|
{
|
||
|
|
n = 1;
|
||
|
|
do { c->bitlen[n]++;
|
||
|
|
} while(c->bitlen[n]==0
|
||
|
|
&& ++n<(WHIRLPOOL_COUNTER/sizeof(size_t)));
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifndef OPENSSL_SMALL_FOOTPRINT
|
||
|
|
reconsider:
|
||
|
|
if (inpgap==0 && bitrem==0) /* byte-oriented loop */
|
||
|
|
{
|
||
|
|
while (bits)
|
||
|
|
{
|
||
|
|
if (bitoff==0 && (n=bits/WHIRLPOOL_BBLOCK))
|
||
|
|
{
|
||
|
|
whirlpool_block(c,inp,n);
|
||
|
|
inp += n*WHIRLPOOL_BBLOCK/8;
|
||
|
|
bits %= WHIRLPOOL_BBLOCK;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
unsigned int byteoff = bitoff/8;
|
||
|
|
|
||
|
|
bitrem = WHIRLPOOL_BBLOCK - bitoff;/* re-use bitrem */
|
||
|
|
if (bits >= bitrem)
|
||
|
|
{
|
||
|
|
bits -= bitrem;
|
||
|
|
bitrem /= 8;
|
||
|
|
memcpy(c->data+byteoff,inp,bitrem);
|
||
|
|
inp += bitrem;
|
||
|
|
whirlpool_block(c,c->data,1);
|
||
|
|
bitoff = 0;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
memcpy(c->data+byteoff,inp,bits/8);
|
||
|
|
bitoff += (unsigned int)bits;
|
||
|
|
bits = 0;
|
||
|
|
}
|
||
|
|
c->bitoff = bitoff;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else /* bit-oriented loop */
|
||
|
|
#endif
|
||
|
|
{
|
||
|
|
/*
|
||
|
|
inp
|
||
|
|
|
|
||
|
|
+-------+-------+-------
|
||
|
|
|||||||||||||||||||||
|
||
|
|
+-------+-------+-------
|
||
|
|
+-------+-------+-------+-------+-------
|
||
|
|
|||||||||||||| c->data
|
||
|
|
+-------+-------+-------+-------+-------
|
||
|
|
|
|
||
|
|
c->bitoff/8
|
||
|
|
*/
|
||
|
|
while (bits)
|
||
|
|
{
|
||
|
|
unsigned int byteoff = bitoff/8;
|
||
|
|
unsigned char b;
|
||
|
|
|
||
|
|
#ifndef OPENSSL_SMALL_FOOTPRINT
|
||
|
|
if (bitrem==inpgap)
|
||
|
|
{
|
||
|
|
c->data[byteoff++] |= inp[0] & (0xff>>inpgap);
|
||
|
|
inpgap = 8-inpgap;
|
||
|
|
bitoff += inpgap; bitrem = 0; /* bitoff%8 */
|
||
|
|
bits -= inpgap; inpgap = 0; /* bits%8 */
|
||
|
|
inp++;
|
||
|
|
if (bitoff==WHIRLPOOL_BBLOCK)
|
||
|
|
{
|
||
|
|
whirlpool_block(c,c->data,1);
|
||
|
|
bitoff = 0;
|
||
|
|
}
|
||
|
|
c->bitoff = bitoff;
|
||
|
|
goto reconsider;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
#endif
|
||
|
|
if (bits>=8)
|
||
|
|
{
|
||
|
|
b = ((inp[0]<<inpgap) | (inp[1]>>(8-inpgap)));
|
||
|
|
b &= 0xff;
|
||
|
|
if (bitrem) c->data[byteoff++] |= b>>bitrem;
|
||
|
|
else c->data[byteoff++] = b;
|
||
|
|
bitoff += 8;
|
||
|
|
bits -= 8;
|
||
|
|
inp++;
|
||
|
|
if (bitoff>=WHIRLPOOL_BBLOCK)
|
||
|
|
{
|
||
|
|
whirlpool_block(c,c->data,1);
|
||
|
|
byteoff = 0;
|
||
|
|
bitoff %= WHIRLPOOL_BBLOCK;
|
||
|
|
}
|
||
|
|
if (bitrem) c->data[byteoff] = b<<(8-bitrem);
|
||
|
|
}
|
||
|
|
else /* remaining less than 8 bits */
|
||
|
|
{
|
||
|
|
b = (inp[0]<<inpgap)&0xff;
|
||
|
|
if (bitrem) c->data[byteoff++] |= b>>bitrem;
|
||
|
|
else c->data[byteoff++] = b;
|
||
|
|
bitoff += (unsigned int)bits;
|
||
|
|
if (bitoff==WHIRLPOOL_BBLOCK)
|
||
|
|
{
|
||
|
|
whirlpool_block(c,c->data,1);
|
||
|
|
byteoff = 0;
|
||
|
|
bitoff %= WHIRLPOOL_BBLOCK;
|
||
|
|
}
|
||
|
|
if (bitrem) c->data[byteoff] = b<<(8-bitrem);
|
||
|
|
bits = 0;
|
||
|
|
}
|
||
|
|
c->bitoff = bitoff;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
int WHIRLPOOL_Final (unsigned char *md,WHIRLPOOL_CTX *c)
|
||
|
|
{
|
||
|
|
unsigned int bitoff = c->bitoff,
|
||
|
|
byteoff = bitoff/8;
|
||
|
|
size_t i,j,v;
|
||
|
|
unsigned char *p;
|
||
|
|
|
||
|
|
bitoff %= 8;
|
||
|
|
if (bitoff) c->data[byteoff] |= 0x80>>bitoff;
|
||
|
|
else c->data[byteoff] = 0x80;
|
||
|
|
byteoff++;
|
||
|
|
|
||
|
|
/* pad with zeros */
|
||
|
|
if (byteoff > (WHIRLPOOL_BBLOCK/8-WHIRLPOOL_COUNTER))
|
||
|
|
{
|
||
|
|
if (byteoff<WHIRLPOOL_BBLOCK/8)
|
||
|
|
memset(&c->data[byteoff],0,WHIRLPOOL_BBLOCK/8-byteoff);
|
||
|
|
whirlpool_block(c,c->data,1);
|
||
|
|
byteoff = 0;
|
||
|
|
}
|
||
|
|
if (byteoff < (WHIRLPOOL_BBLOCK/8-WHIRLPOOL_COUNTER))
|
||
|
|
memset(&c->data[byteoff],0,
|
||
|
|
(WHIRLPOOL_BBLOCK/8-WHIRLPOOL_COUNTER)-byteoff);
|
||
|
|
/* smash 256-bit c->bitlen in big-endian order */
|
||
|
|
p = &c->data[WHIRLPOOL_BBLOCK/8-1]; /* last byte in c->data */
|
||
|
|
for(i=0;i<WHIRLPOOL_COUNTER/sizeof(size_t);i++)
|
||
|
|
for(v=c->bitlen[i],j=0;j<sizeof(size_t);j++,v>>=8)
|
||
|
|
*p-- = (unsigned char)(v&0xff);
|
||
|
|
|
||
|
|
whirlpool_block(c,c->data,1);
|
||
|
|
|
||
|
|
if (md) {
|
||
|
|
memcpy(md,c->H.c,WHIRLPOOL_DIGEST_LENGTH);
|
||
|
|
memset(c,0,sizeof(*c));
|
||
|
|
return(1);
|
||
|
|
}
|
||
|
|
return(0);
|
||
|
|
}
|
||
|
|
|
||
|
|
unsigned char *WHIRLPOOL(const void *inp, size_t bytes,unsigned char *md)
|
||
|
|
{
|
||
|
|
WHIRLPOOL_CTX ctx;
|
||
|
|
static unsigned char m[WHIRLPOOL_DIGEST_LENGTH];
|
||
|
|
|
||
|
|
if (md == NULL) md=m;
|
||
|
|
WHIRLPOOL_Init(&ctx);
|
||
|
|
WHIRLPOOL_Update(&ctx,inp,bytes);
|
||
|
|
WHIRLPOOL_Final(md,&ctx);
|
||
|
|
return(md);
|
||
|
|
}
|