diff options
Diffstat (limited to 'openssl/crypto/whrlpool/wp_dgst.c')
| -rw-r--r-- | openssl/crypto/whrlpool/wp_dgst.c | 370 |
1 files changed, 181 insertions, 189 deletions
diff --git a/openssl/crypto/whrlpool/wp_dgst.c b/openssl/crypto/whrlpool/wp_dgst.c index 7e28bef51..e33bb4f83 100644 --- a/openssl/crypto/whrlpool/wp_dgst.c +++ b/openssl/crypto/whrlpool/wp_dgst.c @@ -56,210 +56,202 @@ #include <string.h> fips_md_init(WHIRLPOOL) - { - memset (c,0,sizeof(*c)); - return(1); - } +{ + 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; +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); + while (bytes >= chunk) { + WHIRLPOOL_BitUpdate(c, inp, chunk * 8); + bytes -= chunk; + inp += chunk; + } + if (bytes) + WHIRLPOOL_BitUpdate(c, inp, bytes * 8); - return(1); - } + 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))); - } +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; + 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 */ + 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; + { + /*- + 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 + 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; - } - } - } + 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; +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++; + 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); + /* 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); + 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); - } + 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]; +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); - } + if (md == NULL) + md = m; + WHIRLPOOL_Init(&ctx); + WHIRLPOOL_Update(&ctx, inp, bytes); + WHIRLPOOL_Final(md, &ctx); + return (md); +} |