Make bcrypt code more standard.
This commit is contained in:
Maarten Billemont
@@ -31,11 +31,10 @@
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*
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*/
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#include <sys/types.h>
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#include <ctype.h>
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#include <errno.h>
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#include <pwd.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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@@ -198,75 +197,6 @@ bcrypt_hashpass(const char *key, const uint8_t *salt, char *encrypted,
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return -1;
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}
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/*
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* user friendly functions
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*/
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static int
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bcrypt_newhash(const char *pass, int log_rounds, char *hash, size_t hashlen) {
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uint8_t salt[BCRYPT_SALTSPACE];
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if (bcrypt_initsalt( log_rounds, salt, sizeof( salt ) ) != 0)
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return -1;
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if (bcrypt_hashpass( pass, salt, hash, hashlen ) != 0)
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return -1;
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bzero( salt, sizeof( salt ) );
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return 0;
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}
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static int __unused
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bcrypt_checkpass(const char *pass, const char *goodhash) {
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char hash[BCRYPT_HASHSPACE];
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if (bcrypt_hashpass( pass, (const uint8_t *)goodhash, hash, sizeof( hash ) ) != 0)
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return -1;
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if (strlen( hash ) != strlen( goodhash ) ||
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timingsafe_bcmp( hash, goodhash, strlen( goodhash ) ) != 0) {
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errno = EACCES;
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return -1;
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}
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bzero( hash, sizeof( hash ) );
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return 0;
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}
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/*
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* Measure this system's performance by measuring the time for 8 rounds.
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* We are aiming for something that takes around 0.1s, but not too much over.
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*/
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static int __unused
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_bcrypt_autorounds(void) {
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struct timespec before, after;
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int r = 8;
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char buf[_PASSWORD_LEN];
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time_t duration;
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clock_gettime( CLOCK_THREAD_CPUTIME_ID, &before );
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bcrypt_newhash( "testpassword", r, buf, sizeof( buf ) );
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clock_gettime( CLOCK_THREAD_CPUTIME_ID, &after );
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duration = after.tv_sec - before.tv_sec;
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duration *= 1000000;
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duration += (after.tv_nsec - before.tv_nsec) / 1000;
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/* too quick? slow it down. */
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while (r < 16 && duration <= 60000) {
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r += 1;
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duration *= 2;
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}
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/* too slow? speed it up. */
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while (r > 6 && duration > 120000) {
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r -= 1;
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duration /= 2;
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}
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return r;
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}
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/*
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* internal utilities
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*/
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@@ -31,6 +31,8 @@
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdint.h>
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#ifndef _BLF_H_
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#define _BLF_H_
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@@ -47,8 +49,8 @@
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/* Blowfish context */
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typedef struct BlowfishContext {
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u_int32_t S[4][256]; /* S-Boxes */
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u_int32_t P[BLF_N + 2]; /* Subkeys */
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uint32_t S[4][256]; /* S-Boxes */
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uint32_t P[BLF_N + 2]; /* Subkeys */
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} blf_ctx;
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/* Raw access to customized Blowfish
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@@ -57,25 +59,25 @@ typedef struct BlowfishContext {
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* Blowfish_expand0state( state, key, keylen )
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*/
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void Blowfish_encipher(blf_ctx *, u_int32_t *, u_int32_t *);
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void Blowfish_decipher(blf_ctx *, u_int32_t *, u_int32_t *);
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void Blowfish_encipher(blf_ctx *, uint32_t *, uint32_t *);
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void Blowfish_decipher(blf_ctx *, uint32_t *, uint32_t *);
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void Blowfish_initstate(blf_ctx *);
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void Blowfish_expand0state(blf_ctx *, const u_int8_t *, u_int16_t);
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void Blowfish_expandstate(blf_ctx *, const u_int8_t *, u_int16_t, const u_int8_t *, u_int16_t);
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void Blowfish_expand0state(blf_ctx *, const uint8_t *, u_int16_t);
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void Blowfish_expandstate(blf_ctx *, const uint8_t *, u_int16_t, const uint8_t *, u_int16_t);
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/* Standard Blowfish */
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void blf_key(blf_ctx *, const u_int8_t *, u_int16_t);
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void blf_enc(blf_ctx *, u_int32_t *, u_int16_t);
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void blf_dec(blf_ctx *, u_int32_t *, u_int16_t);
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void blf_key(blf_ctx *, const uint8_t *, u_int16_t);
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void blf_enc(blf_ctx *, uint32_t *, u_int16_t);
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void blf_dec(blf_ctx *, uint32_t *, u_int16_t);
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void blf_ecb_encrypt(blf_ctx *, u_int8_t *, u_int32_t);
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void blf_ecb_decrypt(blf_ctx *, u_int8_t *, u_int32_t);
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void blf_ecb_encrypt(blf_ctx *, uint8_t *, uint32_t);
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void blf_ecb_decrypt(blf_ctx *, uint8_t *, uint32_t);
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void blf_cbc_encrypt(blf_ctx *, u_int8_t *, u_int8_t *, u_int32_t);
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void blf_cbc_decrypt(blf_ctx *, u_int8_t *, u_int8_t *, u_int32_t);
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void blf_cbc_encrypt(blf_ctx *, uint8_t *, uint8_t *, uint32_t);
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void blf_cbc_decrypt(blf_ctx *, uint8_t *, uint8_t *, uint32_t);
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/* Converts u_int8_t to u_int32_t */
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u_int32_t Blowfish_stream2word(const u_int8_t *, u_int16_t, u_int16_t *);
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/* Converts uint8_t to uint32_t */
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uint32_t Blowfish_stream2word(const uint8_t *, u_int16_t, u_int16_t *);
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#endif
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@@ -63,12 +63,12 @@
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#define BLFRND(s,p,i,j,n) (i ^= F(s,j) ^ (p)[n])
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void
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Blowfish_encipher(blf_ctx *c, u_int32_t *xl, u_int32_t *xr)
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Blowfish_encipher(blf_ctx *c, uint32_t *xl, uint32_t *xr)
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{
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u_int32_t Xl;
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u_int32_t Xr;
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u_int32_t *s = c->S[0];
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u_int32_t *p = c->P;
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uint32_t Xl;
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uint32_t Xr;
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uint32_t *s = c->S[0];
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uint32_t *p = c->P;
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Xl = *xl;
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Xr = *xr;
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@@ -88,12 +88,12 @@ Blowfish_encipher(blf_ctx *c, u_int32_t *xl, u_int32_t *xr)
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}
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void
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Blowfish_decipher(blf_ctx *c, u_int32_t *xl, u_int32_t *xr)
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Blowfish_decipher(blf_ctx *c, uint32_t *xl, uint32_t *xr)
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{
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u_int32_t Xl;
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u_int32_t Xr;
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u_int32_t *s = c->S[0];
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u_int32_t *p = c->P;
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uint32_t Xl;
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uint32_t Xr;
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uint32_t *s = c->S[0];
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uint32_t *p = c->P;
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Xl = *xl;
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Xr = *xr;
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@@ -391,13 +391,13 @@ Blowfish_initstate(blf_ctx *c)
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*c = initstate;
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}
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u_int32_t
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Blowfish_stream2word(const u_int8_t *data, u_int16_t databytes,
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u_int16_t *current)
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uint32_t
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Blowfish_stream2word(const uint8_t *data, uint16_t databytes,
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uint16_t *current)
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{
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u_int8_t i;
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u_int16_t j;
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u_int32_t temp;
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uint8_t i;
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uint16_t j;
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uint32_t temp;
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temp = 0x00000000;
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j = *current;
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@@ -413,14 +413,14 @@ Blowfish_stream2word(const u_int8_t *data, u_int16_t databytes,
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}
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void
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Blowfish_expand0state(blf_ctx *c, const u_int8_t *key, u_int16_t keybytes)
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Blowfish_expand0state(blf_ctx *c, const uint8_t *key, uint16_t keybytes)
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{
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u_int16_t i;
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u_int16_t j;
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u_int16_t k;
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u_int32_t temp;
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u_int32_t datal;
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u_int32_t datar;
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uint16_t i;
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uint16_t j;
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uint16_t k;
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uint32_t temp;
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uint32_t datal;
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uint32_t datar;
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j = 0;
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for (i = 0; i < BLF_N + 2; i++) {
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@@ -451,15 +451,15 @@ Blowfish_expand0state(blf_ctx *c, const u_int8_t *key, u_int16_t keybytes)
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void
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Blowfish_expandstate(blf_ctx *c, const u_int8_t *data, u_int16_t databytes,
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const u_int8_t *key, u_int16_t keybytes)
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Blowfish_expandstate(blf_ctx *c, const uint8_t *data, uint16_t databytes,
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const uint8_t *key, uint16_t keybytes)
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{
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u_int16_t i;
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u_int16_t j;
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u_int16_t k;
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u_int32_t temp;
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u_int32_t datal;
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u_int32_t datar;
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uint16_t i;
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uint16_t j;
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uint16_t k;
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uint32_t temp;
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uint32_t datal;
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uint32_t datar;
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j = 0;
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for (i = 0; i < BLF_N + 2; i++) {
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@@ -494,7 +494,7 @@ Blowfish_expandstate(blf_ctx *c, const u_int8_t *data, u_int16_t databytes,
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}
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void
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__unused blf_key(blf_ctx *c, const u_int8_t *k, u_int16_t len)
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__unused blf_key(blf_ctx *c, const uint8_t *k, uint16_t len)
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{
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/* Initialize S-boxes and subkeys with Pi */
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Blowfish_initstate(c);
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@@ -504,10 +504,10 @@ __unused blf_key(blf_ctx *c, const u_int8_t *k, u_int16_t len)
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}
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void
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blf_enc(blf_ctx *c, u_int32_t *data, u_int16_t blocks)
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blf_enc(blf_ctx *c, uint32_t *data, uint16_t blocks)
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{
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u_int32_t *d;
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u_int16_t i;
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uint32_t *d;
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uint16_t i;
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d = data;
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for (i = 0; i < blocks; i++) {
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@@ -517,10 +517,10 @@ blf_enc(blf_ctx *c, u_int32_t *data, u_int16_t blocks)
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}
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void
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__unused blf_dec(blf_ctx *c, u_int32_t *data, u_int16_t blocks)
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__unused blf_dec(blf_ctx *c, uint32_t *data, uint16_t blocks)
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{
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u_int32_t *d;
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u_int16_t i;
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uint32_t *d;
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uint16_t i;
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d = data;
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for (i = 0; i < blocks; i++) {
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@@ -530,111 +530,111 @@ __unused blf_dec(blf_ctx *c, u_int32_t *data, u_int16_t blocks)
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}
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void
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__unused blf_ecb_encrypt(blf_ctx *c, u_int8_t *data, u_int32_t len)
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__unused blf_ecb_encrypt(blf_ctx *c, uint8_t *data, uint32_t len)
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{
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u_int32_t l, r;
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u_int32_t i;
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uint32_t l, r;
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uint32_t i;
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for (i = 0; i < len; i += 8) {
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l = (u_int32_t)data[0] << 24 | (u_int32_t)data[1] << 16 | (u_int32_t)data[2] << 8 | (u_int32_t)data[3];
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r = (u_int32_t)data[4] << 24 | (u_int32_t)data[5] << 16 | (u_int32_t)data[6] << 8 | (u_int32_t)data[7];
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l = (uint32_t)data[0] << 24 | (uint32_t)data[1] << 16 | (uint32_t)data[2] << 8 | (uint32_t)data[3];
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r = (uint32_t)data[4] << 24 | (uint32_t)data[5] << 16 | (uint32_t)data[6] << 8 | (uint32_t)data[7];
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Blowfish_encipher(c, &l, &r);
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data[0] = (u_int8_t)(l >> 24 & 0xff);
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data[1] = (u_int8_t)(l >> 16 & 0xff);
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data[2] = (u_int8_t)(l >> 8 & 0xff);
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data[3] = (u_int8_t)(l & 0xff);
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data[4] = (u_int8_t)(r >> 24 & 0xff);
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data[5] = (u_int8_t)(r >> 16 & 0xff);
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data[6] = (u_int8_t)(r >> 8 & 0xff);
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data[7] = (u_int8_t)(r & 0xff);
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data[0] = (uint8_t)(l >> 24 & 0xff);
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data[1] = (uint8_t)(l >> 16 & 0xff);
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data[2] = (uint8_t)(l >> 8 & 0xff);
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data[3] = (uint8_t)(l & 0xff);
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data[4] = (uint8_t)(r >> 24 & 0xff);
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data[5] = (uint8_t)(r >> 16 & 0xff);
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data[6] = (uint8_t)(r >> 8 & 0xff);
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data[7] = (uint8_t)(r & 0xff);
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data += 8;
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}
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}
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void
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__unused blf_ecb_decrypt(blf_ctx *c, u_int8_t *data, u_int32_t len)
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__unused blf_ecb_decrypt(blf_ctx *c, uint8_t *data, uint32_t len)
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{
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u_int32_t l, r;
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u_int32_t i;
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uint32_t l, r;
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uint32_t i;
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for (i = 0; i < len; i += 8) {
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l = (u_int32_t)data[0] << 24 | (u_int32_t)data[1] << 16 | (u_int32_t)data[2] << 8 | (u_int32_t)data[3];
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r = (u_int32_t)data[4] << 24 | (u_int32_t)data[5] << 16 | (u_int32_t)data[6] << 8 | (u_int32_t)data[7];
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l = (uint32_t)data[0] << 24 | (uint32_t)data[1] << 16 | (uint32_t)data[2] << 8 | (uint32_t)data[3];
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r = (uint32_t)data[4] << 24 | (uint32_t)data[5] << 16 | (uint32_t)data[6] << 8 | (uint32_t)data[7];
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Blowfish_decipher(c, &l, &r);
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data[0] = (u_int8_t)(l >> 24 & 0xff);
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data[1] = (u_int8_t)(l >> 16 & 0xff);
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data[2] = (u_int8_t)(l >> 8 & 0xff);
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data[3] = (u_int8_t)(l & 0xff);
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data[4] = (u_int8_t)(r >> 24 & 0xff);
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data[5] = (u_int8_t)(r >> 16 & 0xff);
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data[6] = (u_int8_t)(r >> 8 & 0xff);
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data[7] = (u_int8_t)(r & 0xff);
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data[0] = (uint8_t)(l >> 24 & 0xff);
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data[1] = (uint8_t)(l >> 16 & 0xff);
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data[2] = (uint8_t)(l >> 8 & 0xff);
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data[3] = (uint8_t)(l & 0xff);
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data[4] = (uint8_t)(r >> 24 & 0xff);
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data[5] = (uint8_t)(r >> 16 & 0xff);
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data[6] = (uint8_t)(r >> 8 & 0xff);
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data[7] = (uint8_t)(r & 0xff);
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data += 8;
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}
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}
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void
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__unused blf_cbc_encrypt(blf_ctx *c, u_int8_t *iv, u_int8_t *data, u_int32_t len)
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__unused blf_cbc_encrypt(blf_ctx *c, uint8_t *iv, uint8_t *data, uint32_t len)
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{
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u_int32_t l, r;
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u_int32_t i, j;
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uint32_t l, r;
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uint32_t i, j;
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for (i = 0; i < len; i += 8) {
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for (j = 0; j < 8; j++)
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data[j] ^= iv[j];
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l = (u_int32_t)data[0] << 24 | (u_int32_t)data[1] << 16 | (u_int32_t)data[2] << 8 | (u_int32_t)data[3];
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r = (u_int32_t)data[4] << 24 | (u_int32_t)data[5] << 16 | (u_int32_t)data[6] << 8 | (u_int32_t)data[7];
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l = (uint32_t)data[0] << 24 | (uint32_t)data[1] << 16 | (uint32_t)data[2] << 8 | (uint32_t)data[3];
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r = (uint32_t)data[4] << 24 | (uint32_t)data[5] << 16 | (uint32_t)data[6] << 8 | (uint32_t)data[7];
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Blowfish_encipher(c, &l, &r);
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data[0] = (u_int8_t)(l >> 24 & 0xff);
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data[1] = (u_int8_t)(l >> 16 & 0xff);
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data[2] = (u_int8_t)(l >> 8 & 0xff);
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data[3] = (u_int8_t)(l & 0xff);
|
||||
data[4] = (u_int8_t)(r >> 24 & 0xff);
|
||||
data[5] = (u_int8_t)(r >> 16 & 0xff);
|
||||
data[6] = (u_int8_t)(r >> 8 & 0xff);
|
||||
data[7] = (u_int8_t)(r & 0xff);
|
||||
data[0] = (uint8_t)(l >> 24 & 0xff);
|
||||
data[1] = (uint8_t)(l >> 16 & 0xff);
|
||||
data[2] = (uint8_t)(l >> 8 & 0xff);
|
||||
data[3] = (uint8_t)(l & 0xff);
|
||||
data[4] = (uint8_t)(r >> 24 & 0xff);
|
||||
data[5] = (uint8_t)(r >> 16 & 0xff);
|
||||
data[6] = (uint8_t)(r >> 8 & 0xff);
|
||||
data[7] = (uint8_t)(r & 0xff);
|
||||
iv = data;
|
||||
data += 8;
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
__unused blf_cbc_decrypt(blf_ctx *c, u_int8_t *iva, u_int8_t *data, u_int32_t len)
|
||||
__unused blf_cbc_decrypt(blf_ctx *c, uint8_t *iva, uint8_t *data, uint32_t len)
|
||||
{
|
||||
u_int32_t l, r;
|
||||
u_int8_t *iv;
|
||||
u_int32_t i, j;
|
||||
uint32_t l, r;
|
||||
uint8_t *iv;
|
||||
uint32_t i, j;
|
||||
|
||||
iv = data + len - 16;
|
||||
data = data + len - 8;
|
||||
for (i = len - 8; i >= 8; i -= 8) {
|
||||
l = (u_int32_t)data[0] << 24 | (u_int32_t)data[1] << 16 | (u_int32_t)data[2] << 8 | (u_int32_t)data[3];
|
||||
r = (u_int32_t)data[4] << 24 | (u_int32_t)data[5] << 16 | (u_int32_t)data[6] << 8 | (u_int32_t)data[7];
|
||||
l = (uint32_t)data[0] << 24 | (uint32_t)data[1] << 16 | (uint32_t)data[2] << 8 | (uint32_t)data[3];
|
||||
r = (uint32_t)data[4] << 24 | (uint32_t)data[5] << 16 | (uint32_t)data[6] << 8 | (uint32_t)data[7];
|
||||
Blowfish_decipher(c, &l, &r);
|
||||
data[0] = (u_int8_t)(l >> 24 & 0xff);
|
||||
data[1] = (u_int8_t)(l >> 16 & 0xff);
|
||||
data[2] = (u_int8_t)(l >> 8 & 0xff);
|
||||
data[3] = (u_int8_t)(l & 0xff);
|
||||
data[4] = (u_int8_t)(r >> 24 & 0xff);
|
||||
data[5] = (u_int8_t)(r >> 16 & 0xff);
|
||||
data[6] = (u_int8_t)(r >> 8 & 0xff);
|
||||
data[7] = (u_int8_t)(r & 0xff);
|
||||
data[0] = (uint8_t)(l >> 24 & 0xff);
|
||||
data[1] = (uint8_t)(l >> 16 & 0xff);
|
||||
data[2] = (uint8_t)(l >> 8 & 0xff);
|
||||
data[3] = (uint8_t)(l & 0xff);
|
||||
data[4] = (uint8_t)(r >> 24 & 0xff);
|
||||
data[5] = (uint8_t)(r >> 16 & 0xff);
|
||||
data[6] = (uint8_t)(r >> 8 & 0xff);
|
||||
data[7] = (uint8_t)(r & 0xff);
|
||||
for (j = 0; j < 8; j++)
|
||||
data[j] ^= iv[j];
|
||||
iv -= 8;
|
||||
data -= 8;
|
||||
}
|
||||
l = (u_int32_t)data[0] << 24 | (u_int32_t)data[1] << 16 | (u_int32_t)data[2] << 8 | (u_int32_t)data[3];
|
||||
r = (u_int32_t)data[4] << 24 | (u_int32_t)data[5] << 16 | (u_int32_t)data[6] << 8 | (u_int32_t)data[7];
|
||||
l = (uint32_t)data[0] << 24 | (uint32_t)data[1] << 16 | (uint32_t)data[2] << 8 | (uint32_t)data[3];
|
||||
r = (uint32_t)data[4] << 24 | (uint32_t)data[5] << 16 | (uint32_t)data[6] << 8 | (uint32_t)data[7];
|
||||
Blowfish_decipher(c, &l, &r);
|
||||
data[0] = (u_int8_t)(l >> 24 & 0xff);
|
||||
data[1] = (u_int8_t)(l >> 16 & 0xff);
|
||||
data[2] = (u_int8_t)(l >> 8 & 0xff);
|
||||
data[3] = (u_int8_t)(l & 0xff);
|
||||
data[4] = (u_int8_t)(r >> 24 & 0xff);
|
||||
data[5] = (u_int8_t)(r >> 16 & 0xff);
|
||||
data[6] = (u_int8_t)(r >> 8 & 0xff);
|
||||
data[7] = (u_int8_t)(r & 0xff);
|
||||
data[0] = (uint8_t)(l >> 24 & 0xff);
|
||||
data[1] = (uint8_t)(l >> 16 & 0xff);
|
||||
data[2] = (uint8_t)(l >> 8 & 0xff);
|
||||
data[3] = (uint8_t)(l & 0xff);
|
||||
data[4] = (uint8_t)(r >> 24 & 0xff);
|
||||
data[5] = (uint8_t)(r >> 16 & 0xff);
|
||||
data[6] = (uint8_t)(r >> 8 & 0xff);
|
||||
data[7] = (uint8_t)(r & 0xff);
|
||||
for (j = 0; j < 8; j++)
|
||||
data[j] ^= iva[j];
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user