/**
* @buf - [in] msg input
* @outbuf - [out] hash output
*/
static void get_hash(u08b_t *inbuf, u08b_t *outbuf)
{
Skein1024_Ctxt_t ctx;
Skein1024_Init(&ctx, 1024);
Skein1024_Update(&ctx, inbuf, strlen((char *)inbuf));
Skein1024_Final(&ctx, outbuf);
}
int main(int argc, char *argv[]) {
struct timeval tv;
gettimeofday(&tv, NULL);
srand(tv.tv_sec ^ tv.tv_usec + getpid() + (getppid() << 12));
Skein1024_Ctxt_t ctx;
uint8_t hash[128];
int best = 1024;
int current;
time_t time_ref = time(NULL);
int nhash = 0;
int input_length = 0;
char input[101];
while (1) {
// Only refresh the input with a new random value every so often
if (nhash % INC_BEFORE_NEW == 0) {
input_length = new_input(input);
} else {
inc_input(input, input_length);
}
Skein1024_Init(&ctx, 1024);
Skein1024_Update(&ctx, (uint8_t *) input, input_length);
Skein1024_Final(&ctx, hash);
++nhash;
// Rate reporting
// Overflow, stay accurate
if (nhash == 0)
time_ref = time(NULL);
else if (nhash % HASH_BEFORE_REPORT == 0) {
double khash = nhash / 1000.0;
fprintf(stderr, "%f khash/s\n", khash / (double)(time(NULL) - time_ref));
}
current = bitdiff(hash, oracle);
if (current < best) {
best = current;
printf("%d %s\n", best, input);
fflush(stdout);
}
}
return 0;
}
static inline void checkHash() {
assert(Skein1024_Init(&ctx, 1024) == SKEIN_SUCCESS);
assert(Skein1024_Update(&ctx, plaintext, DEPTH) == SKEIN_SUCCESS);
assert(Skein1024_Final(&ctx, hash) == SKEIN_SUCCESS);
unsigned int bits_one = 0;
for (unsigned int i = 0; i < 1024/8; i++) {
u08b_t bits = hash[i] ^ XOR[i];
for (unsigned char j = 0; j < 8; j++)
bits_one += (bits >> j) & 1;
}
if (bits_one < low_bits) {
low_bits = bits_one;
fprintf(stdout, "New best: \"%s\" %d\n", plaintext, bits_one);
fflush(stdout);
}
// count++; if (count > 10000000) exit(0);
}
int skeinFinal(SkeinCtx_t* ctx, uint8_t* hash)
{
int ret = SKEIN_FAIL;
Skein_Assert(ctx, SKEIN_FAIL);
switch (ctx->skeinSize) {
case Skein256:
ret = Skein_256_Final(&ctx->m.s256, (u08b_t*)hash);
break;
case Skein512:
ret = Skein_512_Final(&ctx->m.s512, (u08b_t*)hash);
break;
case Skein1024:
ret = Skein1024_Final(&ctx->m.s1024, (u08b_t*)hash);
break;
}
return ret;
}
