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Speedup Mifare Plus Attack v2.2 (cleanup code)

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This commit is contained in:
Gabriele Gristina 2016-10-21 01:06:57 +02:00
parent 0325c12f35
commit bbcd41a6e5
1 changed files with 19 additions and 40 deletions
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59
client/cmdhfmfhard.c
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@ -95,13 +95,6 @@ typedef struct noncelist {
float score1, score2; float score1, score2;
} noncelist_t; } noncelist_t;
typedef struct check_args {
uint32_t next_fivehundred;
uint32_t total_num_nonces;
uint32_t total_added_nonces;
uint32_t idx;
} check_args_t;
static size_t nonces_to_bruteforce = 0; static size_t nonces_to_bruteforce = 0;
static noncelistentry_t *brute_force_nonces[256]; static noncelistentry_t *brute_force_nonces[256];
static uint32_t cuid = 0; static uint32_t cuid = 0;
@ -147,9 +140,8 @@ bool cracking = false;
bool field_off = false; bool field_off = false;
pthread_t thread_check; pthread_t thread_check;
check_args_t cargs;
static void* check_thread(void*); static void* check_thread();
static bool generate_candidates(uint16_t, uint16_t); static bool generate_candidates(uint16_t, uint16_t);
static bool brute_force(void); static bool brute_force(void);
@ -877,23 +869,19 @@ static int acquire_nonces(uint8_t blockNo, uint8_t keyType, uint8_t *key, uint8_
if (thread_check_started) { if (thread_check_started) {
if (thread_check_done) { if (thread_check_done) {
//printf ("Detect check thread end ..\n");
pthread_join (thread_check, 0); pthread_join (thread_check, 0);
idx = cargs.idx;
thread_check_started = thread_check_done = false; thread_check_started = thread_check_done = false;
} }
} else { } else {
//printf ("Starting check thread ...\n"); if (total_added_nonces >= MIN_NONCES_REQUIRED)
memset (&cargs, 0, sizeof (cargs)); {
num_good_first_bytes = estimate_second_byte_sum();
// set arguments if (total_added_nonces > (NONCES_TRIGGER*idx) || num_good_first_bytes >= GOOD_BYTES_REQUIRED) {
cargs.next_fivehundred = next_fivehundred; pthread_create (&thread_check, NULL, check_thread, NULL);
cargs.total_num_nonces = total_num_nonces; thread_check_started = true;
cargs.total_added_nonces = total_added_nonces; idx++;
cargs.idx = idx; }
}
pthread_create (&thread_check, NULL, check_thread, (void *)&cargs);
thread_check_started = true;
} }
} }
@ -1676,28 +1664,19 @@ out:
return key; return key;
} }
static void* check_thread(void* x) static void* check_thread()
{ {
check_args_t *cargs = (check_args_t *)x;
// printf("first_byte_num = %d, first_byte_Sum = %d\n", first_byte_num, first_byte_Sum);
num_good_first_bytes = estimate_second_byte_sum(); num_good_first_bytes = estimate_second_byte_sum();
if (cargs->total_added_nonces > MIN_NONCES_REQUIRED) clock_t time1 = clock();
{ cracking = generate_candidates(first_byte_Sum, nonces[best_first_bytes[0]].Sum8_guess);
if (cargs->total_added_nonces > (NONCES_TRIGGER*cargs->idx) || num_good_first_bytes >= GOOD_BYTES_REQUIRED) { time1 = clock() - time1;
clock_t time1 = clock(); if ( time1 > 0 ) PrintAndLog("Time for generating key candidates list: %1.0f seconds", ((float)time1)/CLOCKS_PER_SEC);
cracking = generate_candidates(first_byte_Sum, nonces[best_first_bytes[0]].Sum8_guess); if (known_target_key != -1) brute_force();
time1 = clock() - time1;
if ( time1 > 0 ) PrintAndLog("Time for generating key candidates list: %1.0f seconds", ((float)time1)/CLOCKS_PER_SEC);
if (known_target_key != -1) brute_force();
cargs->idx++;
}
if (cracking) { if (cracking) {
field_off = brute_force(); // switch off field with next SendCommand and then finish field_off = brute_force(); // switch off field with next SendCommand and then finish
cracking = false; cracking = false;
}
} }
thread_check_done = true; thread_check_done = true;