static partial_indexed_statelist_t statelist_bitflip;
static statelist_t *candidates = NULL;
+static bool generate_candidates(uint16_t, uint16_t);
+static bool brute_force(void);
+
static int add_nonce(uint32_t nonce_enc, uint8_t par_enc)
{
uint8_t first_byte = nonce_enc >> 24;
uint32_t total_num_nonces = 0;
uint32_t next_fivehundred = 500;
uint32_t total_added_nonces = 0;
+ uint32_t idx = 1;
FILE *fnonces = NULL;
UsbCommand resp;
total_added_nonces,
CONFIDENCE_THRESHOLD * 100.0,
num_good_first_bytes);
+
+ if (total_added_nonces > (2500*idx)) {
+ clock_t time1 = clock();
+ field_off = generate_candidates(first_byte_Sum, nonces[best_first_bytes[0]].Sum8_guess);
+ 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();
+ idx++;
+ }
}
if (num_good_first_bytes >= GOOD_BYTES_REQUIRED) {
field_off = true; // switch off field with next SendCommand and then finish
}
+
+ if (field_off) {
+ field_off = finished = brute_force();
+ }
}
if (!initialize) {
return new_candidates;
}
-static void TestIfKeyExists(uint64_t key)
+static bool TestIfKeyExists(uint64_t key)
{
struct Crypto1State *pcs;
pcs = crypto1_create(key);
fprintf(fstats, "1\n");
}
crypto1_destroy(pcs);
- return;
+ return true;
}
}
fprintf(fstats, "0\n");
}
crypto1_destroy(pcs);
+
+ return false;
}
-static void generate_candidates(uint16_t sum_a0, uint16_t sum_a8)
+static bool generate_candidates(uint16_t sum_a0, uint16_t sum_a8)
{
printf("Generating crypto1 state candidates... \n");
}
}
}
+
printf("Number of possible keys with Sum(a0) = %d: %"PRIu64" (2^%1.1f)\n", sum_a0, maximum_states, log(maximum_states)/log(2.0));
init_statelist_cache();
}
}
-
maximum_states = 0;
for (statelist_t *sl = candidates; sl != NULL; sl = sl->next) {
maximum_states += (uint64_t)sl->len[ODD_STATE] * sl->len[EVEN_STATE];
}
- printf("Number of remaining possible keys: %"PRIu64" (2^%1.1f)\n", maximum_states, log(maximum_states)/log(2.0));
+ float kcalc = log(maximum_states)/log(2.0);
+ printf("Number of remaining possible keys: %"PRIu64" (2^%1.1f)\n", maximum_states, kcalc);
if (write_stats) {
if (maximum_states != 0) {
- fprintf(fstats, "%1.1f;", log(maximum_states)/log(2.0));
+ fprintf(fstats, "%1.1f;", kcalc);
} else {
fprintf(fstats, "%1.1f;", 0.0);
}
}
+ if (kcalc < 39.00f) return true;
+
+ return false;
}
static void free_candidates_memory(statelist_t *sl)
const bitslice_value_t odd_feedback = odd_feedback_bit ? bs_ones.value : bs_zeroes.value;
for(size_t block_idx = 0; block_idx < bitsliced_blocks; ++block_idx){
- const bitslice_t const * restrict bitsliced_even_state = bitsliced_even_states[block_idx];
+ bitslice_t const * restrict bitsliced_even_state = bitsliced_even_states[block_idx];
size_t state_idx;
// set even bits
for(state_idx = 0; state_idx < STATE_SIZE-ROLLBACK_SIZE; state_idx+=2){
return NULL;
}
-static void brute_force(void)
+static bool brute_force(void)
{
+ bool ret = false;
if (known_target_key != -1) {
PrintAndLog("Looking for known target key in remaining key space...");
- TestIfKeyExists(known_target_key);
+ ret = TestIfKeyExists(known_target_key);
} else {
- PrintAndLog("Brute force phase starting.");
- time_t start, end;
- time(&start);
- keys_found = 0;
+ PrintAndLog("Brute force phase starting.");
+ time_t start, end;
+ time(&start);
+ keys_found = 0;
foundkey = 0;
-
- crypto1_bs_init();
- PrintAndLog("Using %u-bit bitslices", MAX_BITSLICES);
- PrintAndLog("Bitslicing best_first_byte^uid[3] (rollback byte): %02x...", best_first_bytes[0]^(cuid>>24));
- // convert to 32 bit little-endian
+ crypto1_bs_init();
+
+ PrintAndLog("Using %u-bit bitslices", MAX_BITSLICES);
+ PrintAndLog("Bitslicing best_first_byte^uid[3] (rollback byte): %02x...", best_first_bytes[0]^(cuid>>24));
+ // convert to 32 bit little-endian
crypto1_bs_bitslice_value32((best_first_bytes[0]<<24)^cuid, bitsliced_rollback_byte, 8);
-
- PrintAndLog("Bitslicing nonces...");
- for(size_t tests = 0; tests < NONCE_TESTS; tests++){
- uint32_t test_nonce = brute_force_nonces[tests]->nonce_enc;
- uint8_t test_parity = brute_force_nonces[tests]->par_enc;
- // pre-xor the uid into the decrypted nonces, and also pre-xor the cuid parity into the encrypted parity bits - otherwise an exta xor is required in the decryption routine
- crypto1_bs_bitslice_value32(cuid^test_nonce, bitsliced_encrypted_nonces[tests], 32);
- // convert to 32 bit little-endian
- crypto1_bs_bitslice_value32(rev32( ~(test_parity ^ ~(parity(cuid>>24 & 0xff)<<3 | parity(cuid>>16 & 0xff)<<2 | parity(cuid>>8 & 0xff)<<1 | parity(cuid&0xff)))), bitsliced_encrypted_parity_bits[tests], 4);
+
+ PrintAndLog("Bitslicing nonces...");
+ for(size_t tests = 0; tests < NONCE_TESTS; tests++){
+ uint32_t test_nonce = brute_force_nonces[tests]->nonce_enc;
+ uint8_t test_parity = brute_force_nonces[tests]->par_enc;
+ // pre-xor the uid into the decrypted nonces, and also pre-xor the cuid parity into the encrypted parity bits - otherwise an exta xor is required in the decryption routine
+ crypto1_bs_bitslice_value32(cuid^test_nonce, bitsliced_encrypted_nonces[tests], 32);
+ // convert to 32 bit little-endian
+ crypto1_bs_bitslice_value32(rev32( ~(test_parity ^ ~(parity(cuid>>24 & 0xff)<<3 | parity(cuid>>16 & 0xff)<<2 | parity(cuid>>8 & 0xff)<<1 | parity(cuid&0xff)))), bitsliced_encrypted_parity_bits[tests], 4);
}
- total_states_tested = 0;
+ total_states_tested = 0;
- // count number of states to go
- bucket_count = 0;
- for (statelist_t *p = candidates; p != NULL; p = p->next) {
- buckets[bucket_count] = p;
- bucket_count++;
- }
+ // count number of states to go
+ bucket_count = 0;
+ for (statelist_t *p = candidates; p != NULL; p = p->next) {
+ buckets[bucket_count] = p;
+ bucket_count++;
+ }
#ifndef __WIN32
- thread_count = sysconf(_SC_NPROCESSORS_CONF);
+ thread_count = sysconf(_SC_NPROCESSORS_CONF);
if ( thread_count < 1)
thread_count = 1;
#endif /* _WIN32 */
- pthread_t threads[thread_count];
-
- // enumerate states using all hardware threads, each thread handles one bucket
- PrintAndLog("Starting %u cracking threads to search %u buckets containing a total of %"PRIu64" states...", thread_count, bucket_count, maximum_states);
-
- for(size_t i = 0; i < thread_count; i++){
- pthread_create(&threads[i], NULL, crack_states_thread, (void*) i);
- }
- for(size_t i = 0; i < thread_count; i++){
- pthread_join(threads[i], 0);
- }
+ pthread_t threads[thread_count];
- time(&end);
- double elapsed_time = difftime(end, start);
+ // enumerate states using all hardware threads, each thread handles one bucket
+ PrintAndLog("Starting %u cracking threads to search %u buckets containing a total of %"PRIu64" states...", thread_count, bucket_count, maximum_states);
- if(keys_found){
+ for(size_t i = 0; i < thread_count; i++){
+ pthread_create(&threads[i], NULL, crack_states_thread, (void*) i);
+ }
+ for(size_t i = 0; i < thread_count; i++){
+ pthread_join(threads[i], 0);
+ }
+
+ time(&end);
+ double elapsed_time = difftime(end, start);
+
+ if(keys_found){
PrintAndLog("Success! Tested %"PRIu32" states, found %u keys after %.f seconds", total_states_tested, keys_found, elapsed_time);
PrintAndLog("\nFound key: %012"PRIx64"\n", foundkey);
- } else {
+ known_target_key = foundkey;
+
+ ret = TestIfKeyExists(known_target_key);
+
+ PrintAndLog("Check if key is found in the keyspace: %d", ret);
+
+ ret = true;
+ } else {
PrintAndLog("Fail! Tested %"PRIu32" states, in %.f seconds", total_states_tested, elapsed_time);
}
- // reset this counter for the next call
- nonces_to_bruteforce = 0;
+
+ // reset this counter for the next call
+ nonces_to_bruteforce = 0;
}
+
+ return ret;
}
int mfnestedhard(uint8_t blockNo, uint8_t keyType, uint8_t *key, uint8_t trgBlockNo, uint8_t trgKeyType, uint8_t *trgkey, bool nonce_file_read, bool nonce_file_write, bool slow, int tests)
// best_first_bytes[7],
// best_first_bytes[8],
// best_first_bytes[9] );
- PrintAndLog("Number of first bytes with confidence > %2.1f%%: %d", CONFIDENCE_THRESHOLD*100.0, num_good_first_bytes);
- clock_t time1 = clock();
- generate_candidates(first_byte_Sum, nonces[best_first_bytes[0]].Sum8_guess);
- time1 = clock() - time1;
- if ( time1 > 0 )
- PrintAndLog("Time for generating key candidates list: %1.0f seconds", ((float)time1)/CLOCKS_PER_SEC);
-
- brute_force();
-
+ //PrintAndLog("Number of first bytes with confidence > %2.1f%%: %d", CONFIDENCE_THRESHOLD*100.0, num_good_first_bytes);
+
+ //clock_t time1 = clock();
+ //generate_candidates(first_byte_Sum, nonces[best_first_bytes[0]].Sum8_guess);
+ //time1 = clock() - time1;
+ //if ( time1 > 0 )
+ //PrintAndLog("Time for generating key candidates list: %1.0f seconds", ((float)time1)/CLOCKS_PER_SEC);
+
+ //brute_force();
+
free_nonces_memory();
free_statelist_cache();
free_candidates_memory(candidates);
candidates = NULL;
- }
+ }
return 0;
}
projects / proxmark3-svn / commitdiff