+ //Create the intersection:
+ if (par_info == 0 )
+ if ( last_keylist != NULL)
+ {
+ int64_t *p1, *p2, *p3;
+ p1 = p3 = last_keylist;
+ p2 = state_s;
+ while ( *p1 != -1 && *p2 != -1 ) {
+ if (compar_state(p1, p2) == 0) {
+ printf("p1:%" PRIx64" p2:%" PRIx64 " p3:%" PRIx64" key:%012" PRIx64 "\n",(uint64_t)(p1-last_keylist),(uint64_t)(p2-state_s),(uint64_t)(p3-last_keylist),*p1);
+ *p3++ = *p1++;
+ p2++;
+ }
+ else {
+ while (compar_state(p1, p2) == -1) ++p1;
+ while (compar_state(p1, p2) == 1) ++p2;
+ }
+ }
+ key_count = p3 - last_keylist;;
+ }
+ else
+ key_count = 0;
+ else
+ {
+ last_keylist = state_s;
+ key_count = i;
+ }
+
+ printf("key_count:%d\n", key_count);
+
+ // The list may still contain several key candidates. Test each of them with mfCheckKeys
+ for (i = 0; i < key_count; i++) {
+ uint8_t keyBlock[6];
+ uint64_t key64;
+ key64 = *(last_keylist + i);
+ num_to_bytes(key64, 6, keyBlock);
+ key64 = 0;
+ if (!mfCheckKeys(0, 0, false, 1, keyBlock, &key64)) {
+ *key = key64;
+ free(last_keylist);
+ last_keylist = NULL;
+ if (par_info ==0)
+ free(state);
+ return 0;
+ }
+ }
+
+
+ free(last_keylist);
+ last_keylist = state_s;
+
+ return 1;
+}
+
+// 32 bit recover key from 2 nonces
+bool mfkey32(nonces_t data, uint64_t *outputkey) {
+ struct Crypto1State *s,*t;
+ uint64_t outkey = 0;
+ uint64_t key=0; // recovered key
+ uint32_t uid = data.cuid;
+ uint32_t nt = data.nonce; // first tag challenge (nonce)
+ uint32_t nr0_enc = data.nr; // first encrypted reader challenge
+ uint32_t ar0_enc = data.ar; // first encrypted reader response
+ uint32_t nr1_enc = data.nr2; // second encrypted reader challenge
+ uint32_t ar1_enc = data.ar2; // second encrypted reader response
+ clock_t t1 = clock();
+ bool isSuccess = false;
+ uint8_t counter=0;
+
+ s = lfsr_recovery32(ar0_enc ^ prng_successor(nt, 64), 0);
+
+ for(t = s; t->odd | t->even; ++t) {
+ lfsr_rollback_word(t, 0, 0);
+ lfsr_rollback_word(t, nr0_enc, 1);
+ lfsr_rollback_word(t, uid ^ nt, 0);
+ crypto1_get_lfsr(t, &key);
+ crypto1_word(t, uid ^ nt, 0);
+ crypto1_word(t, nr1_enc, 1);
+ if (ar1_enc == (crypto1_word(t, 0, 0) ^ prng_successor(nt, 64))) {
+ //PrintAndLog("Found Key: [%012" PRIx64 "]",key);
+ outkey = key;
+ counter++;
+ if (counter==20) break;
+ }
+ }
+ isSuccess = (counter == 1);
+ t1 = clock() - t1;
+ //if ( t1 > 0 ) PrintAndLog("Time in mfkey32: %.0f ticks \nFound %d possible keys", (float)t1, counter);
+ *outputkey = ( isSuccess ) ? outkey : 0;
+ crypto1_destroy(s);
+ /* //un-comment to save all keys to a stats.txt file
+ FILE *fout;
+ if ((fout = fopen("stats.txt","ab")) == NULL) {
+ PrintAndLog("Could not create file name stats.txt");
+ return 1;
+ }
+ fprintf(fout, "mfkey32,%d,%08x,%d,%s,%04x%08x,%.0Lf\r\n", counter, data.cuid, data.sector, (data.keytype) ? "B" : "A", (uint32_t)(outkey>>32) & 0xFFFF,(uint32_t)(outkey&0xFFFFFFFF),(long double)t1);
+ fclose(fout);
+ */
+ return isSuccess;
+}
+
+bool tryMfk32_moebius(nonces_t data, uint64_t *outputkey) {
+ struct Crypto1State *s, *t;
+ uint64_t outkey = 0;
+ uint64_t key = 0; // recovered key
+ uint32_t uid = data.cuid;
+ uint32_t nt0 = data.nonce; // first tag challenge (nonce)
+ uint32_t nr0_enc = data.nr; // first encrypted reader challenge
+ uint32_t ar0_enc = data.ar; // first encrypted reader response
+ uint32_t nt1 = data.nonce2; // second tag challenge (nonce)
+ uint32_t nr1_enc = data.nr2; // second encrypted reader challenge
+ uint32_t ar1_enc = data.ar2; // second encrypted reader response
+ bool isSuccess = false;
+ int counter = 0;
+
+ //PrintAndLog("Enter mfkey32_moebius");
+ clock_t t1 = clock();
+
+ s = lfsr_recovery32(ar0_enc ^ prng_successor(nt0, 64), 0);
projects / proxmark3-svn / blobdiff