static int64_t *last_keylist;
rr = 0;
- if (last_uid != uid)
+ if (last_uid != uid && last_keylist != NULL)
{
free(last_keylist);
last_keylist = NULL;
// Reset the last three significant bits of the reader nonce
nr &= 0xffffff1f;
- PrintAndLog("\nuid(%08x) nt(%08x) par(%016"llx") ks(%016"llx")\n\n",uid,nt,par_info,ks_info);
+ PrintAndLog("\nuid(%08x) nt(%08x) par(%016"llx") ks(%016"llx") nr(%08"llx")\n\n",uid,nt,par_info,ks_info,nr);
for (pos=0; pos<8; pos++)
{
}
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];
key64 = *(last_keylist + i);
num_to_bytes(key64, 6, keyBlock);
key64 = 0;
- if (!mfCheckKeys(0, 0, 1, keyBlock, &key64)) {
+ if (!mfCheckKeys(0, 0, false, 1, keyBlock, &key64)) {
*key = key64;
free(last_keylist);
last_keylist = NULL;
return 1;
}
+
+int tryMfk32(uint64_t myuid, uint8_t *data, uint8_t *outputkey ){
+
+ struct Crypto1State *s,*t;
+ uint64_t key; // recovered key
+ uint32_t uid; // serial number
+ uint32_t nt; // tag challenge
+ uint32_t nr0_enc; // first encrypted reader challenge
+ uint32_t ar0_enc; // first encrypted reader response
+ uint32_t nr1_enc; // second encrypted reader challenge
+ uint32_t ar1_enc; // second encrypted reader response
+ bool isSuccess = FALSE;
+ int counter = 0;
+
+ uid = myuid;//(uint32_t)bytes_to_num(data + 0, 4);
+ nt = *(uint32_t*)(data+8);
+ nr0_enc = *(uint32_t*)(data+12);
+ ar0_enc = *(uint32_t*)(data+16);
+ nr1_enc = *(uint32_t*)(data+32);
+ ar1_enc = *(uint32_t*)(data+36);
+
+ // PrintAndLog("recovering key for:");
+ // PrintAndLog(" uid: %08x %08x",uid, myuid);
+ // PrintAndLog(" nt: %08x",nt);
+ // PrintAndLog(" {nr_0}: %08x",nr0_enc);
+ // PrintAndLog(" {ar_0}: %08x",ar0_enc);
+ // PrintAndLog(" {nr_1}: %08x",nr1_enc);
+ // PrintAndLog(" {ar_1}: %08x",ar1_enc);
+
+ 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"llx"]",key);
+ isSuccess = TRUE;
+ ++counter;
+ if (counter==20)
+ break;
+ }
+ }
+ free(s);
+ return isSuccess;
+}
+
+int tryMfk32_moebius(uint64_t myuid, uint8_t *data, uint8_t *outputkey ){
+
+ struct Crypto1State *s,*t;
+ uint64_t key; // recovered key
+ uint32_t uid; // serial number
+ uint32_t nt0; // tag challenge first
+ uint32_t nt1; // tag challenge second
+ uint32_t nr0_enc; // first encrypted reader challenge
+ uint32_t ar0_enc; // first encrypted reader response
+ uint32_t nr1_enc; // second encrypted reader challenge
+ uint32_t ar1_enc; // second encrypted reader response
+ bool isSuccess = FALSE;
+ int counter = 0;
+
+ uid = myuid;//(uint32_t)bytes_to_num(data + 0, 4);
+ nt0 = *(uint32_t*)(data+8);
+ nr0_enc = *(uint32_t*)(data+12);
+ ar0_enc = *(uint32_t*)(data+16);
+ nt1 = *(uint32_t*)(data+8);
+ nr1_enc = *(uint32_t*)(data+32);
+ ar1_enc = *(uint32_t*)(data+36);
+
+ s = lfsr_recovery32(ar0_enc ^ prng_successor(nt0, 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 ^ nt0, 0);
+ crypto1_get_lfsr(t, &key);
+
+ crypto1_word(t, uid ^ nt1, 0);
+ crypto1_word(t, nr1_enc, 1);
+ if (ar1_enc == (crypto1_word(t, 0, 0) ^ prng_successor(nt1, 64))) {
+ PrintAndLog("Found Key: [%012"llx"]",key);
+ isSuccess = TRUE;
+ ++counter;
+ if (counter==20)
+ break;
+ }
+ }
+ free(s);
+ return isSuccess;
+}
+
+
+int tryMfk64(uint64_t myuid, uint8_t *data, uint8_t *outputkey ){
+
+ struct Crypto1State *revstate;
+ uint64_t key; // recovered key
+ uint32_t uid; // serial number
+ uint32_t nt; // tag challenge
+ uint32_t nr_enc; // encrypted reader challenge
+ uint32_t ar_enc; // encrypted reader response
+ uint32_t at_enc; // encrypted tag response
+ uint32_t ks2; // keystream used to encrypt reader response
+ uint32_t ks3; // keystream used to encrypt tag response
+
+ struct Crypto1State mpcs = {0, 0};
+ struct Crypto1State *pcs;
+ pcs = &mpcs;
+
+ uid = myuid;//(uint32_t)bytes_to_num(data + 0, 4);
+ nt = *(uint32_t*)(data+8);
+ nr_enc = *(uint32_t*)(data+12);
+ ar_enc = *(uint32_t*)(data+16);
+
+ crypto1_word(pcs, nr_enc , 1);
+ at_enc = prng_successor(nt, 96) ^ crypto1_word(pcs, 0, 0);
+
+ // printf("Recovering key for:\n");
+ // printf(" uid: %08x\n",uid);
+ // printf(" nt: %08x\n",nt);
+ // printf(" {nr}: %08x\n",nr_enc);
+ // printf(" {ar}: %08x\n",ar_enc);
+ // printf(" {at}: %08x\n",at_enc);
+
+ // Extract the keystream from the messages
+ ks2 = ar_enc ^ prng_successor(nt, 64);
+ ks3 = at_enc ^ prng_successor(nt, 96);
+
+ revstate = lfsr_recovery64(ks2, ks3);
+ lfsr_rollback_word(revstate, 0, 0);
+ lfsr_rollback_word(revstate, 0, 0);
+ lfsr_rollback_word(revstate, nr_enc, 1);
+ lfsr_rollback_word(revstate, uid ^ nt, 0);
+ crypto1_get_lfsr(revstate, &key);
+ PrintAndLog("Found Key: [%012"llx"]",key);
+ crypto1_destroy(revstate);
+ crypto1_destroy(pcs);
+ return 0;
+}
projects / proxmark3-svn / blobdiff