X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/f66021cf4875fed1ae5b6767f61197d3896e224e..417f4ae12711f28d8b27dcd29786a1cc9300aaad:/client/nonce2key/nonce2key.c

diff --git a/client/nonce2key/nonce2key.c b/client/nonce2key/nonce2key.c
index 47206380..81f5ae1c 100644
--- a/client/nonce2key/nonce2key.c
+++ b/client/nonce2key/nonce2key.c
@@ -29,50 +29,51 @@ int compar_state(const void * a, const void * b) {
 }
 
 int nonce2key(uint32_t uid, uint32_t nt, uint32_t nr, uint64_t par_info, uint64_t ks_info, uint64_t * key) {
-  struct Crypto1State *state;
-  uint32_t i, pos, rr, nr_diff, key_count;//, ks1, ks2;
-  byte_t bt, ks3x[8], par[8][8];
-  uint64_t key_recovered;
-  int64_t *state_s;
-  static uint32_t last_uid;
-  static int64_t *last_keylist;
-  rr = 0;
-  
-  if (last_uid != uid)
-  {
-	free(last_keylist);
-	last_keylist = NULL;
-  }
-  last_uid = uid;
 
-  // Reset the last three significant bits of the reader nonce
-  nr &= 0xffffff1f;
+	struct Crypto1State *state;
+	uint32_t i, pos, rr = 0, nr_diff, key_count;//, ks1, ks2;
+	byte_t bt, ks3x[8], par[8][8];
+	uint64_t key_recovered;
+	int64_t *state_s;
+
+	static uint32_t last_uid;
+	static int64_t *last_keylist;
   
-  PrintAndLog("\nuid(%08x) nt(%08x) par(%016"llx") ks(%016"llx")\n\n",uid,nt,par_info,ks_info);
-
-  for (pos=0; pos<8; pos++)
-  {
-    ks3x[7-pos] = (ks_info >> (pos*8)) & 0x0f;
-    bt = (par_info >> (pos*8)) & 0xff;
-    for (i=0; i<8; i++)
-    {
-      par[7-pos][i] = (bt >> i) & 0x01;
-    }
-  }
-
-  printf("|diff|{nr}    |ks3|ks3^5|parity         |\n");
-  printf("+----+--------+---+-----+---------------+\n");
-  for (i=0; i<8; i++)
-  {
-    nr_diff = nr | i << 5;
-    printf("| %02x |%08x|",i << 5, nr_diff);
-    printf(" %01x |  %01x  |",ks3x[i], ks3x[i]^5);
-    for (pos=0; pos<7; pos++) printf("%01x,", par[i][pos]);
-    printf("%01x|\n", par[i][7]);
-  }
+	if (last_uid != uid && last_keylist != NULL) {
+		free(last_keylist);
+		last_keylist = NULL;
+	}
+	last_uid = uid;
+
+	// Reset the last three significant bits of the reader nonce
+	nr &= 0xffffff1f;
   
-	if (par_info==0)
-		PrintAndLog("parity is all zero,try special attack!just wait for few more seconds...");
+	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++ ) {
+		ks3x[7-pos] = (ks_info >> (pos*8)) & 0x0f;
+		bt = (par_info >> (pos*8)) & 0xff;
+
+		for ( i = 0; i < 8; i++) {
+			par[7-pos][i] = (bt >> i) & 0x01;
+		}
+	}
+
+	printf("|diff|{nr}    |ks3|ks3^5|parity         |\n");
+	printf("+----+--------+---+-----+---------------+\n");
+
+	for ( i = 0; i < 8; i++) {
+		nr_diff = nr | i << 5;
+		printf("| %02x |%08x|", i << 5, nr_diff);
+		printf(" %01x |  %01x  |", ks3x[i], ks3x[i]^5);
+		for (pos = 0; pos < 7; pos++) 
+			printf("%01x,", par[i][pos]);
+		printf("%01x|\n", par[i][7]);
+	}
+	printf("+----+--------+---+-----+---------------+\n");
+
+	if ( par_info == 0 )
+		PrintAndLog("Parity is all zero, try special attack! Wait for few more seconds...");
   
 	state = lfsr_common_prefix(nr, rr, ks3x, par, par_info==0);
 	state_s = (int64_t*)state;
@@ -93,59 +94,207 @@ int nonce2key(uint32_t uid, uint32_t nt, uint32_t nr, uint64_t par_info, uint64_
 	if(!state)
 		return 1;
 	
+	// quicksort statelist
 	qsort(state_s, i, sizeof(*state_s), compar_state);
+
+	// set last element marker 
 	*(state_s + i) = -1;
 	
 	//Create the intersection:
-	if (par_info == 0 )
-		if ( last_keylist != NULL)
-		{
+	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:%ld p2:%ld p3:%ld key:%012"llx"\n",p1-last_keylist, p2-state_s, p3-last_keylist,*p1);
+					printf("p1:%"llx" p2:%"llx" p3:%"llx" key:%012"llx"\n",
+						(uint64_t)(p1-last_keylist),
+						(uint64_t)(p2-state_s),
+						(uint64_t)(p3-last_keylist),
+						*p1);
 					*p3++ = *p1++;
 					p2++;
-				}
-				else {
+				} else {
 					while (compar_state(p1, p2) == -1) ++p1;
 					while (compar_state(p1, p2) == 1) ++p2;
 				}
 			}
-			key_count = p3 - last_keylist;;
-		}
-		else
+			key_count = p3 - last_keylist;
+		} else {
 			key_count = 0;
-	else
-	{
+		}
+	} else {
 		last_keylist = state_s;
 		key_count = i;
 	}
 	
-	printf("key_count:%d\n", key_count);
-	
+	printf("key candidates count: %d\n", key_count);
+
 	// The list may still contain several key candidates. Test each of them with mfCheckKeys
+	int res;
+	uint8_t keyBlock[6];
+	uint64_t key64;
 	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, 1, keyBlock, &key64)) {
+		// Call tag to verify if key is correct
+		res = mfCheckKeys(0, 0, false, 1, keyBlock, &key64);
+		if (!res) {
 			*key = key64;
 			free(last_keylist);
 			last_keylist = NULL;
-			if (par_info ==0)
+			if (par_info == 0)
 				free(state);
 			return 0;
 		}
 	}	
-
 	
 	free(last_keylist);
 	last_keylist = state_s;
-	
 	return 1;
 }
+
+// *outputkey is not used...
+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;
+		}
+	}
+	crypto1_destroy(t);
+	crypto1_destroy(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;
+		}
+	}
+	crypto1_destroy(t);
+	crypto1_destroy(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);
+	return 0;
+}
\ No newline at end of file