+ // select card
+ if (len == 9 &&
+ (receivedCmd[0] == 0x93 && receivedCmd[1] == 0x70 && memcmp(&receivedCmd[2], rUIDBCC1, 4) == 0)) {
+ if (!_7BUID)
+ EmSendCmd(rSAK, sizeof(rSAK));
+ else
+ EmSendCmd(rSAK1, sizeof(rSAK1));
+
+ cuid = bytes_to_num(rUIDBCC1, 4);
+ if (!_7BUID) {
+ cardSTATE = MFEMUL_WORK;
+ LED_B_ON();
+ if (MF_DBGLEVEL >= 4) Dbprintf("--> WORK. anticol1 time: %d", GetTickCount() - selTimer);
+ break;
+ } else {
+ cardSTATE = MFEMUL_SELECT2;
+ break;
+ }
+ }
+
+ break;
+ }
+ case MFEMUL_SELECT2:{
+ if (!len) break;
+
+ if (len == 2 && (receivedCmd[0] == 0x95 && receivedCmd[1] == 0x20)) {
+ EmSendCmd(rUIDBCC2, sizeof(rUIDBCC2));
+ break;
+ }
+
+ // select 2 card
+ if (len == 9 &&
+ (receivedCmd[0] == 0x95 && receivedCmd[1] == 0x70 && memcmp(&receivedCmd[2], rUIDBCC2, 4) == 0)) {
+ EmSendCmd(rSAK, sizeof(rSAK));
+
+ cuid = bytes_to_num(rUIDBCC2, 4);
+ cardSTATE = MFEMUL_WORK;
+ LED_B_ON();
+ if (MF_DBGLEVEL >= 4) Dbprintf("--> WORK. anticol2 time: %d", GetTickCount() - selTimer);
+ break;
+ }
+
+ // i guess there is a command). go into the work state.
+ if (len != 4) break;
+ cardSTATE = MFEMUL_WORK;
+ goto lbWORK;
+ }
+ case MFEMUL_AUTH1:{
+ if (len == 8) {
+ // --- crypto
+ //rn_enc = bytes_to_num(receivedCmd, 4);
+ //cardRn = rn_enc ^ crypto1_word(pcs, rn_enc , 1);
+ cardRr = bytes_to_num(&receivedCmd[4], 4) ^ crypto1_word(pcs, 0, 0);
+ // test if auth OK
+ if (cardRr != prng_successor(nonce, 64)){
+ if (MF_DBGLEVEL >= 4) Dbprintf("AUTH FAILED. cardRr=%08x, succ=%08x", cardRr, prng_successor(nonce, 64));
+ cardSTATE_TO_IDLE();
+ break;
+ }
+ ans = prng_successor(nonce, 96) ^ crypto1_word(pcs, 0, 0);
+ num_to_bytes(ans, 4, rAUTH_AT);
+ // --- crypto
+ EmSendCmd(rAUTH_AT, sizeof(rAUTH_AT));
+ cardSTATE = MFEMUL_AUTH2;
+ } else {
+ cardSTATE_TO_IDLE();
+ }
+ if (cardSTATE != MFEMUL_AUTH2) break;
+ }
+ case MFEMUL_AUTH2:{
+ LED_C_ON();
+ cardSTATE = MFEMUL_WORK;
+ if (MF_DBGLEVEL >= 4) Dbprintf("AUTH COMPLETED. sec=%d, key=%d time=%d", cardAUTHSC, cardAUTHKEY, GetTickCount() - authTimer);
+ break;
+ }
+ case MFEMUL_WORK:{
+lbWORK: if (len == 0) break;
+
+ if (cardAUTHKEY == 0xff) {
+ // first authentication
+ if (len == 4 && (receivedCmd[0] == 0x60 || receivedCmd[0] == 0x61)) {
+ authTimer = GetTickCount();
+
+ cardAUTHSC = receivedCmd[1] / 4; // received block num
+ cardAUTHKEY = receivedCmd[0] - 0x60;
+
+ // --- crypto
+ crypto1_create(pcs, emlGetKey(cardAUTHSC, cardAUTHKEY));
+ ans = nonce ^ crypto1_word(pcs, cuid ^ nonce, 0);
+ num_to_bytes(nonce, 4, rAUTH_AT);
+ EmSendCmd(rAUTH_AT, sizeof(rAUTH_AT));
+ // --- crypto
+
+// last working revision
+// EmSendCmd14443aRaw(resp1, resp1Len, 0);
+// LogTrace(NULL, 0, GetDeltaCountUS(), 0, true);
+
+ cardSTATE = MFEMUL_AUTH1;
+ //nextCycleTimeout = 10;
+ break;
+ }
+ } else {
+ // decrypt seqence
+ mf_crypto1_decrypt(pcs, receivedCmd, len);
+
+ // nested authentication
+ if (len == 4 && (receivedCmd[0] == 0x60 || receivedCmd[0] == 0x61)) {
+ authTimer = GetTickCount();
+
+ cardAUTHSC = receivedCmd[1] / 4; // received block num
+ cardAUTHKEY = receivedCmd[0] - 0x60;
+
+ // --- crypto
+ crypto1_create(pcs, emlGetKey(cardAUTHSC, cardAUTHKEY));
+ ans = nonce ^ crypto1_word(pcs, cuid ^ nonce, 0);
+ num_to_bytes(ans, 4, rAUTH_AT);
+ EmSendCmd(rAUTH_AT, sizeof(rAUTH_AT));
+ // --- crypto
+
+ cardSTATE = MFEMUL_AUTH1;
+ //nextCycleTimeout = 10;
+ break;
+ }
+ }
+
+ // rule 13 of 7.5.3. in ISO 14443-4. chaining shall be continued
+ // BUT... ACK --> NACK
+ if (len == 1 && receivedCmd[0] == CARD_ACK) {
+ EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA));
+ break;
+ }
+
+ // rule 12 of 7.5.3. in ISO 14443-4. R(NAK) --> R(ACK)
+ if (len == 1 && receivedCmd[0] == CARD_NACK_NA) {
+ EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_ACK));
+ break;
+ }
+
+ // read block
+ if (len == 4 && receivedCmd[0] == 0x30) {
+ if (receivedCmd[1] >= 16 * 4 || receivedCmd[1] / 4 != cardAUTHSC) {
+ EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA));
+ break;
+ }
+ emlGetMem(response, receivedCmd[1], 1);
+ AppendCrc14443a(response, 16);
+ mf_crypto1_encrypt(pcs, response, 18, &par);
+ EmSendCmdPar(response, 18, par);
+ break;
+ }
+
+ // write block
+ if (len == 4 && receivedCmd[0] == 0xA0) {
+ if (receivedCmd[1] >= 16 * 4 || receivedCmd[1] / 4 != cardAUTHSC) {
+ EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA));
+ break;
+ }
+ EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_ACK));
+ //nextCycleTimeout = 50;
+ cardSTATE = MFEMUL_WRITEBL2;
+ cardWRBL = receivedCmd[1];
+ break;
+ }
+
+ // works with cardINTREG
+
+ // increment, decrement, restore
+ if (len == 4 && (receivedCmd[0] == 0xC0 || receivedCmd[0] == 0xC1 || receivedCmd[0] == 0xC2)) {
+ if (receivedCmd[1] >= 16 * 4 ||
+ receivedCmd[1] / 4 != cardAUTHSC ||
+ emlCheckValBl(receivedCmd[1])) {
+ EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA));
+ break;
+ }
+ EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_ACK));
+ if (receivedCmd[0] == 0xC1)
+ cardSTATE = MFEMUL_INTREG_INC;
+ if (receivedCmd[0] == 0xC0)
+ cardSTATE = MFEMUL_INTREG_DEC;
+ if (receivedCmd[0] == 0xC2)
+ cardSTATE = MFEMUL_INTREG_REST;
+ cardWRBL = receivedCmd[1];
+
+ break;
+ }
+
+
+ // transfer
+ if (len == 4 && receivedCmd[0] == 0xB0) {
+ if (receivedCmd[1] >= 16 * 4 || receivedCmd[1] / 4 != cardAUTHSC) {
+ EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA));
+ break;
+ }
+
+ if (emlSetValBl(cardINTREG, cardINTBLOCK, receivedCmd[1]))
+ EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA));
+ else
+ EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_ACK));
+
+ break;
+ }
projects / proxmark3-svn / blobdiff