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Error handling

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This commit is contained in:
Aram
2016-04-30 22:31:47 +02:00
parent 131c4d1998
commit 09614d318f
1 changed files with 6 additions and 5 deletions
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11
libnfc_crypto1_crack.c
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@ -473,7 +473,7 @@ void nested_auth(uint32_t uid, uint64_t known_key, uint8_t ab_key, uint8_t for_b
// Transmit reader-answer
int res;
if (((res = nfc_initiator_transceive_bits(pnd, ArEnc, 64, ArEncPar, Rx, sizeof(Rx), RxPar)) < 0) || (res != 32)) {
printf("Reader-answer transfer error, exiting..");
fprintf(stderr, "Reader-answer transfer error, exiting..");
return;
}
@ -481,7 +481,7 @@ void nested_auth(uint32_t uid, uint64_t known_key, uint8_t ab_key, uint8_t for_b
Nt = prng_successor(Nt, 32);
if (!((crypto1_word(pcs, 0x00, 0) ^ bytes_to_num(Rx, 4)) == (Nt & 0xFFFFFFFF))) {
printf("[At] is not Suc3(Nt), something is wrong, exiting..");
fprintf(stderr, "[At] is not Suc3(Nt), something is wrong, exiting..");
return;
}
@ -494,7 +494,7 @@ void nested_auth(uint32_t uid, uint64_t known_key, uint8_t ab_key, uint8_t for_b
ArEncPar[i] = filter(*pcs) ^ oddparity(Cmd[i]);
}
if (((res = nfc_initiator_transceive_bits(pnd, ArEnc, 32, ArEncPar, Rx, sizeof(Rx), RxPar)) < 0) || (res != 32)) {
printf("Reader-answer transfer error, exiting..");
fprintf(stderr, "Reader-answer transfer error, exiting..");
return;
}
@ -608,7 +608,7 @@ int main (int argc, const char * argv[]) {
pnd = nfc_open(context, NULL);
if (pnd == NULL) {
printf("No NFC device connection\n");
fprintf(stderr, "No NFC device connection\n");
return 1;
}
@ -674,7 +674,8 @@ int main (int argc, const char * argv[]) {
space = craptev1_get_space(nonces, 95, uid);
total_states = craptev1_sizeof_space(space);
if(!space){
if(!space || !total_states_tested){
fprintf(stderr, "No solution found!\n");
return 1;
}