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hf mf sim: add option to allow key b to be used even if readable

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This commit is contained in:
Philippe Teuwen 2024-10-19 20:16:02 +02:00
commit 41a43bc85c
3 changed files with 20 additions and 11 deletions
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16
armsrc/mifaresim.c
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@ -900,14 +900,16 @@ void Mifare1ksim(uint16_t flags, uint8_t exitAfterNReads, uint8_t *uid, uint16_t
// Compliance of MIFARE Classic EV1 1K Datasheet footnote of Table 8
// If access bits show that key B is Readable, any subsequent memory access will be refused.
// Some cards don't respect it so we can also skip it with FLAG_MF_USE_READ_KEYB
if ((flags & FLAG_MF_USE_READ_KEYB) != FLAG_MF_USE_READ_KEYB) {
if (cardAUTHKEY == AUTHKEYB && IsKeyBReadable(blockNo)) {
EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA));
FpgaDisableTracing();
if (cardAUTHKEY == AUTHKEYB && IsKeyBReadable(blockNo)) {
EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA));
FpgaDisableTracing();
if (g_dbglevel >= DBG_ERROR)
Dbprintf("[MFEMUL_WORK] Access denied: Reader tried to access memory on authentication with key B while key B is readable in sector (0x%02x)", cardAUTHSC);
break;
if (g_dbglevel >= DBG_ERROR)
Dbprintf("[MFEMUL_WORK] Access denied: Reader tried to access memory on authentication with key B while key B is readable in sector (0x%02x)", cardAUTHSC);
break;
}
}
}