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support of a new ATS for DESFire EV1 on JCOP3

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Adding support of a new ATS sent by a DESFire EV1 applet found on a JCOP3 P60 chip.
I've split the check of the ATS length into two checks.
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Alexandre Fenyo 2021-05-19 20:08:37 +02:00 committed by GitHub
parent e95406c0d1
commit 24dc2eff40
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 8 additions and 6 deletions
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12
libfreefare/mifare_desfire.c
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@ -271,19 +271,21 @@ le24toh(uint8_t data[3])
bool
mifare_desfire_taste(nfc_device *device, nfc_target target)
{
// We have two different ATS prefixes to
// check for, standalone and JCOP.
// We have three different ATS prefixes to
// check for, standalone, JCOP and JCOP3.
static const char STANDALONE_DESFIRE[] = { 0x75, 0x77, 0x81, 0x02 };
static const char JCOP_DESFIRE[] = { 0x75, 0xf7, 0xb1, 0x02 };
static const char JCOP3_DESFIRE[] = { 0x78, 0x77, 0x71, 0x02 };
(void) device;
return target.nm.nmt == NMT_ISO14443A &&
target.nti.nai.btSak == 0x20 &&
target.nti.nai.btSak == 0x20 && ((
target.nti.nai.szAtsLen >= 5 && (
memcmp(target.nti.nai.abtAts, STANDALONE_DESFIRE, sizeof(STANDALONE_DESFIRE)) == 0 ||
memcmp(target.nti.nai.abtAts, JCOP_DESFIRE, sizeof(JCOP_DESFIRE)) == 0
);
memcmp(target.nti.nai.abtAts, JCOP_DESFIRE, sizeof(JCOP_DESFIRE)) == 0))
|| (target.nti.nai.szAtsLen == 4 &&
memcmp(target.nti.nai.abtAts, JCOP3_DESFIRE, sizeof(JCOP3_DESFIRE)) == 0));
}
/*