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Merge pull request #116 from merlokk/madfix

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Madfix
This commit is contained in:
Oleg Moiseenko 2019-03-06 00:50:36 +02:00 committed by GitHub
commit be08c79bbf
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 14 additions and 19 deletions
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33
client/mifare/mad.c
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@ -111,15 +111,13 @@ int madCRCCheck(uint8_t *sector, bool verbose, int MADver) {
if (MADver == 1) {
uint8_t crc = CRC8Mad(&sector[16 + 1], 15 + 16);
if (crc != sector[16]) {
if (verbose)
PrintAndLogEx(WARNING, "Wrong MAD%d CRC. Calculated: 0x%02x, from card: 0x%02x", MADver, crc, sector[16]);
PrintAndLogEx(WARNING, "Wrong MAD%d CRC. Calculated: 0x%02x, from card: 0x%02x", MADver, crc, sector[16]);
return 3;
};
} else {
uint8_t crc = CRC8Mad(&sector[1], 15 + 16 + 16);
if (crc != sector[0]) {
if (verbose)
PrintAndLogEx(WARNING, "Wrong MAD%d CRC. Calculated: 0x%02x, from card: 0x%02x", MADver, crc, sector[16]);
PrintAndLogEx(WARNING, "Wrong MAD%d CRC. Calculated: 0x%02x, from card: 0x%02x", MADver, crc, sector[16]);
return 3;
};
}
@ -135,6 +133,8 @@ uint16_t madGetAID(uint8_t *sector, int MADver, int sectorNo) {
}
int MADCheck(uint8_t *sector0, uint8_t *sector10, bool verbose, bool *haveMAD2) {
int res = 0;
if (!sector0)
return 1;
@ -169,23 +169,21 @@ int MADCheck(uint8_t *sector0, uint8_t *sector10, bool verbose, bool *haveMAD2)
if (haveMAD2)
*haveMAD2 = (MADVer == 2);
int res = madCRCCheck(sector0, true, 1);
if (res)
return res;
res = madCRCCheck(sector0, true, 1);
if (verbose)
if (verbose && !res)
PrintAndLogEx(NORMAL, "CRC8-MAD1 OK.");
if (MADVer == 2 && sector10) {
int res = madCRCCheck(sector10, true, 2);
if (res)
return res;
int res2 = madCRCCheck(sector10, true, 2);
if (!res)
res = res2;
if (verbose)
if (verbose & !res2)
PrintAndLogEx(NORMAL, "CRC8-MAD2 OK.");
}
return 0;
return res;
}
int MADDecode(uint8_t *sector0, uint8_t *sector10, uint16_t *mad, size_t *madlen) {
@ -216,11 +214,8 @@ int MADDecode(uint8_t *sector0, uint8_t *sector10, uint16_t *mad, size_t *madlen
int MAD1DecodeAndPrint(uint8_t *sector, bool verbose, bool *haveMAD2) {
// check MAD1 only
int res = MADCheck(sector, NULL, verbose, haveMAD2);
if (verbose && !res)
PrintAndLogEx(NORMAL, "CRC8-MAD OK.");
MADCheck(sector, NULL, verbose, haveMAD2);
// info byte
uint8_t InfoByte = sector[16 + 1] & 0x3f;
if (InfoByte) {
@ -247,7 +242,7 @@ int MAD2DecodeAndPrint(uint8_t *sector, bool verbose) {
int res = madCRCCheck(sector, true, 2);
if (verbose && !res)
PrintAndLogEx(NORMAL, "CRC8-MAD OK.");
PrintAndLogEx(NORMAL, "CRC8-MAD2 OK.");
uint8_t InfoByte = sector[1] & 0x3f;
PrintAndLogEx(NORMAL, "MAD2 Card publisher sector: 0x%02x", InfoByte);