github/RRG-Proxmark3
1
0
Fork 0
mirror of https://github.com/RfidResearchGroup/proxmark3.git synced 2025-08-20 21:33:47 -07:00
Code Issues Projects Releases Packages Wiki Activity Actions 4

add cardx crc skeleton, will need to adapt

Browse source
This commit is contained in:
iceman1001 2019-12-16 13:26:13 +01:00
commit 50d1dfea77
2 changed files with 10 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

8
common/crc.c
View file

@ -126,3 +126,11 @@ uint32_t CRC8Legic(uint8_t *buff, size_t size) {
crc_update2(&crc, buff[i], 8); crc_update2(&crc, buff[i], 8);
return reflect8(crc_finish(&crc)); return reflect8(crc_finish(&crc));
} }
// width=8 poly=0x107, init=0x2C refin=true refout=true xorout=0x0000 check=0 name="CRC-8/CARDX"
uint32_t CRC8Cardx(uint8_t *buff, size_t size) {
crc_t crc;
crc_init_ref(&crc, 8, 0x107, 0x2C, 0, true, true);
for (size_t i = 0; i < size; ++i)
crc_update2(&crc, buff[i], 8);
return crc_finish(&crc);
}

2
common/crc.h
View file

@ -73,4 +73,6 @@ uint32_t CRC4Legic(uint8_t *buff, size_t size);
// Calculate CRC-8/Legic checksum // Calculate CRC-8/Legic checksum
uint32_t CRC8Legic(uint8_t *buff, size_t size); uint32_t CRC8Legic(uint8_t *buff, size_t size);
// Calculate CRC-8/Cardx checksum
uint32_t CRC8Cardx(uint8_t *buff, size_t size);
#endif /* __CRC_H */ #endif /* __CRC_H */