X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/514ddaa2ff936ded76554a2ad97f6fe978c6f86e..a1ab594e244c1554b2e997efa8813e8ec3b80017:/common/crc.c diff --git a/common/crc.c b/common/crc.c index 0425a4fd..72e6f024 100644 --- a/common/crc.c +++ b/common/crc.c @@ -82,7 +82,6 @@ uint32_t CRC8Maxim(uint8_t *buff, size_t size) { return crc_finish(&crc); } - // width=4 poly=0xC, reversed poly=0x7 init=0x5 refin=true refout=true xorout=0x0000 check= name="CRC-4/LEGIC" // width=8 poly=0x63, reversed poly=0x8D init=0x55 refin=true refout=true xorout=0x0000 check=0xC6 name="CRC-8/LEGIC" // the CRC needs to be reversed before returned. @@ -126,4 +125,21 @@ uint32_t CRC16_CCITT(uint8_t *buff, size_t size) { for ( int i=0; i < size; ++i) crc_update(&crc, buff[i], 8); return crc_finish(&crc); +} +//width=16 poly=0x8408 init=0xffff refin=false refout=true xorout=0xffff check=0xF0B8 name="CRC-16/ISO/IEC 13239" +uint32_t CRC16_Iso15693(uint8_t *buff, size_t size) { + crc_t crc; + crc_init_ref(&crc, 16, 0x8408, 0xFFFF, 0xFFFF, true, false); + for ( int i=0; i < size; ++i) + crc_update(&crc, buff[i], 8); + return reflect(crc_finish(&crc), 16); +} +//width=16 poly=0x8408 init=0xffff refin=true refout=true xorout=0x0BC3 check=0xF0B8 name="CRC-16/ICLASS" +uint32_t CRC16_ICLASS(uint8_t *buff, size_t size) { + + crc_t crc; + crc_init_ref(&crc, 16, 0x8408, 0xFFFF, 0x0BC3, false, false); + for ( int i=0; i < size; ++i) + crc_update(&crc, buff[i], 8); + return crc_finish(&crc); } \ No newline at end of file