X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/68d9d60a4d5a4696faf3e36a9a8a7f10ed5bdd22..refs/pull/493/head:/common/crc.c diff --git a/common/crc.c b/common/crc.c index 817272eb..0c73474f 100644 --- a/common/crc.c +++ b/common/crc.c @@ -1,11 +1,13 @@ -/* - * crc.c - * - * Generic CRC calculation code. - * - */ - +//----------------------------------------------------------------------------- +// This code is licensed to you under the terms of the GNU GPL, version 2 or, +// at your option, any later version. See the LICENSE.txt file for the text of +// the license. +//----------------------------------------------------------------------------- +// Generic CRC calculation code. +//----------------------------------------------------------------------------- #include "crc.h" +#include +#include void crc_init(crc_t *crc, int order, uint32_t polynom, uint32_t initial_value, uint32_t final_xor) { @@ -39,3 +41,16 @@ uint32_t crc_finish(crc_t *crc) { return ( crc->state ^ crc->final_xor ) & crc->mask; } + +//credits to iceman +uint32_t CRC8Maxim(uint8_t *buff, size_t size) +{ + crc_t crc; + crc_init(&crc, 9, 0x8c, 0x00, 0x00); + crc_clear(&crc); + + for (size_t i=0; i < size; ++i){ + crc_update(&crc, buff[i], 8); + } + return crc_finish(&crc); +}