From: iceman1001 Date: Thu, 29 Sep 2016 10:29:42 +0000 (+0200) Subject: FIX: forgot I removed some other stuff X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/commitdiff_plain/b7e8338d2b15b636017118e983c849f3de6784ae FIX: forgot I removed some other stuff --- diff --git a/common/crc.c b/common/crc.c index 540ae668..f8179008 100644 --- a/common/crc.c +++ b/common/crc.c @@ -35,29 +35,21 @@ void crc_clear(crc_t *crc) { crc->state = reflect(crc->state, crc->order); } -void crc_update(crc_t *crc, uint32_t indata, int data_width){ - - uint32_t poly = crc->polynom; - - // if requested, return the initial CRC */ - if (indata == 0) - return crc->initial_value; - - //reflected +void crc_update(crc_t *crc, uint32_t data, int data_width){ + if (crc->refin) - indata = reflect(indata, data_width); + data = reflect(data, data_width); // Bring the next byte into the remainder. - crc->state ^= indata << (crc->order - data_width); + crc->state ^= data << (crc->order - data_width); for( uint8_t bit = data_width; bit > 0; --bit) { - // Try to divide the current data bit. + if (crc->state & crc->topbit) - crc->state = (crc->state << 1) ^ poly; + crc->state = (crc->state << 1) ^ crc->polynom; else crc->state = (crc->state << 1); } - return crc ^ model->xorout; } void crc_update2(crc_t *crc, uint32_t data, int data_width)