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Implemented new optimized version of MAC-calculation for iclass

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This commit is contained in:
Martin Holst Swende 2015-02-26 20:35:35 +01:00
commit 10a8875c72
7 changed files with 9 additions and 698 deletions
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6
armsrc/iclass.c
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@ -47,8 +47,9 @@
// different initial value (CRC_ICLASS)
#include "iso14443crc.h"
#include "iso15693tools.h"
#include "cipher.h"
#include "protocols.h"
#include "optimized_cipher.h"
static int timeout = 4096;
@ -1213,13 +1214,14 @@ int doIClassSimulation( int simulationMode, uint8_t *reader_mac_buf)
//Put nr there
memcpy(ccnr+8, receivedCmd+1,4);
//Now, calc MAC
doMAC(ccnr,diversified_key, data_generic_trace);
opt_doMAC(ccnr,diversified_key, data_generic_trace);
trace_data = data_generic_trace;
trace_data_size = 4;
CodeIClassTagAnswer(trace_data , trace_data_size);
memcpy(data_response, ToSend, ToSendMax);
modulated_response = data_response;
modulated_response_size = ToSendMax;
//exitLoop = true;
}else
{ //Not fullsim, we don't respond
// We do not know what to answer, so lets keep quiet