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Further implementation of iclass 'fullsim'. Moved protocol definitions to shared file. Had to add some loclass-function to arm-side to support authentication in fullsim mode

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This commit is contained in:
Martin Holst Swende 2015-02-18 20:02:44 +01:00
commit b67f7ec359
17 changed files with 1157 additions and 268 deletions
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29
client/loclass/cipher.c
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@ -39,14 +39,14 @@
#include "cipher.h"
#include "cipherutils.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <stdint.h>
#include <time.h>
//#include "fileutils.h"
uint8_t keytable[] = { 0,0,0,0,0,0,0,0};
#ifndef ON_DEVICE
#include "fileutils.h"
#endif
/**
* Definition 1 (Cipher state). A cipher state of iClass s is an element of F 40/2
@ -221,27 +221,27 @@ void MAC(uint8_t* k, BitstreamIn input, BitstreamOut out)
output(k,initState,&input_32_zeroes,&out);
}
void doMAC(uint8_t *cc_nr_p, int length, uint8_t *div_key_p, uint8_t mac[4])
void doMAC(uint8_t *cc_nr_p, uint8_t *div_key_p, uint8_t mac[4])
{
uint8_t *cc_nr;
uint8_t cc_nr[13] = { 0 };
uint8_t div_key[8];
cc_nr=(uint8_t*)malloc(length+1);
memcpy(cc_nr,cc_nr_p,length);
//cc_nr=(uint8_t*)malloc(length+1);
memcpy(cc_nr,cc_nr_p,12);
memcpy(div_key,div_key_p,8);
reverse_arraybytes(cc_nr,length);
BitstreamIn bitstream = {cc_nr,length * 8,0};
reverse_arraybytes(cc_nr,12);
BitstreamIn bitstream = {cc_nr,12 * 8,0};
uint8_t dest []= {0,0,0,0,0,0,0,0};
BitstreamOut out = { dest, sizeof(dest)*8, 0 };
MAC(div_key,bitstream, out);
//The output MAC must also be reversed
reverse_arraybytes(dest, sizeof(dest));
memcpy(mac, dest, 4);
//printf("Calculated_MAC\t%02x%02x%02x%02x\n", dest[0],dest[1],dest[2],dest[3]);
free(cc_nr);
//free(cc_nr);
return;
}
#ifndef ON_DEVICE
int testMAC()
{
prnlog("[+] Testing MAC calculation...");
@ -253,7 +253,7 @@ int testMAC()
uint8_t correct_MAC[4] = {0x1d,0x49,0xC9,0xDA};
uint8_t calculated_mac[4] = {0};
doMAC(cc_nr, 12,div_key, calculated_mac);
doMAC(cc_nr,div_key, calculated_mac);
if(memcmp(calculated_mac, correct_MAC,4) == 0)
{
@ -269,3 +269,4 @@ int testMAC()
return 0;
}
#endif