github/RRG-Proxmark3
1
0
Fork 0
mirror of https://github.com/RfidResearchGroup/proxmark3.git synced 2025-08-21 05:43:48 -07:00
Code Issues Projects Releases Packages Wiki Activity Actions 4

fpga: added iCLASS on deviceside

Browse source
This commit is contained in:
iceman1001 2020-07-10 16:37:56 +02:00
commit a25a5322dd
13 changed files with 1072 additions and 99 deletions
Download patch file Download diff file Expand all files Collapse all files

28
armsrc/optimized_cipher.c
View file

@ -77,7 +77,15 @@
-- piwi 2019
**/
/**
add the possibility to do iCLASS on device only
-- iceman 2020
**/
#include "optimized_cipher.h"
#include "optimized_elite.h"
#include "optimized_ikeys.h"
#include "optimized_cipherutils.h"
static const uint8_t opt_select_LUT[256] = {
00, 03, 02, 01, 02, 03, 00, 01, 04, 07, 07, 04, 06, 07, 05, 04,
@ -290,3 +298,23 @@ void opt_doTagMAC_2(State _init, uint8_t *nr, uint8_t mac[4], const uint8_t *di
opt_suc(div_key_p, &_init, nr, 4, true);
opt_output(div_key_p, &_init, mac);
}
void iclass_calc_div_key(uint8_t *csn, uint8_t *key, uint8_t *div_key, bool elite) {
if (elite) {
uint8_t keytable[128] = {0};
uint8_t key_index[8] = {0};
uint8_t key_sel[8] = { 0 };
uint8_t key_sel_p[8] = { 0 };
hash2(key, keytable);
hash1(csn, key_index);
for (uint8_t i = 0; i < 8 ; i++)
key_sel[i] = keytable[key_index[i]];
//Permute from iclass format to standard format
permutekey_rev(key_sel, key_sel_p);
diversifyKey(csn, key_sel_p, div_key);
} else {
diversifyKey(csn, key, div_key);
}
}