mirror of
https://github.com/Proxmark/proxmark3.git
synced 2024-11-21 04:50:14 -08:00
123 lines
3.9 KiB
C
123 lines
3.9 KiB
C
//-----------------------------------------------------------------------------
|
|
// Merlok - June 2011
|
|
// Roel - Dec 2009
|
|
// Unknown author
|
|
//
|
|
// 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.
|
|
//-----------------------------------------------------------------------------
|
|
// MIFARE Darkside hack
|
|
//-----------------------------------------------------------------------------
|
|
|
|
#include "mfkey.h"
|
|
|
|
#include "mifare.h"
|
|
#include "crapto1/crapto1.h"
|
|
|
|
|
|
// recover key from 2 different reader responses on same tag challenge
|
|
bool mfkey32(nonces_t data, uint64_t *outputkey) {
|
|
struct Crypto1State *s,*t;
|
|
uint64_t outkey = 0;
|
|
uint64_t key = 0; // recovered key
|
|
bool isSuccess = false;
|
|
uint8_t counter = 0;
|
|
|
|
s = lfsr_recovery32(data.ar ^ prng_successor(data.nonce, 64), 0);
|
|
|
|
for(t = s; t->odd | t->even; ++t) {
|
|
lfsr_rollback_word(t, 0, 0);
|
|
lfsr_rollback_word(t, data.nr, 1);
|
|
lfsr_rollback_word(t, data.cuid ^ data.nonce, 0);
|
|
crypto1_get_lfsr(t, &key);
|
|
crypto1_word(t, data.cuid ^ data.nonce, 0);
|
|
crypto1_word(t, data.nr2, 1);
|
|
if (data.ar2 == (crypto1_word(t, 0, 0) ^ prng_successor(data.nonce, 64))) {
|
|
//PrintAndLog("Found Key: [%012" PRIx64 "]",key);
|
|
outkey = key;
|
|
counter++;
|
|
if (counter == 20) break;
|
|
}
|
|
}
|
|
isSuccess = (counter == 1);
|
|
*outputkey = ( isSuccess ) ? outkey : 0;
|
|
crypto1_destroy(s);
|
|
/* //un-comment to save all keys to a stats.txt file
|
|
FILE *fout;
|
|
if ((fout = fopen("stats.txt","ab")) == NULL) {
|
|
PrintAndLog("Could not create file name stats.txt");
|
|
return 1;
|
|
}
|
|
fprintf(fout, "mfkey32,%d,%08x,%d,%s,%04x%08x,%.0Lf\r\n", counter, data.cuid, data.sector, (data.keytype) ? "B" : "A", (uint32_t)(outkey>>32) & 0xFFFF,(uint32_t)(outkey&0xFFFFFFFF),(long double)t1);
|
|
fclose(fout);
|
|
*/
|
|
return isSuccess;
|
|
}
|
|
|
|
// recover key from 2 reader responses on 2 different tag challenges
|
|
bool mfkey32_moebius(nonces_t data, uint64_t *outputkey) {
|
|
struct Crypto1State *s, *t;
|
|
uint64_t outkey = 0;
|
|
uint64_t key = 0; // recovered key
|
|
bool isSuccess = false;
|
|
int counter = 0;
|
|
|
|
s = lfsr_recovery32(data.ar ^ prng_successor(data.nonce, 64), 0);
|
|
|
|
for(t = s; t->odd | t->even; ++t) {
|
|
lfsr_rollback_word(t, 0, 0);
|
|
lfsr_rollback_word(t, data.nr, 1);
|
|
lfsr_rollback_word(t, data.cuid ^ data.nonce, 0);
|
|
crypto1_get_lfsr(t, &key);
|
|
|
|
crypto1_word(t, data.cuid ^ data.nonce2, 0);
|
|
crypto1_word(t, data.nr2, 1);
|
|
if (data.ar2 == (crypto1_word(t, 0, 0) ^ prng_successor(data.nonce2, 64))) {
|
|
//PrintAndLog("Found Key: [%012" PRIx64 "]",key);
|
|
outkey=key;
|
|
++counter;
|
|
if (counter==20)
|
|
break;
|
|
}
|
|
}
|
|
isSuccess = (counter == 1);
|
|
*outputkey = ( isSuccess ) ? outkey : 0;
|
|
crypto1_destroy(s);
|
|
/* // un-comment to output all keys to stats.txt
|
|
FILE *fout;
|
|
if ((fout = fopen("stats.txt","ab")) == NULL) {
|
|
PrintAndLog("Could not create file name stats.txt");
|
|
return 1;
|
|
}
|
|
fprintf(fout, "moebius,%d,%08x,%d,%s,%04x%08x,%0.Lf\r\n", counter, data.cuid, data.sector, (data.keytype) ? "B" : "A", (uint32_t) (outkey>>32),(uint32_t)(outkey&0xFFFFFFFF),(long double)t1);
|
|
fclose(fout);
|
|
*/
|
|
return isSuccess;
|
|
}
|
|
|
|
// recover key from reader response and tag response of one authentication sequence
|
|
int mfkey64(nonces_t data, uint64_t *outputkey){
|
|
uint64_t key = 0; // recovered key
|
|
uint32_t ks2; // keystream used to encrypt reader response
|
|
uint32_t ks3; // keystream used to encrypt tag response
|
|
struct Crypto1State *revstate;
|
|
|
|
// Extract the keystream from the messages
|
|
ks2 = data.ar ^ prng_successor(data.nonce, 64);
|
|
ks3 = data.at ^ prng_successor(data.nonce, 96);
|
|
revstate = lfsr_recovery64(ks2, ks3);
|
|
lfsr_rollback_word(revstate, 0, 0);
|
|
lfsr_rollback_word(revstate, 0, 0);
|
|
lfsr_rollback_word(revstate, data.nr, 1);
|
|
lfsr_rollback_word(revstate, data.cuid ^ data.nonce, 0);
|
|
crypto1_get_lfsr(revstate, &key);
|
|
// PrintAndLog("Found Key: [%012" PRIx64 "]", key);
|
|
crypto1_destroy(revstate);
|
|
*outputkey = key;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|