mirror of
https://github.com/RfidResearchGroup/proxmark3.git
synced 2024-11-15 22:29:52 +08:00
58 lines
1.8 KiB
C
58 lines
1.8 KiB
C
#include "crapto1/crapto1.h"
|
|
#define __STDC_FORMAT_MACROS
|
|
#include <inttypes.h>
|
|
#include <stdio.h>
|
|
|
|
int main(const int argc, const char *argv[]) {
|
|
struct Crypto1State *state;
|
|
uint32_t pos, uid, nt, nr, rr;
|
|
uint8_t ks3x[8], par[8][8];
|
|
uint64_t key_recovered;
|
|
uint64_t par_info;
|
|
uint64_t ks_info;
|
|
nr = rr = 0;
|
|
|
|
if (argc < 5) {
|
|
printf("\nsyntax: %s <uid> <nt> <par> <ks>\n", argv[0]);
|
|
printf("example: %s 92c0456b 73294ab7 a3fbfb537343eb7b 070608090e060a02\n\n", argv[0]);
|
|
return 1;
|
|
}
|
|
sscanf(argv[1], "%08x", &uid);
|
|
sscanf(argv[2], "%08x", &nt);
|
|
sscanf(argv[3], "%016" SCNx64, &par_info);
|
|
sscanf(argv[4], "%016" SCNx64, &ks_info);
|
|
|
|
// Reset the last three significant bits of the reader nonce
|
|
nr &= 0xffffff1f;
|
|
|
|
printf("\nuid(%08x) nt(%08x) par(%016" PRIx64 ") ks(%016" PRIx64 ")\n\n", uid, nt, par_info, ks_info);
|
|
|
|
for (pos = 0; pos < 8; pos++) {
|
|
ks3x[7 - pos] = (ks_info >> (pos * 8)) & 0x0f;
|
|
uint8_t bt = (par_info >> (pos * 8)) & 0xff;
|
|
|
|
for (uint8_t i = 0; i < 8; i++) {
|
|
par[7 - pos][i] = (bt >> i) & 0x01;
|
|
}
|
|
}
|
|
|
|
printf("|diff|{nr} |ks3|ks3^5|parity |\n");
|
|
printf("+----+--------+---+-----+---------------+\n");
|
|
|
|
for (uint8_t i = 0; i < 8; i++) {
|
|
uint32_t nr_diff = nr | i << 5;
|
|
printf("| %02x |%08x| %01x | %01x |", i << 5, nr_diff, ks3x[i], ks3x[i] ^ 5);
|
|
|
|
for (pos = 0; pos < 7; pos++)
|
|
printf("%01x,", par[i][pos]);
|
|
printf("%01x|\n", par[i][7]);
|
|
}
|
|
printf("+----+--------+---+-----+---------------+\n");
|
|
|
|
state = lfsr_common_prefix(nr, rr, ks3x, par, false);
|
|
lfsr_rollback_word(state, uid ^ nt, 0);
|
|
crypto1_get_lfsr(state, &key_recovered);
|
|
printf("\nkey recovered: %012" PRIx64 "\n\n", key_recovered);
|
|
crypto1_destroy(state);
|
|
return 0;
|
|
}
|