int nonce2key(uint32_t uid, uint32_t nt, uint32_t nr, uint64_t par_info, uint64_t ks_info, uint64_t * key) {
+
struct Crypto1State *state;
uint32_t i, pos, rr = 0, nr_diff;
byte_t bt, ks3x[8], par[8][8];
for ( i = 0; i < 8; i++) {
nr_diff = nr | i << 5;
- printf("| %02x |%08x|", i << 5, nr_diff);
- printf(" %01x | %01x |", ks3x[i], ks3x[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");
+ clock_t t1 = clock();
+
state = lfsr_common_prefix(nr, rr, ks3x, par);
lfsr_rollback_word(state, uid^nt, 0);
crypto1_get_lfsr(state, key);
crypto1_destroy(state);
+
+ t1 = clock() - t1;
+ if ( t1 > 0 ) PrintAndLog("Time in nonce2key: %.0f ticks \n", (float)t1);
return 0;
}
pcs = &mpcs;
uid = myuid;//(uint32_t)bytes_to_num(data + 0, 4);
- nt = *(uint32_t*)(data+8);
- nr_enc = *(uint32_t*)(data+12);
- ar_enc = *(uint32_t*)(data+16);
+ nt = *(uint32_t*)(data+8);
+ nr_enc = *(uint32_t*)(data+12);
+ ar_enc = *(uint32_t*)(data+16);
crypto1_word(pcs, nr_enc , 1);
at_enc = prng_successor(nt, 96) ^ crypto1_word(pcs, 0, 0);
num_to_bytes(key, 6, outputkey);
crypto1_destroy(revstate);
return 0;
-}
\ No newline at end of file
+}