git.zerfleddert.de Git - proxmark3-svn/blob - client/hardnested/hardnested_bruteforce.h

   1 //-----------------------------------------------------------------------------
   2 // Copyright (C) 2016, 2017 by piwi
   3 //
   4 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
   5 // at your option, any later version. See the LICENSE.txt file for the text of
   6 // the license.
   7 //-----------------------------------------------------------------------------
   8 // Implements a card only attack based on crypto text (encrypted nonces
   9 // received during a nested authentication) only. Unlike other card only
  10 // attacks this doesn't rely on implementation errors but only on the
  11 // inherent weaknesses of the crypto1 cypher. Described in
  12 //   Carlo Meijer, Roel Verdult, "Ciphertext-only Cryptanalysis on Hardened
  13 //   Mifare Classic Cards" in Proceedings of the 22nd ACM SIGSAC Conference on
  14 //   Computer and Communications Security, 2015
  15 //-----------------------------------------------------------------------------
  16
  17 #ifndef HARDNESTED_BRUTEFORCE_H__
  18 #define HARDNESTED_BRUTEFORCE_H__
  19
  20 #include <stdint.h>
  21 #include <stdbool.h>
  22 #include "cmdhfmfhard.h"
  23
  24 typedef struct {
  25         uint32_t *states[2];
  26         uint32_t len[2];
  27         void* next;
  28 } statelist_t;
  29
  30 extern void prepare_bf_test_nonces(noncelist_t *nonces, uint8_t best_first_byte);
  31 extern bool brute_force_bs(float *bf_rate, statelist_t *candidates, uint32_t cuid, uint32_t num_acquired_nonces, uint64_t maximum_states, noncelist_t *nonces, uint8_t *best_first_bytes);
  32 extern float brute_force_benchmark();
  33 extern uint8_t trailing_zeros(uint8_t byte);
  34 extern bool verify_key(uint32_t cuid, noncelist_t *nonces, uint8_t *best_first_bytes, uint32_t odd, uint32_t even);
  35
  36 #endif