tools/cryptorf/sm.c

   1 /*
   2  *
   3  * SecureMemory simulation
   4  *
   5  * Copyright (C) 2010, Flavio D. Garcia, Peter van Rossum, Roel Verdult
   6  * and Ronny Wichers Schreur. Radboud University Nijmegen
   7  *
   8  * This program is free software: you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation, either version 3 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20  *
  21  */
  22
  23 #include <inttypes.h>
  24 #include <stddef.h>
  25 #include <stdio.h>
  26 #include "cryptolib.h"
  27 #include "util.h"
  28 #ifdef _MSC_VER
  29 // avoid scanf warnings in Visual Studio
  30 #define _CRT_SECURE_NO_WARNINGS
  31 #define _CRT_SECURE_NO_DEPRECATE
  32 #endif
  33
  34 int main(int argc, const char *argv[]) {
  35     // Cryptomemory state
  36     crypto_state_t s;
  37     size_t pos;
  38
  39     uint8_t    Q[8] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; // Reader random
  40     uint8_t   Gc[8] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; // Secret seed
  41     uint8_t   Ci[8] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; // Card random (last state)
  42     uint8_t   Ch[8] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; // Reader answer
  43     uint8_t Ci_1[8] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; // Card answer
  44
  45     // Various argument options
  46     uint64_t nGc; // Card secret
  47     uint64_t nCi; // Card random
  48     uint64_t nQ; // Reader main-random
  49
  50     // Show header and help syntax
  51     printf("SecureMemory simulator - (c) Radboud University Nijmegen\n");
  52     if (argc < 4) {
  53         printf("\nsyntax: sm <Gc> <Ci> <Q>\n");
  54         return 1;
  55     }
  56
  57     // Parse arguments
  58     sscanf(argv[1], "%016" SCNx64, &nGc);
  59     num_to_bytes(nGc, 8, Gc);
  60     sscanf(argv[2], "%016" SCNx64, &nCi);
  61     num_to_bytes(nCi, 8, Ci);
  62     sscanf(argv[3], "%016" SCNx64, &nQ);
  63     num_to_bytes(nQ, 8, Q);
  64
  65     // Calculate authentication
  66     sm_auth(Gc, Ci, Q, Ch, Ci_1, &s);
  67
  68     printf("\nAuthentication info\n\n");
  69     printf("  Gc: ");
  70     print_bytes(Gc, 8);
  71     printf("  Ci: ");
  72     print_bytes(Ci, 8);
  73     printf("   Q: ");
  74     print_bytes(Q, 8);
  75     printf("  Ch: ");
  76     print_bytes(Ch, 8);
  77     printf("Ci+1: ");
  78     print_bytes(Ci_1, 8);
  79     printf("\n");
  80     printf("  Ks: ");
  81     for (pos = 0; pos < 8; pos++) {
  82         printf("%02x ", Ci_1[pos]);
  83         printf("%02x ", Ch[pos]);
  84     }
  85     printf("\n\n");
  86
  87     return 0;
  88 }