+++ /dev/null
-#include <stdio.h>
-#include <stdlib.h>
-#include "des.h"
-
-int main(int argc, const char* argv[]) {
- des_context ctx;
-
- unsigned char key[8] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
- printf("Key: ");
- for (int i = 0; i < 8; i++) {
- printf("%02x ", key[i]);
- }
- printf("\n\n");
-
- // This is the challange sent from PICC
- unsigned char ek0RandB[8] = {0x4f, 0xb1, 0xed, 0x2e, 0x11, 0x37, 0xd5, 0x1a};
-
- if (argc == 8 + 1) {
- for (int i = 0 + 1; i < 8 + 1; i++) {
- ek0RandB[i - 1] = strtol(argv[i], NULL, 16);
- }
- }
-
- printf("ek0RandB (Challange): ");
- for (int i = 0; i < 8; i++) {
- printf("%02x ", ek0RandB[i]);
- }
- printf("\n\n");
-
- unsigned char RandB[8];
- unsigned char RandBP[8];
- unsigned char ek0RandBP[8];
-
- // TODO: Make this randomly generated
- unsigned char RandA[8] = {0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
- unsigned char ek0RandA[8];
-
- unsigned char sessionKey[8];
-
- des_setkey_dec(&ctx, key);
-
- //Decrypt RandB from PICC
- des_crypt_ecb(&ctx, ek0RandB, RandB);
-
- printf("RandB: ");
- for (int i = 0; i < 8; i++) {
- printf("%02x ", RandB[i]);
- }
- printf("\n");
-
- //Shift RandB left by 8 bits to produce RandB’
- for (int x = 0; x < 7; x++) {
- RandBP[x] = RandB[x + 1];
- }
- RandBP[7] = RandB[0];
-
- printf("RandB’: ");
- for (int i = 0; i < 8; i++) {
- printf("%02x ", RandBP[i]);
- }
- printf("\n");
-
- //Print RandA
- printf("RandA: ");
- for (int i = 0; i < 8; i++) {
- printf("%02x ", RandA[i]);
- }
- printf("\n\n");
-
- //Encrypt RandA into ek0RandA
- des_crypt_ecb(&ctx, RandA, ek0RandA);
-
- printf("ek0RandA: ");
- for (int i = 0; i < 8; i++) {
- printf("%02x ", ek0RandA[i]);
- }
- printf("\n");
-
- //Encrypt ( ek0RandA XOR RandB' ) for CBC Mode chaining
- for (int i = 0; i < 8; i++) {
- ek0RandBP[i] = RandBP[i] ^ ek0RandA[i];
- }
-
- des_crypt_ecb(&ctx, ek0RandBP, ek0RandBP);
-
- printf("ek0(RandB' XOR ek0RandA): ");
- for (int i = 0; i < 8; i++) {
- printf("%02x ", ek0RandBP[i]);
- }
- printf("\n\n");
-
- //Varibles used in checking for proper reply from PICC
- unsigned char RandAP[8];
- unsigned char ek0RandAP[8];
-
- //Shift RandA left by 8 bits to produce RandA’
- for (int x = 0; x < 7; x++) {
- RandAP[x] = RandA[x + 1];
- }
- RandAP[7] = RandA[0];
-
- //Encrypt RandA' to check PICC's response.
- des_crypt_ecb(&ctx, RandAP, ek0RandAP);
-
- printf("ek0RandA' (Expected reply): ");
- for (int i = 0; i < 8; i++) {
- printf("%02x ", ek0RandAP[i]);
- }
- printf("\n");
-
- //Create session key
- sessionKey[0] = RandA[0];
- sessionKey[1] = RandA[1];
- sessionKey[2] = RandA[2];
- sessionKey[3] = RandA[3];
- sessionKey[4] = RandB[0];
- sessionKey[5] = RandB[1];
- sessionKey[6] = RandB[2];
- sessionKey[7] = RandB[3];
-
- printf("Session Key: ");
- for (int i = 0; i < 8; i++) {
- printf("%02x ", sessionKey[i]);
- }
- printf("\n");
-
- return 1;
-}
-
-/*
- Recorded Activity
-
- Start = Start of Start Bit, End = End of last modulation. Src = Source of Transfer
- All times are in carrier periods (1/13.56Mhz)
-
- Start | End | Src | Data
- -----------|-----------|-----|--------
- 0 | 992 | Rdr | 52
- 2228 | 4596 | Tag | 44 03
- 1836032 | 1838496 | Rdr | 93 20
- 1839668 | 1845492 | Tag | 88 04 6e 22 c0
- 3806976 | 3817440 | Rdr | 93 70 88 04 6e 22 c0 dc b8
- 3818676 | 3822196 | Tag | 24 d8 36
- 5815808 | 5818272 | Rdr | 95 20
- 5819444 | 5825268 | Tag | 72 63 34 80 a5
- 7757824 | 7768288 | Rdr | 95 70 72 63 34 80 a5 a7 a5
- 7769524 | 7773108 | Tag | 20 fc 70
- 9715072 | 9719840 | Rdr | e0 80 31 73
- 9721012 | 9730292 | Tag | 06 75 77 81 02 80 02 f0
- 12074624 | 12080480 | Rdr | 02 0a 00 dc ed
- 12111924 | 12125812 | Tag | 02 af 4f b1 ed 2e 11 37 d5 1a bf 55
- 229214720 | 229237856 | Rdr | 03 af f3 56 83 43 79 d1 65 cd 6c 6d 17 e8 14 6e 52 eb 6d 2b
- 229268916 | 229282804 | Tag | 03 00 0d 9f 27 9b a5 d8 72 60 f3 6f
-*/
-
-/*
- hf 14a raw -p -a -b 7 52
- hf 14a raw -p 93 20
- hf 14a raw -p -c 93 70 88 04 6e 22 c0
- hf 14a raw -p 95 20
- hf 14a raw -p -c 95 70 72 63 34 80 a5
- hf 14a raw -p e0 80 31 73
- hf 14a raw -p -c 02 0a 00
- hf 14a raw -p -c 03 af ...
-*/
\ No newline at end of file