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Successfully decrypted RandB from PICC challenge

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This commit is contained in:
Blaine Forbort 2014-12-19 12:15:45 -08:00
parent de9b66bc36
commit b6f41bfdfe
1 changed files with 27 additions and 5 deletions
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32
armsrc/mifaredesfire.c
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@ -1,4 +1,5 @@
#include "mifaredesfire.h"
#include "des.h"
#define MAX_APPLICATION_COUNT 28
#define MAX_FILE_COUNT 16
@ -186,7 +187,7 @@ void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno, uint8_t *datain
int len = 0;
//uint8_t PICC_MASTER_KEY8[8] = { 0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47};
uint8_t PICC_MASTER_KEY16[16] = { 0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47,0x48,0x49,0x4a,0x4b,0x4c,0x4d,0x4e,0x4f };
//uint8_t null_key_data8[8] = {0x00};
uint8_t null_key_data8[8] = {0x00};
//uint8_t null_key_data16[16] = {0x00};
//uint8_t new_key_data8[8] = { 0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77};
//uint8_t new_key_data16[16] = { 0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xAA,0xBB,0xCC,0xDD,0xEE,0xFF};
@ -216,10 +217,31 @@ void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno, uint8_t *datain
// des, nyckel 0,
switch (mode){
case 1:
// if ( SendDesfireCommand(AUTHENTICATE, &keyno, resp) > 0 ){
// // fick nonce från kortet
// }
case 1:{
uint8_t keybytes[8];
if (datain[1] == 0xff){
memcpy(keybytes,null_key_data8,8);
} else{
memcpy(keybytes, datain+1, datalen);
}
cmd[0] = AUTHENTICATE;
cmd[1] = 0x00; //keynumber
len = DesfireAPDU(cmd, 2, resp);
if ( !len ) {
if (MF_DBGLEVEL >= 1) {
DbpString("Authentication failed. Card timeout.");
}
OnError();
return;
}
memcpy( encRndB, resp+3, 8);
des_dec(&decRndB, &encRndB, &keybytes);
Dbprintf("RandB: %02x%02x%02x%02x%02x%02x%02x%02x",decRndB[0],decRndB[1],decRndB[2],decRndB[3],decRndB[4],decRndB[5],decRndB[6],decRndB[7]);
}
break;
case 2:
//SendDesfireCommand(AUTHENTICATE_ISO, &keyno, resp);