changed iso14aapdu arm side and client

[proxmark3-svn] / armsrc / iso14443a.c

diff --git a/armsrc/iso14443a.c b/armsrc/iso14443a.c
index 90e8538eb531c7c23c7e795c3f1b15d907fa1221..45425e079db22ee3d4cb5a3275b1dc07f2a320a7 100644 (file)
--- a/armsrc/iso14443a.c
+++ b/armsrc/iso14443a.c
@@ -12,10 +12,11 @@
 
 #include "iso14443a.h"
 
+#include <stdio.h>
+#include <string.h>
 #include "proxmark3.h"
 #include "apps.h"
 #include "util.h"
-#include "string.h"
 #include "cmd.h"
 #include "iso14443crc.h"
 #include "crapto1/crapto1.h"
@@ -1873,29 +1874,47 @@ void iso14443a_setup(uint8_t fpga_minor_mode) {
 
 int iso14_apdu(uint8_t *cmd, uint16_t cmd_len, void *data) {
        uint8_t parity[MAX_PARITY_SIZE];
-       uint8_t real_cmd[cmd_len+4];
-       real_cmd[0] = 0x0a; //I-Block
+       uint8_t real_cmd[cmd_len + 4];
+       
+       // ISO 14443 APDU frame: PCB [CID] [NAD] APDU CRC PCB=0x02
+       real_cmd[0] = 0x02; // bnr,nad,cid,chn=0; i-block(0x00) 
        // put block number into the PCB
        real_cmd[0] |= iso14_pcb_blocknum;
-       real_cmd[1] = 0x00; //CID: 0 //FIXME: allow multiple selected cards
-       memcpy(real_cmd+2, cmd, cmd_len);
-       AppendCrc14443a(real_cmd,cmd_len+2);
+       memcpy(real_cmd + 1, cmd, cmd_len);
+       AppendCrc14443a(real_cmd, cmd_len + 1);
  
-       ReaderTransmit(real_cmd, cmd_len+4, NULL);
+       ReaderTransmit(real_cmd, cmd_len + 3, NULL);
+
        size_t len = ReaderReceive(data, parity);
        uint8_t *data_bytes = (uint8_t *) data;
-       if (!len)
+
+       if (!len) {
                return 0; //DATA LINK ERROR
+               
        // if we received an I- or R(ACK)-Block with a block number equal to the
        // current block number, toggle the current block number
-       else if (len >= 4 // PCB+CID+CRC = 4 bytes
+       } else{
+               if (len >= 3 // PCB+CRC = 3 bytes
                 && ((data_bytes[0] & 0xC0) == 0 // I-Block
                     || (data_bytes[0] & 0xD0) == 0x80) // R-Block with ACK bit set to 0
                 && (data_bytes[0] & 0x01) == iso14_pcb_blocknum) // equal block numbers
-       {
-               iso14_pcb_blocknum ^= 1;
-       }
+               {
+                       iso14_pcb_blocknum ^= 1;
+               }
 
+               // crc check
+               if (len >=3 && !CheckCrc14443(CRC_14443_A, data_bytes, len)) {
+                       return -1;
+               }
+               
+       }
+       
+       // cut frame byte
+       len -= 1;
+       // memmove(data_bytes, data_bytes + 1, len);
+       for (int i = 0; i < len; i++)
+               data_bytes[i] = data_bytes[i + 1];
+       
        return len;
 }
 
@@ -1952,7 +1971,7 @@ void ReaderIso14443a(UsbCommand *c)
        if(param & ISO14A_APDU && !cantSELECT) {
                arg0 = iso14_apdu(cmd, len, buf);
                LED_B_ON();
-               cmd_send(CMD_ACK,arg0,0,0,buf,sizeof(buf));
+               cmd_send(CMD_ACK, arg0, 0, 0, buf, sizeof(buf));
                LED_B_OFF();
        }