Merge pull request #127 from frederikmoellers/master

ISO 14443 type B support for (German) electronic ID cards
This commit is contained in:
Martin Holst Swende 2015-07-13 12:22:10 +02:00
commit a83d091885
6 changed files with 198 additions and 44 deletions

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@ -4,6 +4,8 @@ This project uses the changelog in accordance with [keepchangelog](http://keepac
## [unreleased][unreleased]
### Changed
- EPA functions (`hf epa`) now support both ISO 14443-A and 14443-B cards (frederikmoellers)
## [2.2.0][2015-07-12]

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@ -12,10 +12,11 @@
//-----------------------------------------------------------------------------
#include "iso14443a.h"
#include "iso14443b.h"
#include "epa.h"
#include "cmd.h"
// Protocol and Parameter Selection Request
// Protocol and Parameter Selection Request for ISO 14443 type A cards
// use regular (1x) speed in both directions
// CRC is already included
static const uint8_t pps[] = {0xD0, 0x11, 0x00, 0x52, 0xA6};
@ -100,6 +101,28 @@ static struct {
// lengths of the replay APDUs
static uint8_t apdu_lengths_replay[5];
// type of card (ISO 14443 A or B)
static char iso_type = 0;
//-----------------------------------------------------------------------------
// Wrapper for sending APDUs to type A and B cards
//-----------------------------------------------------------------------------
int EPA_APDU(uint8_t *apdu, size_t length, uint8_t *response)
{
switch(iso_type)
{
case 'a':
return iso14_apdu(apdu, (uint16_t) length, response);
break;
case 'b':
return iso14443b_apdu(apdu, length, response);
break;
default:
return 0;
break;
}
}
//-----------------------------------------------------------------------------
// Closes the communication channel and turns off the field
//-----------------------------------------------------------------------------
@ -107,6 +130,7 @@ void EPA_Finish()
{
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
LEDsoff();
iso_type = 0;
}
//-----------------------------------------------------------------------------
@ -204,26 +228,26 @@ int EPA_Read_CardAccess(uint8_t *buffer, size_t max_length)
int rapdu_length = 0;
// select the file EF.CardAccess
rapdu_length = iso14_apdu((uint8_t *)apdu_select_binary_cardaccess,
rapdu_length = EPA_APDU((uint8_t *)apdu_select_binary_cardaccess,
sizeof(apdu_select_binary_cardaccess),
response_apdu);
if (rapdu_length != 6
if (rapdu_length < 6
|| response_apdu[rapdu_length - 4] != 0x90
|| response_apdu[rapdu_length - 3] != 0x00)
{
Dbprintf("epa - no select cardaccess");
DbpString("Failed to select EF.CardAccess!");
return -1;
}
// read the file
rapdu_length = iso14_apdu((uint8_t *)apdu_read_binary,
rapdu_length = EPA_APDU((uint8_t *)apdu_read_binary,
sizeof(apdu_read_binary),
response_apdu);
if (rapdu_length <= 6
|| response_apdu[rapdu_length - 4] != 0x90
|| response_apdu[rapdu_length - 3] != 0x00)
{
Dbprintf("epa - no read cardaccess");
Dbprintf("Failed to read EF.CardAccess!");
return -1;
}
@ -338,7 +362,7 @@ int EPA_PACE_Get_Nonce(uint8_t requested_length, uint8_t *nonce)
// send it
uint8_t response_apdu[262];
int send_return = iso14_apdu(apdu,
int send_return = EPA_APDU(apdu,
sizeof(apdu),
response_apdu);
// check if the command succeeded
@ -409,7 +433,7 @@ int EPA_PACE_MSE_Set_AT(pace_version_info_t pace_version_info, uint8_t password)
apdu[4] = apdu_length - 5;
// send it
uint8_t response_apdu[6];
int send_return = iso14_apdu(apdu,
int send_return = EPA_APDU(apdu,
apdu_length,
response_apdu);
// check if the command succeeded
@ -460,16 +484,13 @@ void EPA_PACE_Replay(UsbCommand *c)
return;
}
// increase the timeout (at least some cards really do need this!)/////////////
// iso14a_set_timeout(0x0003FFFF);
// response APDU
uint8_t response_apdu[300] = {0};
// now replay the data and measure the timings
for (int i = 0; i < sizeof(apdu_lengths_replay); i++) {
StartCountUS();
func_return = iso14_apdu(apdus_replay[i].data,
func_return = EPA_APDU(apdus_replay[i].data,
apdu_lengths_replay[i],
response_apdu);
timings[i] = GetCountUS();
@ -501,18 +522,33 @@ int EPA_Setup()
uint8_t pps_response_par[1];
iso14a_card_select_t card_select_info;
// first, look for type A cards
// power up the field
iso14443a_setup(FPGA_HF_ISO14443A_READER_MOD);
// select the card
return_code = iso14443a_select_card(uid, &card_select_info, NULL);
if (return_code != 1) {
return 1;
}
if (return_code == 1) {
// send the PPS request
ReaderTransmit((uint8_t *)pps, sizeof(pps), NULL);
return_code = ReaderReceive(pps_response, pps_response_par);
if (return_code != 3 || pps_response[0] != 0xD0) {
return return_code == 0 ? 2 : return_code;
}
Dbprintf("ISO 14443 Type A");
iso_type = 'a';
return 0;
}
// if we're here, there is no type A card, so we look for type B
// power up the field
iso14443b_setup();
// select the card
return_code = iso14443b_select_card();
if (return_code == 1) {
Dbprintf("ISO 14443 Type B");
iso_type = 'b';
return 0;
}
Dbprintf("No card found.");
return 1;
}

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@ -19,7 +19,7 @@ typedef struct {
uint8_t parameter_id;
} pace_version_info_t;
// note: EPA_PACE_Collect_Nonce is declared in apps.h
// note: EPA_PACE_Collect_Nonce and EPA_PACE_Replay are declared in apps.h
// general functions
void EPA_Finish();

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@ -19,6 +19,9 @@
#define RECEIVE_SAMPLES_TIMEOUT 2000
#define ISO14443B_DMA_BUFFER_SIZE 256
// PCB Block number for APDUs
static uint8_t pcb_blocknum = 0;
//=============================================================================
// An ISO 14443 Type B tag. We listen for commands from the reader, using
// a UART kind of thing that's implemented in software. When we get a
@ -896,6 +899,98 @@ static void CodeAndTransmit14443bAsReader(const uint8_t *cmd, int len)
}
}
/* Sends an APDU to the tag
* TODO: check CRC and preamble
*/
int iso14443b_apdu(uint8_t const *message, size_t message_length, uint8_t *response)
{
uint8_t message_frame[message_length + 4];
// PCB
message_frame[0] = 0x0A | pcb_blocknum;
pcb_blocknum ^= 1;
// CID
message_frame[1] = 0;
// INF
memcpy(message_frame + 2, message, message_length);
// EDC (CRC)
ComputeCrc14443(CRC_14443_B, message_frame, message_length + 2, &message_frame[message_length + 2], &message_frame[message_length + 3]);
// send
CodeAndTransmit14443bAsReader(message_frame, message_length + 4);
// get response
GetSamplesFor14443bDemod(RECEIVE_SAMPLES_TIMEOUT*100, TRUE);
if(Demod.len < 3)
{
return 0;
}
// TODO: Check CRC
// copy response contents
if(response != NULL)
{
memcpy(response, Demod.output, Demod.len);
}
return Demod.len;
}
/* Perform the ISO 14443 B Card Selection procedure
* Currently does NOT do any collision handling.
* It expects 0-1 cards in the device's range.
* TODO: Support multiple cards (perform anticollision)
* TODO: Verify CRC checksums
*/
int iso14443b_select_card()
{
// WUPB command (including CRC)
// Note: WUPB wakes up all tags, REQB doesn't wake up tags in HALT state
static const uint8_t wupb[] = { 0x05, 0x00, 0x08, 0x39, 0x73 };
// ATTRIB command (with space for CRC)
uint8_t attrib[] = { 0x1D, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00};
// first, wake up the tag
CodeAndTransmit14443bAsReader(wupb, sizeof(wupb));
GetSamplesFor14443bDemod(RECEIVE_SAMPLES_TIMEOUT, TRUE);
// ATQB too short?
if (Demod.len < 14)
{
return 2;
}
// select the tag
// copy the PUPI to ATTRIB
memcpy(attrib + 1, Demod.output + 1, 4);
/* copy the protocol info from ATQB (Protocol Info -> Protocol_Type) into
ATTRIB (Param 3) */
attrib[7] = Demod.output[10] & 0x0F;
ComputeCrc14443(CRC_14443_B, attrib, 9, attrib + 9, attrib + 10);
CodeAndTransmit14443bAsReader(attrib, sizeof(attrib));
GetSamplesFor14443bDemod(RECEIVE_SAMPLES_TIMEOUT, TRUE);
// Answer to ATTRIB too short?
if(Demod.len < 3)
{
return 2;
}
// reset PCB block number
pcb_blocknum = 0;
return 1;
}
// Set up ISO 14443 Type B communication (similar to iso14443a_setup)
void iso14443b_setup() {
FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
// Set up the synchronous serial port
FpgaSetupSsc();
// connect Demodulated Signal to ADC:
SetAdcMuxFor(GPIO_MUXSEL_HIPKD);
// Signal field is on with the appropriate LED
LED_D_ON();
FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_TX | FPGA_HF_READER_TX_SHALLOW_MOD);
// Start the timer
StartCountSspClk();
DemodReset();
UartReset();
}
//-----------------------------------------------------------------------------
// Read a SRI512 ISO 14443B tag.

21
armsrc/iso14443b.h Normal file
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@ -0,0 +1,21 @@
//-----------------------------------------------------------------------------
// Merlok - June 2011
// Gerhard de Koning Gans - May 2008
// Hagen Fritsch - June 2010
//
// This code is licensed to you under the terms of the GNU GPL, version 2 or,
// at your option, any later version. See the LICENSE.txt file for the text of
// the license.
//-----------------------------------------------------------------------------
// Routines to support ISO 14443 type A.
//-----------------------------------------------------------------------------
#ifndef __ISO14443B_H
#define __ISO14443B_H
#include "common.h"
int iso14443b_apdu(uint8_t const *message, size_t message_length, uint8_t *response);
void iso14443b_setup();
int iso14443b_select_card();
#endif /* __ISO14443B_H */