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GNU GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
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# Linux
###############################################
LIB_TYPE=so
LIB_FLAGS=-shared
PCSC_HEADERS=-I/usr/include/PCSC
PCSC_LIB=-lpcsclite -Wl,-rpath,.
###############################################
# MacOS X
###############################################
#LIB_TYPE=dylib
#LIB_FLAGS=-dynamiclib -flat_namespace -undefined suppress
#PCSC_HEADERS=-I/System/Library/Frameworks/PCSC.framework/Headers
#PCSC_LIB=-framework PCSC
CC = gcc
LD = gcc
CFLAGS = -fPIC -Wall -std=c99 -O4 $(PCSC_HEADERS)
LDFLAGS = -fPIC $(PCSC_LIB)
OBJS = acr122.o bitutils.o libnfc.o
HEADERS = acr122.h bitutils.h defines.h libnfc.h
LIB = libnfc.$(LIB_TYPE)
EXES = anticol list simulate relay mfread mfwrite
all: $(LIB) $(EXES)
acr122.o: acr122.c $(HEADERS)
bitutils.o: bitutils.c $(HEADERS)
libnfc.o: libnfc.c $(HEADERS)
%.s : %.c
$(CC) -S -dA $(CFLAGS) -o $@ $<
libnfc.$(LIB_TYPE): $(OBJS)
$(LD) $(LDFLAGS) -o $(LIB) $(LIB_FLAGS) $(OBJS)
anticol: $(OBJS)
$(LD) $(LDFLAGS) -o anticol anticol.c -L. -lnfc
list: $(OBJS)
$(LD) $(LDFLAGS) -o list list.c -L. -lnfc
simulate: $(OBJS)
$(LD) $(LDFLAGS) -o simulate simulate.c -L. -lnfc
relay: $(OBJS)
$(LD) $(LDFLAGS) -o relay relay.c -L. -lnfc
mfread: $(OBJS)
$(LD) $(LDFLAGS) -o mfread mfread.c -L. -lnfc
mfwrite: $(OBJS)
$(LD) $(LDFLAGS) -o mfwrite mfwrite.c -L. -lnfc
clean:
rm -f $(OBJS) $(LIB) $(EXES)

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------------------------------------------------------------------------
Public platform independent Near Field Communication (NFC) library
Copyright (C) 2009, Roel Verdult
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
------------------------------------------------------------------------
Welcome to the community of libnfc (website: http://www.libnfc.org).
libnfc version 1.0.0
Index:
1. Introduction
2. Hardware
3. Compilation
4. Examples
5. Todo
6. Contact
------------------------------------------------------------------------
1. Introduction
Since the RFID market is spoiled by proprietary hard and software
we want to contribute constructively by distributing a free library
which can be used in RFID/NFC applications.
------------------------------------------------------------------------
2. Hardware
To communicate with NFC targets/tags you need a USB device which is
called a "RFID Reader". The cheapest hardware around that can carries
a fully NFC complied chip is the ACR122 from the company ACS, Advanced
Card Systems Limited (website: http://www.acs.com.hk/acr122.php).
This reader uses the PN532 chipset from NXP Semiconductors. The reader
costs around the €60 and is available in different webshops all over
the world. The NFC reader used in the "tikitag" project is exactly the
same reader as the ACR122 but with a different logo. This reader is
available for only €35,- (website: http://www.tikitag.com). We would
recommend to use one of these readers, since we tested both of them.
Other NFC readers, like the SCL3710 from SCM Microsystems (website:
http://www.scmmicro.com/scl3710/) are not supported yet. They use the
same chipset, so the instruction set is completely the same. This means
that with little effort these readers could be added to be part of the
NFC library. We would be very pleased if someone is willing to add this
support to libnfc.
------------------------------------------------------------------------
3. Compilation
If you use linux, please make sure you have libpcsc-lite installed.
For Ubuntu this means you have to install the following packages:
$sudo apt-get install pcscd
$sudo apt-get install libpcsclite-dev
When these are installed, just run "make" and you are ready to go.
MacOSX users have to edit the "Makefile" file in the main directory.
Uncomment the following lines:
#LIB_TYPE=...
#LIB_FLAGS=...
#PCSC_HEADERS=...
#PCSC_LIB=...
Run "make" and you it should work like a charm.
Windows users can use the binairy files located in the "win32bin"
directory. Or they can open the VS2005 solution which can be found
in the "win32" directory. Compilation should work "out of the box".
------------------------------------------------------------------------
4. Examples
There are 6 example tools coming with this library. They can be used
as a reference during development of your software. All tools try to
demonstrate a different feature. Below there is short description of
the tools and their purpose.
anticol - Anti-collision demonstration tool for ISO14443A tags using
self constructed REQA/WUPA and SELECT frames.
list - List passive tags tool for ISO14443A tags using the commands
available in the instruction set of the hardware chip.
simulate - With this example you can turn your reader into a NFC target.
For testing purposes it simulates a ISO14443A tag with a UID
that consists of 0xDEADBEAF. The frames are delayed because
of the USB communication, so not all readers will recognize
the tag. The "Omnikey 5121" though has no problems with this
small delay.
relay - This tool allows the user to use 2 readers. One will similate
a ISO14443A tag, while the 2nd reader will stay a reader.
The original tag can be placed on the 2nd reader and the
simulated tag can be placed on top of the original reader.
All communication is relayed now and showed on the screen.
NOTE: relaying frames is time-consuming, not all readers
allow slow responds from the (simulated) tag. Though, one of
the most used RFID readers, the "Omnikey 5121" has no problem
and can perfectly be used for demonstrating this features.
mfread - With this tool a complete MIFARE card can be readout and stored
in a MIFARE dump file (*.mfd).
mfwrite - With this tool a complete MIFARE card can be restored from a
a MIFARE dump file (*.mfd) back to the tag.
A MIFARE dump file (*.mfd) is a plain 4KB image of a mifare tag. This
image should contain the data, keys and access bits on their usual position.
A Dump file is always 4KB, even when a 1KB tag is dumped. From the first
block, the manufacturer data, can be determined if you are dealing with
a 1KB or a 4KB tag. This is stored in the ATQA part of block0 (byte 6/7).
More info can be found in the MIFARE functional specification from NXP.
(Website: http://www.nxp.com/products/identification/mifare/classic)
------------------------------------------------------------------------
5. Todo
Support more communication protocols. Sony Felica, ISO14443B and Innovision
Jewel Topaz tags are supported by the chipset, but they are not used by
this library. It would be very useful if we could add support for these
tags in this library.
------------------------------------------------------------------------
6. Contact
Please visit the website (http://www.libnfc.org) and place your questions
in the community forum there. We are sure a member of the community will
help you out.
------------------------------------------------------------------------
Proprietary notes:
Note: FeliCa is s registered trademark of Sony Corporation. MIFARE is a
trademark of NXP Semiconductors. Jewel Topaz is a trademark of Innovision
Research & Technology. All other trademarks are the property of their
respective owners.

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/*
Public platform independent Near Field Communication (NFC) library
Copyright (C) 2009, Roel Verdult
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <winscard.h>
#include <stdio.h>
#include <string.h>
#include "acr122.h"
#include "bitutils.h"
#define SCARD_OPERATION_SUCCESS 0x61
#define SCARD_OPERATION_ERROR 0x63
#define FIRMWARE_TEXT "ACR122U10" // ACR122U101(ACS), ACR122U102(Tikitag)
#define ACR122_WRAP_LEN 5
#define ACR122_COMMAND_LEN 266
#define ACR122_RESPONSE_LEN 268
#define MAX_READERS 16
static SCARDCONTEXT hCtx = null;
static byte abtTxBuf[ACR122_WRAP_LEN+ACR122_COMMAND_LEN] = { 0xFF, 0x00, 0x00, 0x00 };
static byte abtRxCmd[5] = { 0xFF,0xC0,0x00,0x00 };
static byte uiRxCmdLen = sizeof(abtRxCmd);
static byte abtRxBuf[ACR122_RESPONSE_LEN];
static ulong ulRxBufLen;
static byte abtGetFw[5] = { 0xFF,0x00,0x48,0x00,0x00 };
static byte abtLed[9] = { 0xFF,0x00,0x40,0x05,0x04,0x00,0x00,0x00,0x00 };
dev_id acr122_connect(const ui32 uiDeviceIndex)
{
SCARDHANDLE hCard = null;
char* pacReaders[MAX_READERS];
char acList[256+64*MAX_READERS];
ulong ulListLen = sizeof(acList);
ulong ulActiveProtocol = 0;
ui32 uiPos;
ui32 uiReaderCount;
ui32 uiReader;
ui32 uiReaderIndex;
// Clear the reader list
memset(acList,0x00,ulListLen);
// Test if context succeeded
if (SCardEstablishContext(SCARD_SCOPE_USER,null,null,&hCtx) != SCARD_S_SUCCESS) return INVALID_DEVICE_ID;
// Retrieve the string array of all available pcsc readers
if (SCardListReaders(hCtx,null,acList,(void*)&ulListLen) != SCARD_S_SUCCESS) return INVALID_DEVICE_ID;
pacReaders[0] = acList;
uiReaderCount = 1;
for (uiPos=0; uiPos<ulListLen; uiPos++)
{
// Make sure don't break out of our reader array
if (uiReaderCount == MAX_READERS) break;
// Test if there is a next reader available
if (acList[uiPos] == 0x00)
{
// Test if we are at the end of the list
if (acList[uiPos+1] == 0x00)
{
break;
}
// Store the position of the next reader and search for more readers
pacReaders[uiReaderCount] = acList+uiPos+1;
uiReaderCount++;
}
}
// Initialize the reader index we are seaching for
uiReaderIndex = uiDeviceIndex;
// Iterate through all readers and try to find the ACR122 on requested index
for (uiReader=0; uiReader<uiReaderCount; uiReader++)
{
// Test if we were able to connect to the "emulator" card
if (SCardConnect(hCtx,pacReaders[uiReader],SCARD_SHARE_SHARED,SCARD_PROTOCOL_T0 | SCARD_PROTOCOL_T1,&hCard,(void*)&ulActiveProtocol) == SCARD_S_SUCCESS)
{
if (strstr(acr122_firmware((void*)hCard),FIRMWARE_TEXT) != null)
{
// We found a occurence, test if it has the right index
if (uiReaderIndex == 0)
{
// Done, we found the reader we are looking for
return (void*)hCard;
} else {
// Let's look for the next reader
uiReaderIndex--;
}
}
}
}
// Too bad, the reader could not be located;
return INVALID_DEVICE_ID;
}
void acr122_disconnect(const dev_id di)
{
SCardDisconnect((SCARDHANDLE)di,SCARD_LEAVE_CARD);
}
bool acr122_transceive(const dev_id di, const byte* pbtTx, const ui32 uiTxLen, byte* pbtRx, ui32* puiRxLen)
{
if (di == null) return false;
// Make sure the command does not overflow the send buffer
if (uiTxLen > ACR122_COMMAND_LEN) return false;
// Store the length of the command we are going to send
abtTxBuf[4] = uiTxLen;
#ifdef _LIBNFC_VERBOSE_
printf("Tx: ");
print_hex(pbtTx,uiTxLen);
#endif
// Prepare and transmit the send buffer
memcpy(abtTxBuf+5,pbtTx,uiTxLen);
ulRxBufLen = sizeof(abtRxBuf);
if (SCardTransmit((SCARDHANDLE)di,SCARD_PCI_T0,abtTxBuf,uiTxLen+5,null,abtRxBuf,(void*)&ulRxBufLen) != SCARD_S_SUCCESS) return false;
// Make sure we received the byte-count we expected
if (ulRxBufLen != 2) return false;
// Check if the operation was successful, so an answer is available
if (*abtRxBuf == SCARD_OPERATION_ERROR) return false;
// Retrieve the response bytes
abtRxCmd[4] = abtRxBuf[1];
ulRxBufLen = sizeof(abtRxBuf);
if (SCardTransmit((SCARDHANDLE)di,SCARD_PCI_T0,abtRxCmd,uiRxCmdLen,null,abtRxBuf,(void*)&ulRxBufLen) != SCARD_S_SUCCESS) return false;
// When the answer should be ignored, just return true
if (pbtRx == null || puiRxLen == null) return true;
// Make sure we have an emulated answer that fits the return buffer
if (ulRxBufLen < 4 || (ulRxBufLen-4) > *puiRxLen) return false;
// Wipe out the 4 APDU emulation bytes: D5 4B .. .. .. 90 00
*puiRxLen = ulRxBufLen-4;
memcpy(pbtRx,abtRxBuf+2,*puiRxLen);
#ifdef _LIBNFC_VERBOSE_
printf("Rx: ");
print_hex(pbtRx,*puiRxLen);
#endif
// Transmission went successful
return true;
}
char* acr122_firmware(const dev_id di)
{
static char abtFw[11];
ulong ulFwLen = sizeof(abtFw);
memset(abtFw,0x00,ulFwLen);
SCardTransmit((SCARDHANDLE)di,SCARD_PCI_T0,abtGetFw,sizeof(abtGetFw),null,(byte*)abtFw,(void*)&ulFwLen);
return abtFw;
}
bool acr122_led_red(const dev_id di, bool bOn)
{
byte abtBuf[2];
ulong ulBufLen = sizeof(abtBuf);
return (SCardTransmit((SCARDHANDLE)di,SCARD_PCI_T0,abtLed,sizeof(abtLed),null,(byte*)abtBuf,(void*)&ulBufLen) == SCARD_S_SUCCESS);
}

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/*
Public platform independent Near Field Communication (NFC) library
Copyright (C) 2009, Roel Verdult
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _LIBNFC_ACR122_H_
#define _LIBNFC_ACR122_H_
#include "defines.h"
#include "types.h"
dev_id acr122_connect(const ui32 uiDeviceIndex);
void acr122_disconnect(const dev_id di);
bool acr122_transceive(const dev_id di, const byte* pbtTx, const ui32 uiTxLen, byte* pbtRx, ui32* puiRxLen);
bool acr122_transceive_(const dev_id di, const byte* pbtTx, const ui32 uiTxLen, byte* pbtRx, ui32* puiRxLen);
char* acr122_firmware(const dev_id di);
bool acr122_led_red(const dev_id di, bool bOn);
#endif // _LIBNFC_ACR122_H_

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/*
Public platform independent Near Field Communication (NFC) library
Copyright (C) 2009, Roel Verdult
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "libnfc.h"
static byte abtRecv[MAX_FRAME_LEN];
static ui32 uiRecvLen;
static byte abtUid[10];
static ui32 uiUidLen = 4;
static dev_id di;
// ISO14443A Anti-Collision Commands
byte abtWupa [1] = { 0x52 };
byte abtSelectAll [2] = { 0x93,0x20 };
byte abtSelectTag [9] = { 0x93,0x70,0x00,0x00,0x00,0x00,0x00,0x00,0x00 };
byte abtRats [4] = { 0xe0,0x50,0xbc,0xa5 };
byte abtHalt [4] = { 0x50,0x00,0x57,0xcd };
bool transmit_7bits(const byte btTx)
{
bool bResult;
printf("R: %02x\n",btTx);
uiRecvLen = MAX_FRAME_LEN;
bResult = nfc_reader_transceive_7bits(di,btTx,abtRecv,&uiRecvLen);
if (bResult)
{
printf("T: ");
print_hex(abtRecv,uiRecvLen);
}
return bResult;
}
bool transmit_bytes(const byte* pbtTx, const ui32 uiTxLen)
{
bool bResult;
printf("R: ");
print_hex(pbtTx,uiTxLen);
uiRecvLen = MAX_FRAME_LEN;
bResult = nfc_reader_transceive_bytes(di,pbtTx,uiTxLen,abtRecv,&uiRecvLen);
if (bResult)
{
printf("T: ");
print_hex(abtRecv,uiRecvLen);
}
return bResult;
}
int main(int argc, const char* argv[])
{
// Try to open the NFC reader
di = acr122_connect(0);
if (di == INVALID_DEVICE_ID)
{
printf("Error connecting NFC reader\n");
return 1;
}
nfc_reader_init(di);
// Let the reader only try once to find a tag
nfc_configure_list_passive_infinite(di,false);
// Drop the field so the tag will be reset
nfc_configure_field(di,false);
// Configure the communication channel, we use our own CRC
nfc_configure_handle_crc(di,false);
nfc_configure_handle_parity(di,true);
// Enable the field so the more power consuming tags will respond
nfc_configure_field(di,true);
printf("\nConnected to NFC reader\n\n");
if (!transmit_7bits(*abtWupa))
{
printf("Error: No tag available\n");
return 1;
}
// Anti-collision
transmit_bytes(abtSelectAll,2);
// Save the UID
memcpy(abtUid,abtRecv,4);
memcpy(abtSelectTag+2,abtRecv,5);
append_iso14443a_crc(abtSelectTag,7);
transmit_bytes(abtSelectTag,9);
if (abtUid[0] == 0x88)
{
abtSelectAll[0] = 0x95;
abtSelectTag[0] = 0x95;
// Anti-collision
transmit_bytes(abtSelectAll,2);
// Save the UID
memcpy(abtUid+4,abtRecv,4);
memcpy(abtSelectTag+2,abtRecv,5);
append_iso14443a_crc(abtSelectTag,7);
transmit_bytes(abtSelectTag,9);
uiUidLen = 7;
}
// Request ATS, this only applies to tags that support ISO 14443A-4
if (abtRecv[0] & 0x20)
{
transmit_bytes(abtRats,4);
}
// Done, halt the tag now
transmit_bytes(abtHalt,4);
printf("\nFound tag with UID: ");
if (uiUidLen == 4)
{
printf("%08x\n",swap_endian32(abtUid));
} else {
printf("%014llx\n",swap_endian64(abtUid)&0x00ffffffffffffffull);
}
return 0;
}

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/*
Public platform independent Near Field Communication (NFC) library
Copyright (C) 2009, Roel Verdult
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include "bitutils.h"
const static byte OddParity[256] = {
1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,
0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,
0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,
1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,
0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,
1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,
1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,
0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,
0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,
1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,
1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,
0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,
1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,
0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,
0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,
1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1
};
const static byte ByteMirror[256] = {
0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0, 0x10, 0x90, 0x50, 0xd0, 0x30,
0xb0, 0x70, 0xf0, 0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8, 0x18, 0x98,
0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8, 0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64,
0xe4, 0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4, 0x0c, 0x8c, 0x4c, 0xcc,
0x2c, 0xac, 0x6c, 0xec, 0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc, 0x02,
0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2, 0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2,
0x72, 0xf2, 0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea, 0x1a, 0x9a, 0x5a,
0xda, 0x3a, 0xba, 0x7a, 0xfa, 0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6,
0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6, 0x0e, 0x8e, 0x4e, 0xce, 0x2e,
0xae, 0x6e, 0xee, 0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe, 0x01, 0x81,
0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1, 0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71,
0xf1, 0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9, 0x19, 0x99, 0x59, 0xd9,
0x39, 0xb9, 0x79, 0xf9, 0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5, 0x15,
0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5, 0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad,
0x6d, 0xed, 0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd, 0x03, 0x83, 0x43,
0xc3, 0x23, 0xa3, 0x63, 0xe3, 0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3,
0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb, 0x1b, 0x9b, 0x5b, 0xdb, 0x3b,
0xbb, 0x7b, 0xfb, 0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7, 0x17, 0x97,
0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7, 0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f,
0xef, 0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff
};
byte oddparity(const byte bt)
{
return OddParity[bt];
}
void oddparity_bytes(const byte* pbtData, const ui32 uiLen, byte* pbtPar)
{
ui32 uiByteNr;
// Calculate the parity bits for the command
for (uiByteNr=0; uiByteNr<uiLen; uiByteNr++)
{
pbtPar[uiByteNr] = OddParity[pbtData[uiByteNr]];
}
}
byte mirror(byte bt)
{
return ByteMirror[bt];
}
ui32 mirror32(ui32 ui32Bits)
{
mirror_bytes((byte*)&ui32Bits,4);
return ui32Bits;
}
ui64 mirror64(ui64 ui64Bits)
{
mirror_bytes((byte*)&ui64Bits,8);
return ui64Bits;
}
void mirror_bytes(byte *pbts, ui32 uiLen)
{
ui32 btNr;
for (btNr=0; btNr<uiLen; btNr++)
{
*pbts = ByteMirror[*pbts];
pbts++;
}
}
ui32 swap_endian32(const void* pui32)
{
ui32 ui32N = *((ui32*)pui32);
return (((ui32N&0xFF)<<24)+((ui32N&0xFF00)<<8)+((ui32N&0xFF0000)>>8)+((ui32N&0xFF000000)>>24));
}
ui64 swap_endian64(const void* pui64)
{
ui64 ui64N = *((ui64*)pui64);
return (((ui64N&0xFF)<<56)+((ui64N&0xFF00)<<40)+((ui64N&0xFF0000)<<24)+((ui64N&0xFF000000)<<8)+((ui64N&0xFF00000000)>>8)+((ui64N&0xFF0000000000)>>24)+((ui64N&0xFF000000000000)>>40)+((ui64N&0xFF00000000000000)>>56));
}
void append_iso14443a_crc(byte* pbtData, ui32 uiLen)
{
byte bt;
ui32 wCrc = 0x6363;
do {
bt = *pbtData++;
bt = (bt^(byte)(wCrc & 0x00FF));
bt = (bt^(bt<<4));
wCrc = (wCrc >> 8)^((ui32)bt << 8)^((ui32)bt<<3)^((ui32)bt>>4);
} while (--uiLen);
*pbtData++ = (byte) (wCrc & 0xFF);
*pbtData = (byte) ((wCrc >> 8) & 0xFF);
}
void print_hex(const byte* pbtData, const ui32 uiLen)
{
ui32 uiPos;
for (uiPos=0; uiPos < uiLen; uiPos++)
{
printf("%02x ",pbtData[uiPos]);
}
printf("\n");
}
void print_hex_par(const byte* pbtData, const ui32 uiBits, const byte* pbtDataPar)
{
ui32 uiPos;
ui32 uiBytes = uiBits/8;
for (uiPos=0; uiPos < uiBytes; uiPos++)
{
printf("%02x",pbtData[uiPos]);
if (OddParity[pbtData[uiPos]] != pbtDataPar[uiPos])
{
printf("! ");
} else {
printf(" ");
}
}
// Print the rest bits, these cannot have no parity bit
if (uiBits%8 != 0)
{
printf("%02x",pbtData[uiBytes]);
}
printf("\n");
}

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/*
Public platform independent Near Field Communication (NFC) library
Copyright (C) 2009, Roel Verdult
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _LIBNFC_BITUTILS_H_
#define _LIBNFC_BITUTILS_H_
#include "defines.h"
#define INNER_XOR8(n) {\
n ^= (n >> 4); \
n ^= (n >> 2); \
n ^= (n >> 1); \
n &= 0x01; \
}
#define INNER_XOR32(n) {\
n ^= (n >> 16); \
n ^= (n >> 8); \
INNER_XOR8(n); \
}
#define INNER_XOR64(n) {\
n ^= (n >> 32); \
INNER_XOR32(n); \
}
byte oddparity(const byte bt);
void oddparity_bytes(const byte* pbtData, const ui32 uiLen, byte* pbtPar);
byte mirror(byte bt);
ui32 mirror32(ui32 ui32Bits);
ui64 mirror64(ui64 ui64Bits);
void mirror_bytes(byte *pbts, ui32 uiLen);
ui32 swap_endian32(const void* pui32);
ui64 swap_endian64(const void* pui64);
void append_iso14443a_crc(byte* pbtData, ui32 uiLen);
void print_hex(const byte* pbtData, const ui32 uiLen);
void print_hex_par(const byte* pbtData, const ui32 uiBits, const byte* pbtDataPar);
#endif // _LIBNFC_BITUTILS_H_

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/*
Public platform independent Near Field Communication (NFC) library
Copyright (C) 2009, Roel Verdult
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _LIBNFC_DEFINES_H_
#define _LIBNFC_DEFINES_H_
typedef unsigned char byte;
typedef unsigned char ui8;
typedef unsigned short ui16;
typedef unsigned int ui32;
typedef unsigned long long ui64;
typedef unsigned long ulong;
typedef char i8;
typedef short i16;
typedef int i32;
#define null 0
typedef void* dev_id; // Device Id
#define INVALID_DEVICE_ID null
#define MAX_FRAME_LEN 264
#define min(a,b) (((a) < (b)) ? (a) : (b))
#define max(a,b) (((a) > (b)) ? (a) : (b))
// #define _LIBNFC_VERBOSE_
#endif // _LIBNFC_DEFINES_H_

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/*
Public platform independent Near Field Communication (NFC) library
Copyright (C) 2009, Roel Verdult
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <string.h>
#include "libnfc.h"
#include "acr122.h"
#include "bitutils.h"
#define REG_CIU_TX_MODE 0x6302
#define REG_CIU_RX_MODE 0x6303
#define REG_CIU_TX_AUTO 0x6305
#define REG_CIU_MANUAL_RCV 0x630D
#define REG_CIU_CONTROL 0x633C
#define REG_CIU_BIT_FRAMING 0x633D
#define PARAM_NONE 0x00
#define PARAM_NAD_USED 0x01
#define PARAM_DID_USED 0x02
#define PARAM_AUTO_ATR_RES 0x04
#define PARAM_AUTO_RATS 0x10
#define PARAM_14443_4_PICC 0x20
#define PARAM_NO_AMBLE 0x40
// PN532 configuration
byte pncmd_get_firmware_version [ 2] = { 0xD4,0x02 };
byte pncmd_get_general_status [ 2] = { 0xD4,0x04 };
byte pncmd_get_register [ 4] = { 0xD4,0x06 };
byte pncmd_set_register [ 5] = { 0xD4,0x08 };
byte pncmd_set_parameters [ 3] = { 0xD4,0x12 };
// RF field configuration
byte pncmd_rf_configure_field [ 4] = { 0xD4,0x32,0x01 };
byte pncmd_rf_configure_timing [ 4] = { 0xD4,0x32,0x02 };
byte pncmd_rf_configure_retry_data [ 4] = { 0xD4,0x32,0x04 };
byte pncmd_rf_configure_retry_select [ 6] = { 0xD4,0x32,0x05 };
// Reader
byte pncmd_reader_list_passive [264] = { 0xD4,0x4A };
byte pncmd_reader_select [ 3] = { 0xD4,0x54 };
byte pncmd_reader_deselect [ 3] = { 0xD4,0x44 };
byte pncmd_reader_release [ 3] = { 0xD4,0x52 };
byte pncmd_reader_set_baud_rate [ 5] = { 0xD4,0x4E };
byte pncmd_reader_exchange_data [265] = { 0xD4,0x40 };
byte pncmd_reader_auto_poll [ 5] = { 0xD4,0x60 };
// Target
byte pncmd_target_get_data [ 2] = { 0xD4,0x86 };
byte pncmd_target_init [ 39] = { 0xD4,0x8C };
byte pncmd_target_virtual_card [ 4] = { 0xD4,0x14 };
byte pncmd_target_receive [ 2] = { 0xD4,0x88 };
byte pncmd_target_send [264] = { 0xD4,0x90 };
byte pncmd_target_get_status [ 2] = { 0xD4,0x8A };
// Exchange raw data frames
byte pncmd_exchange_raw_data [266] = { 0xD4,0x42 };
// Global buffers used for communication with the PN532 chip
#define MAX_FRAME_LEN 264
static byte abtRx[MAX_FRAME_LEN];
static ui32 uiRxLen;
static ui8 ui8Value;
static ui32 ui32Len = 1;
bool pn532_transceive(const dev_id di, const byte* pbtTx, const ui32 uiTxLen)
{
uiRxLen = MAX_FRAME_LEN;
return acr122_transceive(di,pbtTx,uiTxLen,abtRx,&uiRxLen);
}
bool pn532_set_reg(const dev_id di, ui16 ui16Reg, ui8 ui8Value)
{
pncmd_set_register[2] = ui16Reg >> 8;
pncmd_set_register[3] = ui16Reg & 0xff;
pncmd_set_register[4] = ui8Value;
return acr122_transceive(di,pncmd_set_register,5,null,null);
}
byte pn532_get_reg(const dev_id di, ui16 ui16Reg)
{
pncmd_get_register[2] = ui16Reg >> 8;
pncmd_get_register[3] = ui16Reg & 0xff;
acr122_transceive(di,pncmd_get_register,4,&ui8Value,&ui32Len);
return ui8Value;
}
bool pn532_set_parameters(const dev_id di, ui8 ui8Value)
{
pncmd_set_parameters[2] = ui8Value;
return acr122_transceive(di,pncmd_set_parameters,3,null,null);
}
bool pn532_wrap_frame(const byte* pbtTx, const ui32 uiTxBits, const byte* pbtTxPar, byte* pbtFrame, ui32* puiFrameBits)
{
byte btFrame;
byte btData;
ui32 uiBitPos;
ui32 uiDataPos = 0;
ui32 uiBitsLeft = uiTxBits;
// Make sure we should frame at least something
if (uiBitsLeft == 0) return false;
// Handle a short response (1byte) as a special case
if (uiBitsLeft < 9)
{
*pbtFrame = *pbtTx;
*puiFrameBits = uiTxBits;
return true;
}
// We start by calculating the frame length in bits
*puiFrameBits = uiTxBits + (uiTxBits/8);
// Parse the data bytes and add the parity bits
// This is really a sensitive process, mirror the frame bytes and append parity bits
// buffer = mirror(frame-byte) + parity + mirror(frame-byte) + parity + ...
// split "buffer" up in segments of 8 bits again and mirror them
// air-bytes = mirror(buffer-byte) + mirror(buffer-byte) + mirror(buffer-byte) + ..
while(true)
{
// Reset the temporary frame byte;
btFrame = 0;
for (uiBitPos=0; uiBitPos<8; uiBitPos++)
{
// Copy as much data that fits in the frame byte
btData = mirror(pbtTx[uiDataPos]);
btFrame |= (btData >> uiBitPos);
// Save this frame byte
*pbtFrame = mirror(btFrame);
// Set the remaining bits of the date in the new frame byte and append the parity bit
btFrame = (btData << (8-uiBitPos));
btFrame |= ((pbtTxPar[uiDataPos] & 0x01) << (7-uiBitPos));
// Backup the frame bits we have so far
pbtFrame++;
*pbtFrame = mirror(btFrame);
// Increase the data (without parity bit) position
uiDataPos++;
// Test if we are done
if (uiBitsLeft < 9) return true;
uiBitsLeft -= 8;
}
// Every 8 data bytes we lose one frame byte to the parities
pbtFrame++;
}
}
bool pn532_unwrap_frame(const byte* pbtFrame, const ui32 uiFrameBits, byte* pbtRx, ui32* puiRxBits, byte* pbtRxPar)
{
byte btFrame;
byte btData;
ui8 uiBitPos;
ui32 uiDataPos = 0;
byte* pbtFramePos = (byte*) pbtFrame;
ui32 uiBitsLeft = uiFrameBits;
// Make sure we should frame at least something
if (uiBitsLeft == 0) return false;
// Handle a short response (1byte) as a special case
if (uiBitsLeft < 9)
{
*pbtRx = *pbtFrame;
*puiRxBits = uiFrameBits;
return true;
}
// Calculate the data length in bits
*puiRxBits = uiFrameBits - (uiFrameBits/9);
// Parse the frame bytes, remove the parity bits and store them in the parity array
// This process is the reverse of WrapFrame(), look there for more info
while(true)
{
for (uiBitPos=0; uiBitPos<8; uiBitPos++)
{
btFrame = mirror(pbtFramePos[uiDataPos]);
btData = (btFrame << uiBitPos);
btFrame = mirror(pbtFramePos[uiDataPos+1]);
btData |= (btFrame >> (8-uiBitPos));
pbtRx[uiDataPos] = mirror(btData);
if(pbtRxPar != null) pbtRxPar[uiDataPos] = ((btFrame >> (7-uiBitPos)) & 0x01);
// Increase the data (without parity bit) position
uiDataPos++;
// Test if we are done
if (uiBitsLeft < 9) return true;
uiBitsLeft -= 9;
}
// Every 8 data bytes we lose one frame byte to the parities
pbtFramePos++;
}
}
bool nfc_configure_handle_crc(const dev_id di, const bool bEnable)
{
if (bEnable)
{
// Enable automatic receiving/sending of CRC bytes
if (!pn532_set_reg(di,REG_CIU_TX_MODE,pn532_get_reg(di,REG_CIU_TX_MODE) | 0x80)) return false;
if (!pn532_set_reg(di,REG_CIU_RX_MODE,pn532_get_reg(di,REG_CIU_RX_MODE) | 0x80)) return false;
} else {
// Disable automatic receiving/sending of CRC bytes
if (!pn532_set_reg(di,REG_CIU_TX_MODE,pn532_get_reg(di,REG_CIU_TX_MODE) & 0x7f)) return false;
if (!pn532_set_reg(di,REG_CIU_RX_MODE,pn532_get_reg(di,REG_CIU_RX_MODE) & 0x7f)) return false;
}
return true;
}
bool nfc_configure_handle_parity(const dev_id di, const bool bEnable)
{
if (bEnable)
{
// Handle parity by chip
if (!pn532_set_reg(di,REG_CIU_MANUAL_RCV,pn532_get_reg(di,REG_CIU_MANUAL_RCV) & 0xef)) return false;
} else {
// Parse parity as data bit
if (!pn532_set_reg(di,REG_CIU_MANUAL_RCV,pn532_get_reg(di,REG_CIU_MANUAL_RCV) | 0x10)) return false;
}
return true;
}
bool nfc_configure_field(const dev_id di, const bool bEnable)
{
pncmd_rf_configure_field[3] = (bEnable) ? 1 : 0;
return acr122_transceive(di,pncmd_rf_configure_field,4,null,null);
}
bool nfc_configure_list_passive_infinite(const dev_id di, const bool bEnable)
{
// Retry format: 0x00 means only 1 try, 0xff means infinite
pncmd_rf_configure_retry_select[3] = (bEnable) ? 0xff : 0x00; // MxRtyATR, default: active = 0xff, passive = 0x02
pncmd_rf_configure_retry_select[4] = (bEnable) ? 0xff : 0x00; // MxRtyPSL, default: 0x01
pncmd_rf_configure_retry_select[5] = (bEnable) ? 0xff : 0x00; // MxRtyPassiveActivation, default: 0xff
return acr122_transceive(di,pncmd_rf_configure_retry_select,6,null,null);
}
bool nfc_configure_accept_invalid_frames(const dev_id di, const bool bEnable)
{
if (bEnable)
{
// Handle parity by chip
if (!pn532_set_reg(di,REG_CIU_RX_MODE,pn532_get_reg(di,REG_CIU_RX_MODE) | 0x08)) return false;
} else {
// Parse parity as data bit
if (!pn532_set_reg(di,REG_CIU_RX_MODE,pn532_get_reg(di,REG_CIU_RX_MODE) | 0xf7)) return false;
}
return true;
}
bool nfc_configure_accept_multiple_frames(const dev_id di, const bool bEnable)
{
if (bEnable)
{
// Handle parity by chip
if (!pn532_set_reg(di,REG_CIU_RX_MODE,pn532_get_reg(di,REG_CIU_RX_MODE) | 0x04)) return false;
} else {
// Parse parity as data bit
if (!pn532_set_reg(di,REG_CIU_RX_MODE,pn532_get_reg(di,REG_CIU_RX_MODE) | 0xfb)) return false;
}
return true;
}
bool nfc_reader_init(const dev_id di)
{
// Try to connect to the NFC reader
if (di == INVALID_DEVICE_ID) return INVALID_DEVICE_ID;
// Let the PN5XX automatically be activated by the RF level detector
if (!pn532_set_reg(di,REG_CIU_TX_AUTO,pn532_get_reg(di,REG_CIU_TX_AUTO) | 0x40)) return false;
// Configure the PN532 to be an Initiator or Reader/Writer
if (!pn532_set_reg(di,REG_CIU_CONTROL,pn532_get_reg(di,REG_CIU_CONTROL) | 0x10)) return false;
return true;
}
bool nfc_reader_list_passive(const dev_id di, const ModulationType mt, const byte* pbtInitData, const ui32 uiInitDataLen, byte* pbtTag, ui32* puiTagLen)
{
pncmd_reader_list_passive[2] = 1; // MaxTg, we only want to select 1 tag at the time
pncmd_reader_list_passive[3] = mt; // BrTy, the type of modulation used for polling a passive tag
// Set the optional initiator data (used for Felica, ISO14443B, Topaz Polling or selecting a specific UID).
if (pbtInitData) memcpy(pncmd_reader_list_passive+4,pbtInitData,uiInitDataLen);
// Try to find the available tags
if (!acr122_transceive(di,pncmd_reader_list_passive,4+uiInitDataLen,pbtTag,puiTagLen)) return false;
// Return true only if at least one tag has been found, the PN532 returns 0x00 if none was available
return (pbtTag[0] != 0x00);
}
bool nfc_reader_transceive_7bits(const dev_id di, const byte btTx, byte* pbtRx, ui32* puiRxLen)
{
// Set transmission bits to 7
if (!pn532_set_reg(di,REG_CIU_BIT_FRAMING,7)) return false;
pncmd_exchange_raw_data[2] = btTx;
if (!pn532_transceive(di,pncmd_exchange_raw_data,3)) return false;
if (uiRxLen == 1 || abtRx[0] != 0) return false;
*puiRxLen = uiRxLen-1;
memcpy(pbtRx,abtRx+1,*puiRxLen);
// Reset transmission bits count
if (!pn532_set_reg(di,REG_CIU_BIT_FRAMING,0)) return false;
return true;
}
bool nfc_reader_transceive_bytes(const dev_id di, const byte* pbtTx, const ui32 uiTxLen, byte* pbtRx, ui32* puiRxLen)
{
memcpy(pncmd_exchange_raw_data+2,pbtTx,uiTxLen);
if (!pn532_transceive(di,pncmd_exchange_raw_data,2+uiTxLen)) return false;
if (uiRxLen == 1 || abtRx[0] != 0) return false;
*puiRxLen = uiRxLen-1;
memcpy(pbtRx,abtRx+1,*puiRxLen);
return true;
}
bool nfc_reader_transceive_bits(const dev_id di, const byte* pbtTx, const ui32 uiTxBits, const byte* pbtTxPar, byte* pbtRx, ui32* puiRxBits, byte* pbtRxPar)
{
ui32 uiFrameBits = 0;
ui8 ui8Bits = 0;
// Convert data to a frame
pn532_wrap_frame(pbtTx,uiTxBits,pbtTxPar,pncmd_exchange_raw_data+2,&uiFrameBits);
// Retrieve the resting bits
ui8Bits = uiFrameBits%8;
// Set the amount of transmission bits in the pn532 chip register
if (!pn532_set_reg(di,REG_CIU_BIT_FRAMING,ui8Bits)) return false;
// Send the frame to the pn532 chip and get the answer
// We have to give the amount of bytes + 1 byte if there are leading bits + the two 0xD4,0x42
if (!pn532_transceive(di,pncmd_exchange_raw_data,(uiFrameBits/8)+((ui8Bits==0)?0:1)+2)) return false;
// Make sure there was no failure reported by the PN532 chip (0 == OK)
// TODO: is this ACR122 specific?
if (uiRxLen == 1 || abtRx[0] != 0) return false;
// Get the last bit-count that is stored in the received byte
ui8Bits = pn532_get_reg(di,REG_CIU_CONTROL) & 0x07;
// Unwrap the response frame
pn532_unwrap_frame(abtRx+1,((uiRxLen-1-((ui8Bits==0)?0:1))*8)+ui8Bits,pbtRx,puiRxBits,pbtRxPar);
// Everything went successful
return true;
}
bool nfc_reader_mifare_cmd(const dev_id di, const MifareCmd mc, const ui8 ui8Block, MifareParam* pmp)
{
ui32 uiParamLen;
pncmd_reader_exchange_data[2] = 0x01; // Use first target/card
pncmd_reader_exchange_data[3] = mc; // The MIFARE Classic command
pncmd_reader_exchange_data[4] = ui8Block; // The block address (1K=0x00..0x39, 4K=0x00..0xff)
switch (mc)
{
// Read and store command have no parameter
case MC_READ:
case MC_STORE:
uiParamLen = 0;
break;
// Authenticate command
case MC_AUTH_A:
case MC_AUTH_B:
uiParamLen = sizeof(MifareParamAuth);
break;
// Data command
case MC_WRITE:
uiParamLen = sizeof(MifareParamData);
break;
// Value command
case MC_DECREMENT:
case MC_INCREMENT:
case MC_TRANSFER:
uiParamLen = sizeof(MifareParamValue);
break;
// Please fix your code, you never should reach this statement
default:
return false;
break;
}
// When available, copy the parameter bytes
if (uiParamLen) memcpy(pncmd_reader_exchange_data+5,(byte*)pmp,uiParamLen);
// Fire the mifare command
if (!pn532_transceive(di,pncmd_reader_exchange_data,5+uiParamLen)) return false;
// Make sure there was no failure reported by the PN532 chip (0 == OK)
// TODO: is this ACR122 specific?
if (abtRx[0] != 0) return false;
// When we have executed a read command, copy the received bytes into the param
if (mc == MC_READ) memcpy(pmp->mpd.abtData,abtRx+1,16);
// Command succesfully executed
return true;
}
bool nfc_target_init(const dev_id di, byte* pbtRx, ui32* puiRxLen)
{
// Clear the target init struct, reset to all zeros
memset(pncmd_target_init+2,0x00,37);
// Set ATQA (SENS_RES)
pncmd_target_init[3] = 0x04;
pncmd_target_init[4] = 0x00;
// Set SAK (SEL_RES)
pncmd_target_init[8] = 0x20;
// Set UID
pncmd_target_init[5] = 0x00;
pncmd_target_init[6] = 0xb0;
pncmd_target_init[7] = 0x0b;
// Enable CRC & parity, needed for target_init to work properly
nfc_configure_handle_crc(di,true);
nfc_configure_handle_parity(di,true);
// Request the initialization as a target
if (!pn532_transceive(di,pncmd_target_init,39)) return false;
if (uiRxLen == 1 || abtRx[0] != 0) return false;
*puiRxLen = uiRxLen-1;
memcpy(pbtRx,abtRx+1,*puiRxLen);
return true;
}
bool nfc_target_receive_bytes(const dev_id di, byte* pbtRx, ui32* puiRxLen)
{
if (!pn532_transceive(di,pncmd_target_receive,2)) return false;
if (uiRxLen == 1 || abtRx[0] != 0) return false;
*puiRxLen = uiRxLen-1;
memcpy(pbtRx,abtRx+1,*puiRxLen);
return true;
}
bool nfc_target_receive_bits(const dev_id di, byte* pbtRx, ui32* puiRxBits, byte* pbtRxPar)
{
ui8 ui8Bits;
// Try to gather the received frames from the reader
if (!pn532_transceive(di,pncmd_target_receive,2)) return false;
// Make sure there was no failure reported by the PN532 chip (0 == OK)
// TODO: is this ACR122 specific?
if (uiRxLen == 1 || abtRx[0] != 0) return false;
// Get the last bit-count that is stored in the received byte
ui8Bits = pn532_get_reg(di,REG_CIU_CONTROL) & 0x07;
// Unwrap the response frame
pn532_unwrap_frame(abtRx+1,((uiRxLen-1-((ui8Bits==0)?0:1))*8)+ui8Bits,pbtRx,puiRxBits,pbtRxPar);
return true;
}
bool nfc_target_send_bytes(const dev_id di, const byte* pbtTx, const ui32 uiTxLen)
{
memcpy(pncmd_target_send+2,pbtTx,uiTxLen);
return acr122_transceive(di,pncmd_target_send,2+uiTxLen,null,null);
}
bool nfc_target_send_bits(const dev_id di, const byte* pbtTx, const ui32 uiTxBits, const byte* pbtTxPar)
{
ui32 uiFrameBits = 0;
ui8 ui8Bits = 0;
// Convert data to a frame
pn532_wrap_frame(pbtTx,uiTxBits,pbtTxPar,pncmd_target_send+2,&uiFrameBits);
// Retrieve the resting bits
ui8Bits = uiFrameBits%8;
// Set the amount of transmission bits in the pn532 chip register
if (!pn532_set_reg(di,REG_CIU_BIT_FRAMING,ui8Bits)) return false;
// Try to send the bits to the reader
if (!pn532_transceive(di,pncmd_target_send,(uiFrameBits/8)+((ui8Bits==0)?0:1)+2)) return false;
// Make sure there was no failure reported by the PN532 chip (0 == OK)
// TODO: is this ACR122 specific?
if (uiRxLen == 1 || abtRx[0] != 0) return false;
// Everyting seems ok, return true
return true;
}

50
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/*
Public platform independent Near Field Communication (NFC) library
Copyright (C) 2009, Roel Verdult
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _LIBNFC_H_
#define _LIBNFC_H_
#include "defines.h"
#include "types.h"
#include "bitutils.h"
#include "acr122.h"
bool nfc_configure_handle_crc(const dev_id di, const bool bEnable);
bool nfc_configure_handle_parity(const dev_id di, const bool bEnable);
bool nfc_configure_field(const dev_id di, const bool bEnable);
bool nfc_configure_list_passive_infinite(const dev_id di, const bool bEnable);
bool nfc_configure_accept_invalid_frames(const dev_id di, const bool bEnable);
bool nfc_configure_accept_multiple_frames(const dev_id di, const bool bEnable);
bool nfc_reader_init(const dev_id di);
bool nfc_reader_list_passive(const dev_id di, const ModulationType mt, const byte* pbtInitData, const ui32 uiInitDataLen, byte* pbtTag, ui32* puiTagLen);
bool nfc_reader_transceive_7bits(const dev_id di, const byte btTx, byte* pbtRx, ui32* puiRxLen);
bool nfc_reader_transceive_bytes(const dev_id di, const byte* pbtTx, const ui32 uiTxLen, byte* pbtRx, ui32* puiRxLen);
bool nfc_reader_transceive_bits(const dev_id di, const byte* pbtTx, const ui32 uiTxBits, const byte* pbtTxPar, byte* pbtRx, ui32* puiRxBits, byte* pbtRxPar);
bool nfc_reader_mifare_cmd(const dev_id di, const MifareCmd mc, const ui8 ui8Block, MifareParam* pmp);
bool nfc_target_init(const dev_id di, byte* pbtRx, ui32* puiRxLen);
bool nfc_target_receive_bytes(const dev_id di, byte* pbtRx, ui32* puiRxLen);
bool nfc_target_receive_bits(const dev_id di, byte* pbtRx, ui32* puiRxBits, byte* pbtRxPar);
bool nfc_target_send_bytes(const dev_id di, const byte* pbtTx, const ui32 uiTxLen);
bool nfc_target_send_bits(const dev_id di, const byte* pbtTx, const ui32 uiTxBits, const byte* pbtTxPar);
#endif // _LIBNFC_H_

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/*
Public platform independent Near Field Communication (NFC) library
Copyright (C) 2009, Roel Verdult
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "libnfc.h"
static byte abtRecv[MAX_FRAME_LEN];
static ui32 uiRecvLen;
static dev_id di;
int main(int argc, const char* argv[])
{
// Try to open the NFC reader
di = acr122_connect(0);
if (di == INVALID_DEVICE_ID)
{
printf("Error connecting NFC reader\n");
return 1;
}
nfc_reader_init(di);
// Let the reader only try once to find a tag
nfc_configure_list_passive_infinite(di,false);
// Drop the field so the tag will be reset
nfc_configure_field(di,false);
// Configure the communication channel
nfc_configure_handle_crc(di,true);
nfc_configure_handle_parity(di,true);
printf("\nConnected to NFC reader\n\n");
uiRecvLen = MAX_FRAME_LEN;
if (nfc_reader_list_passive(di,MT_ISO14443A_106,null,null,abtRecv,&uiRecvLen))
{
// ISO14443A tag info = ( tag_count[1], tag_nr[1], ATQA[2], SAK[1], uid_len[1], UID[uid_len], ats_len[1], ATS[ats_len-1] )
// ATS is optional
printf("The following (NFC) ISO14443A tag was found:\n\n");
printf("%17s","ATQA (SENS_RES): ");
print_hex(abtRecv+2,2);
printf("%17s","UID (NFCID1): ");
print_hex(abtRecv+6,abtRecv[5]);
printf("%17s","SAK (SEL_RES): ");
print_hex(abtRecv+4,1);
if (uiRecvLen > 6+(ui32)abtRecv[5])
{
printf("%17s","ATS (ATR): ");
print_hex(abtRecv+6+abtRecv[5]+1,abtRecv[6+abtRecv[5]]-1);
}
} else {
printf("Error: no tag was found\n");
}
// Todo: listing the folllowing tags types
//
// MT_FELICA_212
// MT_FELICA_424
// MT_ISO14443B_106
// MT_TOPAZ_106
return 0;
}

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/*
Public platform independent Near Field Communication (NFC) library
Copyright (C) 2009, Roel Verdult
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "libnfc.h"
#include "mifaretag.h"
static byte abtRecv[MAX_FRAME_LEN];
static ui32 uiRecvLen;
static dev_id di;
static MifareParam mp;
static MifareTag mtKeys;
static MifareTag mtDump;
bool is_trailer_block(ui32 uiBlock)
{
// Test if we are in the small or big sectors
if (uiBlock < 128) return ((uiBlock+1)%4 == 0); else return ((uiBlock+1)%16 == 0);
}
ui32 get_trailer_block(ui32 uiSector)
{
// Test if we are in the small or big sectors
if (uiSector<32)
{
return (uiSector*4)+3;
} else {
return 128+((uiSector-32)*16)+15;
}
}
int main(int argc, const char* argv[])
{
bool b4K;
bool bKeyA;
byte* pbtUID;
bool bFailure;
i32 iBlock;
ui32 uiBlocks;
FILE* pfKeys;
FILE* pfDump;
MifareCmd mc;
if (argc < 4)
{
printf("mfread <a|b> <keys.mfd> <dump.mfd>\n");
printf("\n");
return 1;
}
bKeyA = (*(argv[1]) == 'a');
pfKeys = fopen(argv[2],"rb");
if (pfKeys == null)
{
printf("Could not open file: %s\n",argv[2]);
return 1;
}
fread(&mtKeys,1,sizeof(mtKeys),pfKeys);
fclose(pfKeys);
pfDump = fopen(argv[3],"wb");
if (pfKeys == null)
{
printf("Could not open file: %s\n",argv[3]);
return 1;
}
memset(&mtDump,0x00,sizeof(mtDump));
printf("Succesful opened MIFARE dump files\n");
// Try to open the NFC reader
di = acr122_connect(0);
if (di == INVALID_DEVICE_ID)
{
printf("Error connecting NFC reader\n");
return 1;
}
nfc_reader_init(di);
// Let the reader only try once to find a tag
nfc_configure_list_passive_infinite(di,false);
// Drop the field so the tag will be reset
nfc_configure_field(di,false);
// Configure the communication channel
nfc_configure_handle_crc(di,true);
nfc_configure_handle_parity(di,true);
printf("Connected to NFC reader\n");
// MIFARE Classic tag info = ( tag_count[1], tag_nr[1], ATQA[2], SAK[1], uid_len[1], UID[uid_len] )
uiRecvLen = MAX_FRAME_LEN;
if (!nfc_reader_list_passive(di,MT_ISO14443A_106,null,null,abtRecv,&uiRecvLen))
{
printf("Error: no tag was found\n");
return 1;
}
// Test if we are dealing with a MIFARE compatible tag
if ((abtRecv[4] & 0x08) == 0)
{
printf("Error: tag is not a MIFARE Classic card\n");
return 1;
}
// Get the info from the key dump
b4K = (mtKeys.blContent[0].bm.abtATQA[0] == 0x02);
pbtUID = mtKeys.blContent[0].bm.abtUID;
// Compare if key dump UID is the same as the current tag UID
if (memcmp(abtRecv+6,pbtUID,4) != 0)
{
printf("Expected MIFARE Classic %cK card with uid: %08x\n",b4K?'4':'1',swap_endian32(pbtUID));
}
// Get the info from the current tag
pbtUID = abtRecv+6;
b4K = (abtRecv[3] == 0x02);
printf("Found MIFARE Classic %cK card with uid: %08x\n",b4K?'4':'1',swap_endian32(pbtUID));
uiBlocks = (b4K)?0xff:0x3f;
bFailure = false;
printf("Reading out %d blocks |",uiBlocks+1);
// Read the card from end to begin
for (iBlock=uiBlocks; iBlock>=0; iBlock--)
{
// Authenticate everytime we reach a trailer block
if (is_trailer_block(iBlock))
{
// Show if the readout went well
if (bFailure)
{
printf("x");
// When a failure occured we need to redo the anti-collision
if (!nfc_reader_list_passive(di,MT_ISO14443A_106,null,null,abtRecv,&uiRecvLen))
{
printf("!\nError: tag was removed\n");
return 1;
}
bFailure = false;
} else {
// Skip this the first time, bFailure it means nothing (yet)
if (iBlock != uiBlocks)
{
printf(".");
}
}
fflush(stdout);
// Set the authentication information (uid)
memcpy(mp.mpa.abtUid,abtRecv+6,4);
// Determin if we should use the a or the b key
if (bKeyA)
{
mc = MC_AUTH_A;
memcpy(mp.mpa.abtKey,mtKeys.blContent[iBlock].bt.abtKeyA,6);
} else {
mc = MC_AUTH_B;
memcpy(mp.mpa.abtKey,mtKeys.blContent[iBlock].bt.abtKeyB,6);
}
// Try to authenticate for the current sector
if (!nfc_reader_mifare_cmd(di,MC_AUTH_A,iBlock,&mp))
{
printf("!\nError: authentication failed for block %02x\n",iBlock);
return 1;
}
// Try to read out the trailer
if (nfc_reader_mifare_cmd(di,MC_READ,iBlock,&mp))
{
// Copy the keys over from our key dump and store the retrieved access bits
memcpy(mtDump.blContent[iBlock].bd.abtContent,mtKeys.blContent[iBlock].bt.abtKeyA,6);
memcpy(mtDump.blContent[iBlock].bt.abtAccessBits,mp.mpd.abtData+6,4);
memcpy(mtDump.blContent[iBlock].bd.abtContent+10,mtKeys.blContent[iBlock].bt.abtKeyB,6);
}
} else {
// Make sure a earlier readout did not fail
if (!bFailure)
{
// Try to read out the data block
if (nfc_reader_mifare_cmd(di,MC_READ,iBlock,&mp))
{
memcpy(mtDump.blContent[iBlock].bd.abtContent,mp.mpd.abtData,16);
} else {
bFailure = true;
}
}
}
}
printf("%c|\n",(bFailure)?'x':'.');
fflush(stdout);
printf("Writing dump to file: %s\n",argv[3]);
fflush(stdout);
fwrite(&mtDump,1,sizeof(mtDump),pfDump);
fclose(pfKeys);
printf("Done, all data is dumped!\n");
return 0;
}

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/*
Public platform independent Near Field Communication (NFC) library
Copyright (C) 2009, Roel Verdult
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "libnfc.h"
#include "mifaretag.h"
static byte abtRecv[MAX_FRAME_LEN];
static ui32 uiRecvLen;
static dev_id di;
static MifareParam mp;
static MifareTag mtKeys;
static MifareTag mtDump;
bool is_first_block(ui32 uiBlock)
{
// Test if we are in the small or big sectors
if (uiBlock < 128) return ((uiBlock)%4 == 0); else return ((uiBlock)%16 == 0);
}
bool is_trailer_block(ui32 uiBlock)
{
// Test if we are in the small or big sectors
if (uiBlock < 128) return ((uiBlock+1)%4 == 0); else return ((uiBlock+1)%16 == 0);
}
ui32 get_trailer_block(ui32 uiFirstBlock)
{
// Test if we are in the small or big sectors
if (uiFirstBlock<128) return uiFirstBlock+3; else return uiFirstBlock+15;
}
int main(int argc, const char* argv[])
{
bool b4K;
bool bKeyA;
byte* pbtUID;
bool bFailure;
ui32 uiBlock;
ui32 uiBlocks;
ui32 uiTrailerBlock;
FILE* pfKeys;
FILE* pfDump;
MifareCmd mc;
if (argc < 4)
{
printf("mfwrite <a|b> <keys.mfd> <dump.mfd>\n");
printf("\n");
return 1;
}
bKeyA = (*(argv[1]) == 'a');
pfKeys = fopen(argv[2],"rb");
if (pfKeys == null)
{
printf("Could not open file: %s\n",argv[2]);
return 1;
}
fread(&mtKeys,1,sizeof(mtKeys),pfKeys);
fclose(pfKeys);
pfDump = fopen(argv[3],"rb");
if (pfKeys == null)
{
printf("Could not open file: %s\n",argv[3]);
return 1;
}
fread(&mtDump,1,sizeof(mtDump),pfDump);
fclose(pfDump);
printf("Succesful opened MIFARE dump files\n");
// Try to open the NFC reader
di = acr122_connect(0);
if (di == INVALID_DEVICE_ID)
{
printf("Error connecting NFC reader\n");
return 1;
}
nfc_reader_init(di);
// Let the reader only try once to find a tag
nfc_configure_list_passive_infinite(di,false);
// Drop the field so the tag will be reset
nfc_configure_field(di,false);
// Configure the communication channel
nfc_configure_handle_crc(di,true);
nfc_configure_handle_parity(di,true);
printf("Connected to NFC reader\n");
// MIFARE Classic tag info = ( tag_count[1], tag_nr[1], ATQA[2], SAK[1], uid_len[1], UID[uid_len] )
uiRecvLen = MAX_FRAME_LEN;
if (!nfc_reader_list_passive(di,MT_ISO14443A_106,null,null,abtRecv,&uiRecvLen))
{
printf("Error: no tag was found\n");
return 1;
}
// Test if we are dealing with a MIFARE compatible tag
if ((abtRecv[4] & 0x08) == 0)
{
printf("Error: tag is not a MIFARE Classic card\n");
return 1;
}
// Get the info from the key dump
b4K = (mtKeys.blContent[0].bm.abtATQA[0] == 0x02);
pbtUID = mtKeys.blContent[0].bm.abtUID;
// Compare if key dump UID is the same as the current tag UID
if (memcmp(abtRecv+6,pbtUID,4) != 0)
{
printf("Expected MIFARE Classic %cK card with uid: %08x\n",b4K?'4':'1',swap_endian32(pbtUID));
}
// Get the info from the current tag
pbtUID = abtRecv+6;
b4K = (abtRecv[3] == 0x02);
printf("Found MIFARE Classic %cK card with uid: %08x\n",b4K?'4':'1',swap_endian32(pbtUID));
uiBlocks = (b4K)?0xff:0x3f;
bFailure = false;
printf("Writing %d blocks |",uiBlocks+1);
// Write the card from begin to end;
for (uiBlock=0; uiBlock<=uiBlocks; uiBlock++)
{
// Authenticate everytime we reach the first sector of a new block
if (is_first_block(uiBlock))
{
// Show if the readout went well
if (bFailure)
{
printf("x");
// When a failure occured we need to redo the anti-collision
if (!nfc_reader_list_passive(di,MT_ISO14443A_106,null,null,abtRecv,&uiRecvLen))
{
printf("!\nError: tag was removed\n");
return 1;
}
bFailure = false;
} else {
// Skip this the first time, bFailure it means nothing (yet)
if (uiBlock != 0)
{
printf(".");
}
}
fflush(stdout);
// Locate the trailer (with the keys) used for this sector
uiTrailerBlock = get_trailer_block(uiBlock);
// Set the authentication information (uid)
memcpy(mp.mpa.abtUid,abtRecv+6,4);
// Determin if we should use the a or the b key
if (bKeyA)
{
mc = MC_AUTH_A;
memcpy(mp.mpa.abtKey,mtKeys.blContent[uiTrailerBlock].bt.abtKeyA,6);
} else {
mc = MC_AUTH_B;
memcpy(mp.mpa.abtKey,mtKeys.blContent[uiTrailerBlock].bt.abtKeyB,6);
}
// Try to authenticate for the current sector
if (!nfc_reader_mifare_cmd(di,mc,uiBlock,&mp))
{
printf("!\nError: authentication failed for block %02x\n",uiBlock);
return 1;
}
}
if (is_trailer_block(uiBlock))
{
// Copy the keys over from our key dump and store the retrieved access bits
memcpy(mp.mpd.abtData,mtDump.blContent[uiBlock].bt.abtKeyA,6);
memcpy(mp.mpd.abtData+6,mtDump.blContent[uiBlock].bt.abtAccessBits,4);
memcpy(mp.mpd.abtData+10,mtDump.blContent[uiBlock].bt.abtKeyB,6);
// Try to write the trailer
nfc_reader_mifare_cmd(di,MC_WRITE,uiBlock,&mp);
} else {
// The first block 0x00 is read only, skip this
if (uiBlock == 0) continue;
// Make sure a earlier write did not fail
if (!bFailure)
{
// Try to write the data block
memcpy(mp.mpd.abtData,mtDump.blContent[uiBlock].bd.abtContent,16);
if (!nfc_reader_mifare_cmd(di,MC_WRITE,uiBlock,&mp))
{
bFailure = true;
}
}
}
}
printf("%c|\n",(bFailure)?'x':'.');
fflush(stdout);
printf("Done, all data is written!\n");
return 0;
}

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/*
Public platform independent Near Field Communication (NFC) library
Copyright (C) 2009, Roel Verdult
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _MIFARE_TAG_H_
#define _MIFARE_TAG_H_
#include "defines.h"
typedef struct tagBlockManufacturer {
byte abtUID[4];
byte btBCC;
byte btUnknown;
byte abtATQA[2];
byte abtUnknown[8];
} BlockManufacturer;
typedef struct tagBlockData {
byte abtContent[16];
} BlockData;
typedef struct tagBlockTrailer {
byte abtKeyA[6];
byte abtAccessBits[4];
byte abtKeyB[6];
} BlockTrailer;
typedef union tagBlock {
BlockManufacturer bm;
BlockData bd;
BlockTrailer bt;
} Block;
typedef struct tagMifareTag {
Block blContent[256];
} MifareTag;
#endif // _MIFARE_TAG_H_

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/*
Public platform independent Near Field Communication (NFC) library
Copyright (C) 2009, Roel Verdult
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "libnfc.h"
static byte abtReaderRecv[MAX_FRAME_LEN];
static byte abtReaderRecvPar[MAX_FRAME_LEN];
static ui32 uiReaderRecvBits;
static byte abtTagRecv[MAX_FRAME_LEN];
static byte abtTagRecvPar[MAX_FRAME_LEN];
static ui32 uiTagRecvBits;
static dev_id diReader;
static dev_id diTag;
int main(int argc, const char* argv[])
{
// Try to open the NFC reader
diReader = acr122_connect(0);
if (diReader == INVALID_DEVICE_ID)
{
printf("Error connecting first NFC reader\n");
return 1;
}
diTag = acr122_connect(1);
if (diTag == INVALID_DEVICE_ID)
{
printf("Error connecting second NFC reader\n");
return 1;
}
printf("\n");
printf("[+] Connected to the both NFC readers\n");
acr122_led_red(diTag,true);
printf("[+] Identified simulated tag by setting the red light\n");
printf("[+] Place both readers on top of each other\n");
printf("[+] Please run 'anticol' tool in a different shell\n");
nfc_target_init(diTag,abtReaderRecv,&uiReaderRecvBits);
nfc_configure_handle_crc(diTag,false);
nfc_configure_handle_parity(diTag,false);
nfc_configure_accept_invalid_frames(diTag,true);
printf("[+] Thank you, the simulated tag is initialized\n");
printf("[+] Attaching to first NFC reader \n");
// Retry until it becomes ready
while (!nfc_reader_init(diReader))
{
acr122_disconnect(diReader);
printf("error\n");
diReader = acr122_connect(0);
}
nfc_configure_handle_crc(diReader,false);
nfc_configure_handle_parity(diReader,false);
nfc_configure_accept_invalid_frames(diReader,true);
printf("[+] Done, relaying frames now!\n\n");
while(true)
{
// Test if we received a frame from the reader
if (nfc_target_receive_bits(diTag,abtReaderRecv,&uiReaderRecvBits,abtReaderRecvPar))
{
// Drop down the field before sending a REQA command and start a new session
if (uiReaderRecvBits == 7 && abtReaderRecv[0] == 0x26)
{
// Drop down field for a very short time (tag will reboot)
nfc_configure_field(diReader,false);
printf("\n");
nfc_configure_field(diReader,true);
}
// Print the reader frame to the screen
printf("R: ");
print_hex_par(abtReaderRecv,uiReaderRecvBits,abtReaderRecvPar);
// Forward the frame to the original tag
if (nfc_reader_transceive_bits(diReader,abtReaderRecv,uiReaderRecvBits,abtReaderRecvPar,abtTagRecv,&uiTagRecvBits,abtTagRecvPar))
{
// Redirect the answer back to the reader
nfc_target_send_bits(diTag,abtTagRecv,uiTagRecvBits,abtTagRecvPar);
// Print the tag frame to the screen
printf("T: ");
print_hex_par(abtTagRecv,uiTagRecvBits,abtTagRecvPar);
}
}
}
}

108
simulate.c Normal file
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/*
Public platform independent Near Field Communication (NFC) library
Copyright (C) 2009, Roel Verdult
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "libnfc.h"
static byte abtRecv[MAX_FRAME_LEN];
static ui32 uiRecvLen;
static dev_id di;
// ISO14443A Anti-Collision response
byte abtAtqa [2] = { 0x04,0x00 };
byte abtUidBcc [5] = { 0xDE,0xAD,0xBE,0xAF,0x62 };
byte abtSak [9] = { 0x08,0xb6,0xdd };
int main(int argc, const char* argv[])
{
byte* pbtTx;
ui32 uiTxLen;
// Try to open the NFC reader
di = acr122_connect(0);
if (di == INVALID_DEVICE_ID)
{
printf("Error connecting NFC reader\n");
return 1;
}
printf("\n");
printf("[+] Connected to NFC target\n");
acr122_led_red(di,true);
printf("[+] Identified simulated tag by setting the red light\n");
printf("[+] First we have to come out auto-simulation\n");
printf("[+] To do this, please send any command after the\n");
printf("[+] anti-collision, for example, the RATS command\n\n");
nfc_target_init(di,abtRecv,&uiRecvLen);
printf("[+] Initiator command: ");
print_hex(abtRecv,uiRecvLen);
printf("[+] Configuring communication");
nfc_configure_accept_invalid_frames(di,true);
nfc_configure_handle_crc(di,false);
printf("[+] Done, the simulated tag is initialized \n");
while(true)
{
// Test if we received a frame
if (nfc_target_receive_bytes(di,abtRecv,&uiRecvLen))
{
// Prepare the command to send back for the anti-collision request
switch(uiRecvLen)
{
case 1: // Request or Wakeup
pbtTx = abtAtqa;
uiTxLen = 2;
// New anti-collsion session started
printf("\n");
break;
case 2: // Select All
pbtTx = abtUidBcc;
uiTxLen = 5;
break;
case 9: // Select Tag
pbtTx = abtSak;
uiTxLen = 3;
break;
default: // unknown length?
uiTxLen = 0;
break;
}
printf("R: ");
print_hex(abtRecv,uiRecvLen);
// Test if we know how to respond
if(uiTxLen)
{
// Send and print the command to the screen
nfc_target_send_bytes(di,pbtTx,uiTxLen);
printf("T: ");
print_hex(pbtTx,uiTxLen);
}
}
}
}

69
types.h Normal file
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/*
Public platform independent Near Field Communication (NFC) library
Copyright (C) 2009, Roel Verdult
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _LIBNFC_TYPES_H_
#define _LIBNFC_TYPES_H_
#include "defines.h"
typedef enum {
false = 0x00,
true = 0x01
}bool;
typedef enum {
MT_ISO14443A_106 = 0x00,
MT_FELICA_212 = 0x01,
MT_FELICA_424 = 0x02,
MT_ISO14443B_106 = 0x03,
MT_TOPAZ_106 = 0x04,
}ModulationType;
typedef enum {
MC_AUTH_A = 0x60,
MC_AUTH_B = 0x61,
MC_READ = 0x30,
MC_WRITE = 0xA0,
MC_TRANSFER = 0xB0,
MC_DECREMENT = 0xC0,
MC_INCREMENT = 0xC1,
MC_STORE = 0xC2,
}MifareCmd;
typedef struct {
byte abtKey[6];
byte abtUid[4];
}MifareParamAuth;
typedef struct {
byte abtData[16];
}MifareParamData;
typedef struct {
byte abtValue[4];
}MifareParamValue;
typedef union {
MifareParamAuth mpa;
MifareParamData mpd;
MifareParamValue mpv;
}MifareParam;
#endif // _LIBNFC_TYPES_H_

BIN
win32/WINSCARD.LIB Normal file
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Binary file not shown.

184
win32/anticol.vcproj Normal file
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TargetMachine="1"
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<Tool
Name="VCPostBuildEventTool"
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OutputDirectory="$(SolutionDir)$(ConfigurationName)"
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<Tool
Name="VCXMLDataGeneratorTool"
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<Tool
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<Tool
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<Tool
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UsePrecompiledHeader="0"
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<Tool
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<File
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41
win32/libnfc.def Normal file
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EXPORTS
; acr122.c
acr122_connect
acr122_disconnect
acr122_transceive
acr122_firmware
acr122_led_red
; libnfc.c
nfc_configure_handle_crc
nfc_configure_handle_parity
nfc_configure_field
nfc_configure_list_passive_infinite
nfc_configure_accept_invalid_frames
nfc_configure_accept_multiple_frames
nfc_reader_init
nfc_reader_transceive_7bits
nfc_reader_transceive_bytes
nfc_reader_transceive_bits
nfc_reader_list_passive
nfc_reader_mifare_cmd
nfc_target_init
nfc_target_receive_bytes
nfc_target_receive_bits
nfc_target_send_bytes
nfc_target_send_bits
; bitutils.c
oddparity
oddparity_bytes
mirror
mirror32
mirror64
mirror_bytes
swap_endian32
swap_endian64
append_iso14443a_crc
print_hex
print_hex_par

74
win32/libnfc.sln Normal file
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@ -0,0 +1,74 @@

Microsoft Visual Studio Solution File, Format Version 9.00
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217
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<?xml version="1.0" encoding="Windows-1252"?>
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