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RRG-Proxmark3/armsrc/mifaredesfire.c
iceman1001 c002ae9f77 style
2024-10-06 10:08:17 +02:00

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//-----------------------------------------------------------------------------
// Copyright (C) Proxmark3 contributors. See AUTHORS.md for details.
//
// 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.
//
// See LICENSE.txt for the text of the license.
//-----------------------------------------------------------------------------
#include "mifaredesfire.h"
#include "common.h"
#include "proxmark3_arm.h"
#include "string.h"
#include "BigBuf.h"
#include "mifareutil.h"
#include "desfire_crypto.h"
#include "cmd.h"
#include "dbprint.h"
#include "fpgaloader.h"
#include "iso14443a.h"
#include "crc16.h"
#include "commonutil.h"
#include "util.h"
#include "mifare.h"
#include "ticks.h"
#include "protocols.h"
#define MAX_APPLICATION_COUNT 28
#define MAX_FILE_COUNT 16
#define MAX_DESFIRE_FRAME_SIZE 60
#define NOT_YET_AUTHENTICATED 255
#define FRAME_PAYLOAD_SIZE (MAX_DESFIRE_FRAME_SIZE - 5)
#define RECEIVE_SIZE 64
// the block number for the ISO14443-4 PCB
static uint8_t pcb_blocknum = 0;
// Deselect card by sending a s-block. the crc is precalced for speed
static uint8_t deselect_cmd[] = {0xc2, 0xe0, 0xb4};
//static uint8_t __msg[MAX_FRAME_SIZE] = { 0x0A, 0x00, 0x00, /* ..., */ 0x00 };
/* PCB CID CMD PAYLOAD */
//static uint8_t __res[MAX_FRAME_SIZE];
static struct desfire_key skey = {0};
static desfirekey_t sessionkey = &skey;
bool InitDesfireCard(void) {
pcb_blocknum = 0;
iso14a_card_select_t card;
iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
set_tracing(true);
if (!iso14443a_select_card(NULL, &card, NULL, true, 0, false)) {
if (g_dbglevel >= DBG_ERROR) DbpString("Can't select card");
OnError(1);
return false;
}
return true;
}
typedef struct {
uint8_t len;
uint8_t data[RECEIVE_SIZE];
} cmdres_t;
void MifareSendCommand(uint8_t *datain) {
struct p {
uint8_t flags;
uint8_t datalen;
uint8_t datain[FRAME_PAYLOAD_SIZE];
} PACKED;
struct p *payload = (struct p *) datain;
uint8_t resp[RECEIVE_SIZE];
memset(resp, 0, sizeof(resp));
if (g_dbglevel >= DBG_EXTENDED) {
Dbprintf(" flags : %02X", payload->flags);
Dbprintf(" len : %02X", payload->datalen);
print_result(" RX : ", payload->datain, payload->datalen);
}
if (payload->flags & CLEARTRACE)
clear_trace();
if (payload->flags & INIT) {
if (!InitDesfireCard()) {
return;
}
}
int len = DesfireAPDU(payload->datain, payload->datalen, resp);
if (g_dbglevel >= DBG_EXTENDED)
print_result("RESP <--: ", resp, len);
if (!len) {
OnError(2);
return;
}
if (payload->flags & DISCONNECT)
OnSuccess();
//reply_mix(CMD_ACK, 1, len, 0, resp, len);
LED_B_ON();
cmdres_t rpayload;
rpayload.len = len;
memcpy(rpayload.data, resp, rpayload.len);
reply_ng(CMD_HF_DESFIRE_COMMAND, PM3_SUCCESS, (uint8_t *)&rpayload, sizeof(rpayload));
LED_B_OFF();
}
void MifareDesfireGetInformation(void) {
LEDsoff();
int len = 0;
iso14a_card_select_t card;
uint8_t resp[PM3_CMD_DATA_SIZE] = {0x00};
struct p {
uint8_t isOK;
uint8_t uid[7];
uint8_t uidlen;
uint8_t versionHW[7];
uint8_t versionSW[7];
uint8_t details[14];
} PACKED payload;
memset(&payload, 0x00, sizeof(payload));
/*
1 = PCB 1
2 = cid 2
3 = desfire command 3
4-5 = crc 4 key
5-6 crc
PCB == 0x0A because sending CID byte.
CID == 0x00 first card?
*/
clear_trace();
set_tracing(true);
iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
// reset the pcb_blocknum,
pcb_blocknum = 0;
// card select - information
if (!iso14443a_select_card(NULL, &card, NULL, true, 0, false)) {
if (g_dbglevel >= DBG_ERROR) {
DbpString("Can't select card");
}
payload.isOK = 1; // 2 == can not select
reply_ng(CMD_HF_DESFIRE_INFO, PM3_ESOFT, (uint8_t *)&payload, sizeof(payload));
switch_off();
return;
}
// add uid.
memcpy(payload.uid, card.uid, card.uidlen);
payload.uidlen = card.uidlen;
LED_A_ON();
uint8_t cmd[] = {0x90, MFDES_GET_VERSION, 0x00, 0x00, 0x00};
size_t cmd_len = sizeof(cmd);
len = DesfireAPDU(cmd, cmd_len, resp);
if (!len) {
print_result("ERROR <--: ", resp, len);
payload.isOK = 3; // 3 == DOESN'T ANSWER TO GET_VERSION
reply_ng(CMD_HF_DESFIRE_INFO, PM3_ESOFT, (uint8_t *)&payload, sizeof(payload));
switch_off();
return;
}
if (len < sizeof(payload.versionHW) + 1) {
payload.isOK = 3; // 3 == DOESN'T ANSWER TO GET_VERSION
reply_ng(CMD_HF_DESFIRE_INFO, PM3_ESOFT, (uint8_t *)&payload, sizeof(payload));
switch_off();
if (g_dbglevel >= DBG_ERROR) {
Dbprintf("Tag answer to MFDES_GET_VERSION was too short: data in Hardware Information is probably invalid.");
print_result("Answer", resp, len);
}
return;
}
memcpy(payload.versionHW, resp + 1, sizeof(payload.versionHW));
// ADDITION_FRAME 1
cmd[1] = MFDES_ADDITIONAL_FRAME;
len = DesfireAPDU(cmd, cmd_len, resp);
if (!len) {
payload.isOK = 3; // 3 == DOESN'T ANSWER TO GET_VERSION
reply_ng(CMD_HF_DESFIRE_INFO, PM3_ESOFT, (uint8_t *)&payload, sizeof(payload));
switch_off();
return;
}
if (len < sizeof(payload.versionSW) + 1) {
payload.isOK = 3; // 3 == DOESN'T ANSWER TO GET_VERSION
reply_ng(CMD_HF_DESFIRE_INFO, PM3_ESOFT, (uint8_t *)&payload, sizeof(payload));
switch_off();
if (g_dbglevel >= DBG_ERROR) {
Dbprintf("Tag answer to MFDES_ADDITIONAL_FRAME 1 was too short: data in Software Information is probably invalid.");
print_result("Answer", resp, len);
}
return;
}
memcpy(payload.versionSW, resp + 1, sizeof(payload.versionSW));
// ADDITION_FRAME 2
len = DesfireAPDU(cmd, cmd_len, resp);
if (!len) {
payload.isOK = 3; // 3 == DOESN'T ANSWER TO GET_VERSION
reply_ng(CMD_HF_DESFIRE_INFO, PM3_ESOFT, (uint8_t *)&payload, sizeof(payload));
switch_off();
return;
}
if (len < sizeof(payload.details) + 1) {
payload.isOK = 3; // 3 == DOESN'T ANSWER TO GET_VERSION
reply_ng(CMD_HF_DESFIRE_INFO, PM3_ESOFT, (uint8_t *)&payload, sizeof(payload));
switch_off();
if (g_dbglevel >= DBG_ERROR) {
Dbprintf("Tag answer to MFDES_ADDITIONAL_FRAME 2 was too short: data in Batch number and Production date is probably invalid");
print_result("Answer", resp, len);
}
return;
}
memcpy(payload.details, resp + 1, sizeof(payload.details));
reply_ng(CMD_HF_DESFIRE_INFO, PM3_SUCCESS, (uint8_t *)&payload, sizeof(payload));
// reset the pcb_blocknum,
pcb_blocknum = 0;
OnSuccess();
}
typedef struct {
uint8_t sessionkeylen;
uint8_t sessionkey[24];
} authres_t;
void MifareDES_Auth1(uint8_t *datain) {
int len = 0;
struct p {
uint8_t mode;
uint8_t algo;
uint8_t keyno;
uint8_t keylen;
uint8_t key[24];
} PACKED;
struct p *payload = (struct p *) datain;
// 3 different way to authenticate AUTH (CRC16) , AUTH_ISO (CRC32) , AUTH_AES (CRC32)
// 4 different crypto arg1 DES, 3DES, 3K3DES, AES
// 3 different communication modes, PLAIN,MAC,CRYPTO
mbedtls_aes_context ctx;
uint8_t keybytes[24];
uint8_t resp[256] = {0x00};
uint8_t cmd[40] = {0x00};
// Crypt constants
uint8_t IV[16] = {0x00};
uint8_t RndA[16] = {0x00};
uint8_t RndB[16] = {0x00};
uint8_t encRndB[16] = {0x00};
uint8_t rotRndB[16] = {0x00}; //RndB'
uint8_t both[32] = {0x00}; // ek/dk_keyNo(RndA+RndB')
// Generate Random Value
uint32_t value = prng_successor(GetTickCount(), 32);
num_to_bytes(value, 4, &RndA[0]);
value = prng_successor(GetTickCount(), 32);
num_to_bytes(value, 4, &RndA[4]);
value = prng_successor(GetTickCount(), 32);
num_to_bytes(value, 4, &RndA[8]);
value = prng_successor(GetTickCount(), 32);
num_to_bytes(value, 4, &RndA[12]);
// Default Keys
uint8_t PICC_MASTER_KEY8[8] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
uint8_t PICC_MASTER_KEY16[16] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00
};
uint8_t PICC_MASTER_KEY24[24] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 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};
//InitDesfireCard();
// Part 1
LED_A_ON();
LED_B_OFF();
LED_C_OFF();
if (payload->keylen == 0) {
if (payload->algo == MFDES_AUTH_DES) {
memcpy(keybytes, PICC_MASTER_KEY8, 8);
} else if (payload->algo == MFDES_ALGO_AES || payload->algo == MFDES_ALGO_3DES) {
memcpy(keybytes, PICC_MASTER_KEY16, 16);
} else if (payload->algo == MFDES_ALGO_3K3DES) {
memcpy(keybytes, PICC_MASTER_KEY24, 24);
}
} else {
memcpy(keybytes, payload->key, payload->keylen);
}
struct desfire_key defaultkey = {0};
desfirekey_t key = &defaultkey;
if (payload->algo == MFDES_ALGO_AES) {
mbedtls_aes_init(&ctx);
Desfire_aes_key_new(keybytes, key);
} else if (payload->algo == MFDES_ALGO_3DES) {
Desfire_3des_key_new_with_version(keybytes, key);
} else if (payload->algo == MFDES_ALGO_DES) {
Desfire_des_key_new(keybytes, key);
} else if (payload->algo == MFDES_ALGO_3K3DES) {
Desfire_3k3des_key_new_with_version(keybytes, key);
}
uint8_t subcommand = MFDES_AUTHENTICATE;
if (payload->mode == MFDES_AUTH_AES) {
subcommand = MFDES_AUTHENTICATE_AES;
} else if (payload->mode == MFDES_AUTH_ISO) {
subcommand = MFDES_AUTHENTICATE_ISO;
}
if (payload->mode != MFDES_AUTH_PICC) {
// Let's send our auth command
cmd[0] = 0x90;
cmd[1] = subcommand;
cmd[2] = 0x0;
cmd[3] = 0x0;
cmd[4] = 0x1;
cmd[5] = payload->keyno;
cmd[6] = 0x0;
len = DesfireAPDU(cmd, 7, resp);
} else {
cmd[0] = MFDES_AUTHENTICATE;
cmd[1] = payload->keyno;
len = DesfireAPDU(cmd, 2, resp);
}
if (len == 0) {
if (g_dbglevel >= DBG_ERROR) {
DbpString("Authentication failed. Card timeout.");
}
OnErrorNG(CMD_HF_DESFIRE_AUTH1, 3);
return;
}
if (resp[2] == (uint8_t)MFDES_ADDITIONAL_FRAME) {
DbpString("Authentication failed. Invalid key number.");
OnErrorNG(CMD_HF_DESFIRE_AUTH1, 3);
return;
}
int rndlen = 8;
int expectedlen = 1 + 8 + 2 + 2;
if (payload->algo == MFDES_ALGO_AES || payload->algo == MFDES_ALGO_3K3DES) {
expectedlen = 1 + 16 + 2 + 2;
rndlen = 16;
}
if (payload->mode == MFDES_AUTH_PICC) {
expectedlen = 1 + 1 + 8 + 2;
rndlen = 8;
}
if (len != expectedlen) {
if (g_dbglevel >= DBG_ERROR) {
DbpString("Authentication failed. Length of answer doesn't match algo.");
print_result("Res-Buffer: ", resp, len);
}
OnErrorNG(CMD_HF_DESFIRE_AUTH1, 3);
return;
}
// Part 2
if (payload->mode != MFDES_AUTH_PICC) {
memcpy(encRndB, resp + 1, rndlen);
} else {
memcpy(encRndB, resp + 2, rndlen);
}
// Part 3
if (payload->algo == MFDES_ALGO_AES) {
if (mbedtls_aes_setkey_dec(&ctx, key->data, 128) != 0) {
if (g_dbglevel >= DBG_EXTENDED) {
DbpString("mbedtls_aes_setkey_dec failed");
}
OnErrorNG(CMD_HF_DESFIRE_AUTH1, 7);
return;
}
mbedtls_aes_crypt_cbc(&ctx, MBEDTLS_AES_DECRYPT, 16, IV, encRndB, RndB);
} else if (payload->algo == MFDES_ALGO_DES) {
des_decrypt(RndB, encRndB, key->data);
} else if (payload->algo == MFDES_ALGO_3DES) {
tdes_nxp_receive(encRndB, RndB, rndlen, key->data, IV, 2);
} else if (payload->algo == MFDES_ALGO_3K3DES) {
tdes_nxp_receive(encRndB, RndB, rndlen, key->data, IV, 3);
}
// - Rotate RndB by 8 bits
memcpy(rotRndB, RndB, rndlen);
rol(rotRndB, rndlen);
uint8_t encRndA[16] = {0x00};
// - Encrypt our response
if (payload->mode == MFDES_AUTH_DES || payload->mode == MFDES_AUTH_PICC) {
des_decrypt(encRndA, RndA, key->data);
memcpy(both, encRndA, rndlen);
for (int x = 0; x < rndlen; x++) {
rotRndB[x] = rotRndB[x] ^ encRndA[x];
}
des_decrypt(encRndB, rotRndB, key->data);
memcpy(both + 8, encRndB, rndlen);
} else if (payload->mode == MFDES_AUTH_ISO) {
if (payload->algo == MFDES_ALGO_3DES) {
uint8_t tmp[16] = {0x00};
memcpy(tmp, RndA, rndlen);
memcpy(tmp + rndlen, rotRndB, rndlen);
tdes_nxp_send(tmp, both, 16, key->data, IV, 2);
} else if (payload->algo == MFDES_ALGO_3K3DES) {
uint8_t tmp[32] = {0x00};
memcpy(tmp, RndA, rndlen);
memcpy(tmp + rndlen, rotRndB, rndlen);
tdes_nxp_send(tmp, both, 32, key->data, IV, 3);
}
} else if (payload->mode == MFDES_AUTH_AES) {
uint8_t tmp[32] = {0x00};
memcpy(tmp, RndA, rndlen);
memcpy(tmp + 16, rotRndB, rndlen);
if (payload->algo == MFDES_ALGO_AES) {
if (mbedtls_aes_setkey_enc(&ctx, key->data, 128) != 0) {
if (g_dbglevel >= DBG_EXTENDED) {
DbpString("mbedtls_aes_setkey_enc failed");
}
OnErrorNG(CMD_HF_DESFIRE_AUTH1, 7);
return;
}
mbedtls_aes_crypt_cbc(&ctx, MBEDTLS_AES_ENCRYPT, 32, IV, tmp, both);
}
}
int bothlen = 16;
if (payload->algo == MFDES_ALGO_AES || payload->algo == MFDES_ALGO_3K3DES) {
bothlen = 32;
}
if (payload->mode != MFDES_AUTH_PICC) {
cmd[0] = 0x90;
cmd[1] = MFDES_ADDITIONAL_FRAME;
cmd[2] = 0x00;
cmd[3] = 0x00;
cmd[4] = bothlen;
memcpy(cmd + 5, both, bothlen);
cmd[bothlen + 5] = 0x0;
len = DesfireAPDU(cmd, 5 + bothlen + 1, resp);
} else {
cmd[0] = MFDES_ADDITIONAL_FRAME;
memcpy(cmd + 1, both, bothlen);
len = DesfireAPDU(cmd, 1 + bothlen, resp);
}
if (!len) {
if (g_dbglevel >= DBG_ERROR) {
DbpString("Authentication failed. Card timeout.");
}
OnErrorNG(CMD_HF_DESFIRE_AUTH1, 3);
return;
}
if (payload->mode != MFDES_AUTH_PICC) {
if ((resp[len - 4] != 0x91) || (resp[len - 3] != 0x00)) {
DbpString("Authentication failed.");
OnErrorNG(CMD_HF_DESFIRE_AUTH1, 6);
return;
}
} else {
if (resp[1] != 0x00) {
DbpString("Authentication failed.");
OnErrorNG(CMD_HF_DESFIRE_AUTH1, 6);
return;
}
}
// Part 4
Desfire_session_key_new(RndA, RndB, key, sessionkey);
if (g_dbglevel >= DBG_EXTENDED) {
print_result("SESSIONKEY : ", sessionkey->data, payload->keylen);
}
if (payload->mode != MFDES_AUTH_PICC) {
memcpy(encRndA, resp + 1, rndlen);
} else {
memcpy(encRndA, resp + 2, rndlen);
}
if (payload->mode == MFDES_AUTH_DES || payload->mode == MFDES_AUTH_PICC) {
if (payload->algo == MFDES_ALGO_DES) {
des_decrypt(encRndA, encRndA, key->data);
} else if (payload->algo == MFDES_ALGO_3DES) {
tdes_nxp_receive(encRndA, encRndA, rndlen, key->data, IV, 2);
} else if (payload->algo == MFDES_ALGO_3K3DES) {
tdes_nxp_receive(encRndA, encRndA, rndlen, key->data, IV, 3);
}
} else if (payload->mode == MFDES_AUTH_AES) {
if (mbedtls_aes_setkey_dec(&ctx, key->data, 128) != 0) {
if (g_dbglevel >= DBG_EXTENDED) {
DbpString("mbedtls_aes_setkey_dec failed");
}
OnErrorNG(CMD_HF_DESFIRE_AUTH1, 7);
return;
}
mbedtls_aes_crypt_cbc(&ctx, MBEDTLS_AES_DECRYPT, 16, IV, encRndA, encRndA);
}
rol(RndA, rndlen);
if (g_dbglevel >= DBG_EXTENDED) {
print_result("RndA : ", RndA, rndlen);
print_result("RndB: ", RndB, rndlen);
print_result("encRndA : ", encRndA, rndlen);
}
for (int x = 0; x < rndlen; x++) {
if (RndA[x] != encRndA[x]) {
DbpString("Authentication failed. Cannot verify Session Key.");
OnErrorNG(CMD_HF_DESFIRE_AUTH1, 4);
return;
}
}
//Change the selected key to a new value.
/*
// Current key is a 3DES key, change it to a DES key
if (payload->algo == 2) {
cmd[0] = 0x90;
cmd[1] = CHANGE_KEY;
cmd[2] = payload->keyno;
uint8_t newKey[16] = {0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77};
uint8_t first, second;
uint8_t buff1[8] = {0x00};
uint8_t buff2[8] = {0x00};
uint8_t buff3[8] = {0x00};
memcpy(buff1,newKey, 8);
memcpy(buff2,newKey + 8, 8);
compute_crc(CRC_14443_A, newKey, 16, &first, &second);
memcpy(buff3, &first, 1);
memcpy(buff3 + 1, &second, 1);
tdes_dec(&buff1, &buff1, skey->data);
memcpy(cmd+2,buff1,8);
for (int x = 0; x < 8; x++) {
buff2[x] = buff2[x] ^ buff1[x];
}
tdes_dec(&buff2, &buff2, skey->data);
memcpy(cmd+10,buff2,8);
for (int x = 0; x < 8; x++) {
buff3[x] = buff3[x] ^ buff2[x];
}
tdes_dec(&buff3, &buff3, skey->data);
memcpy(cmd+19,buff3,8);
// The command always times out on the first attempt, this will retry until a response
// is received.
len = 0;
while(!len) {
len = DesfireAPDU(cmd,27,resp);
}
} else {
// Current key is a DES key, change it to a 3DES key
if (payload->algo == 1) {
cmd[0] = 0x90;
cmd[1] = CHANGE_KEY;
cmd[2] = payload->keyno;
uint8_t newKey[16] = {0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47,0x48,0x49,0x4a,0x4b,0x4c,0x4d,0x4e,0x4f};
uint8_t first, second;
uint8_t buff1[8] = {0x00};
uint8_t buff2[8] = {0x00};
uint8_t buff3[8] = {0x00};
memcpy(buff1,newKey, 8);
memcpy(buff2,newKey + 8, 8);
compute_crc(CRC_14443_A, newKey, 16, &first, &second);
memcpy(buff3, &first, 1);
memcpy(buff3 + 1, &second, 1);
des_dec(&buff1, &buff1, skey->data);
memcpy(cmd+3,buff1,8);
for (int x = 0; x < 8; x++) {
buff2[x] = buff2[x] ^ buff1[x];
}
des_dec(&buff2, &buff2, skey->data);
memcpy(cmd+11,buff2,8);
for (int x = 0; x < 8; x++) {
buff3[x] = buff3[x] ^ buff2[x];
}
des_dec(&buff3, &buff3, skey->data);
memcpy(cmd+19,buff3,8);
// The command always times out on the first attempt, this will retry until a response
// is received.
len = 0;
while(!len) {
len = DesfireAPDU(cmd,27,resp);
}
}
}
*/
LED_B_ON();
authres_t rpayload;
rpayload.sessionkeylen = payload->keylen;
memcpy(rpayload.sessionkey, sessionkey->data, rpayload.sessionkeylen);
reply_ng(CMD_HF_DESFIRE_AUTH1, PM3_SUCCESS, (uint8_t *)&rpayload, sizeof(rpayload));
LED_B_OFF();
}
// 3 different ISO ways to send data to a DESFIRE (direct, capsuled, capsuled ISO)
// cmd = cmd bytes to send
// cmd_len = length of cmd
// dataout = pointer to response data array
int DesfireAPDU(uint8_t *cmd, size_t cmd_len, uint8_t *dataout) {
size_t len = 0;
size_t wrappedLen = 0;
uint8_t wCmd[PM3_CMD_DATA_SIZE] = {0x00};
uint8_t resp[MAX_FRAME_SIZE];
uint8_t par[MAX_PARITY_SIZE];
wrappedLen = CreateAPDU(cmd, cmd_len, wCmd);
if (g_dbglevel >= DBG_EXTENDED) {
print_result("WCMD <--: ", wCmd, wrappedLen);
}
ReaderTransmit(wCmd, wrappedLen, NULL);
len = ReaderReceive(resp, sizeof(resp), par);
if (len == 0) {
if (g_dbglevel >= DBG_EXTENDED) Dbprintf("fukked");
return false; //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
if (len >= 4 // PCB+CID+CRC = 4 bytes
&& ((resp[0] & 0xC0) == 0 // I-Block
|| (resp[0] & 0xD0) == 0x80) // R-Block with ACK bit set to 0
&& (resp[0] & 0x01) == pcb_blocknum) { // equal block numbers
pcb_blocknum ^= 1; //toggle next block
}
memcpy(dataout, resp, len);
return len;
}
// CreateAPDU
size_t CreateAPDU(uint8_t *datain, size_t len, uint8_t *dataout) {
size_t cmdlen = MIN(len + 3, PM3_CMD_DATA_SIZE - 1);
uint8_t cmd[cmdlen];
memset(cmd, 0, cmdlen);
cmd[0] = 0x02; // 0x0A = send cid, 0x02 = no cid.
cmd[0] |= pcb_blocknum; // OR the block number into the PCB
if (g_dbglevel >= DBG_EXTENDED) Dbprintf("pcb_blocknum %d == %d ", pcb_blocknum, cmd[0]);
//cmd[1] = 0x90; // CID: 0x00 //TODO: allow multiple selected cards
memcpy(cmd + 1, datain, len);
AddCrc14A(cmd, len + 1);
/*
hf 14a apdu -sk 90 60 00 00 00
hf 14a apdu -k 90 AF 00 00 00
hf 14a apdu 90AF000000
*/
memcpy(dataout, cmd, cmdlen);
return cmdlen;
}
// crc_update(&desfire_crc32, 0, 1); /* CMD_WRITE */
// crc_update(&desfire_crc32, addr, addr_sz);
// crc_update(&desfire_crc32, byte, 8);
// uint32_t crc = crc_finish(&desfire_crc32);
void OnSuccess(void) {
pcb_blocknum = 0;
ReaderTransmit(deselect_cmd, 3, NULL);
if (mifare_ultra_halt()) {
if (g_dbglevel >= DBG_ERROR) Dbprintf("Halt error");
}
switch_off();
}
void OnError(uint8_t reason) {
reply_mix(CMD_ACK, 0, reason, 0, 0, 0);
OnSuccess();
}
void OnErrorNG(uint16_t cmd, uint8_t reason) {
reply_ng(cmd, reason, NULL, 0);
OnSuccess();
}
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