mirror of
https://github.com/RfidResearchGroup/proxmark3.git
synced 2024-09-20 23:36:31 +08:00
578 lines
16 KiB
C
578 lines
16 KiB
C
#include "mifaredesfire.h"
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#include "BigBuf.h"
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#define MAX_APPLICATION_COUNT 28
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#define MAX_FILE_COUNT 16
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#define MAX_DESFIRE_FRAME_SIZE 60
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#define NOT_YET_AUTHENTICATED 255
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#define FRAME_PAYLOAD_SIZE (MAX_DESFIRE_FRAME_SIZE - 5)
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#define RECEIVE_SIZE 64
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// the block number for the ISO14443-4 PCB
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uint8_t pcb_blocknum = 0;
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// Deselect card by sending a s-block. the crc is precalced for speed
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static uint8_t deselect_cmd[] = {0xc2,0xe0,0xb4};
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//static uint8_t __msg[MAX_FRAME_SIZE] = { 0x0A, 0x00, 0x00, /* ..., */ 0x00 };
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/* PCB CID CMD PAYLOAD */
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//static uint8_t __res[MAX_FRAME_SIZE];
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bool InitDesfireCard(){
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iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
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set_tracing(TRUE);
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byte_t cardbuf[USB_CMD_DATA_SIZE] = {0x00};
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iso14a_card_select_t *card = (iso14a_card_select_t*)cardbuf;
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int len = iso14443a_select_card(NULL,card,NULL,true,0);
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if (!len) {
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if (MF_DBGLEVEL >= MF_DBG_ERROR)
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Dbprintf("Can't select card");
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OnError(1);
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return false;
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}
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return true;
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}
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// ARG0 flag enums
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enum {
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NONE = 0x00,
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INIT = 0x01,
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DISCONNECT = 0x02,
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CLEARTRACE = 0x04,
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BAR = 0x08,
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} CmdOptions ;
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void MifareSendCommand(uint8_t arg0, uint8_t arg1, uint8_t *datain){
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/* ARG0 contains flags.
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0x01 = init card.
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0x02 = Disconnect
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0x03
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*/
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uint8_t flags = arg0;
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size_t datalen = arg1;
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uint8_t resp[RECEIVE_SIZE];
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memset(resp,0,sizeof(resp));
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if (MF_DBGLEVEL >= 4) {
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Dbprintf(" flags : %02X", flags);
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Dbprintf(" len : %02X", datalen);
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print_result(" RX : ", datain, datalen);
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}
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if ( flags & CLEARTRACE )
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clear_trace();
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if ( flags & INIT ){
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if ( !InitDesfireCard() )
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return;
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}
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int len = DesfireAPDU(datain, datalen, resp);
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if (MF_DBGLEVEL >= 4)
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print_result("ERR <--: ", resp, len);
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if ( !len ) {
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OnError(2);
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return;
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}
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// reset the pcb_blocknum,
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pcb_blocknum = 0;
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if ( flags & DISCONNECT )
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OnSuccess();
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cmd_send(CMD_ACK,1,len,0,resp,len);
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}
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void MifareDesfireGetInformation(){
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int len = 0;
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uint8_t resp[USB_CMD_DATA_SIZE] = {0x00};
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uint8_t dataout[USB_CMD_DATA_SIZE] = {0x00};
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byte_t cardbuf[USB_CMD_DATA_SIZE] = {0x00};
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/*
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1 = PCB 1
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2 = cid 2
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3 = desfire command 3
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4-5 = crc 4 key
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5-6 crc
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PCB == 0x0A because sending CID byte.
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CID == 0x00 first card?
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*/
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clear_trace();
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set_tracing(TRUE);
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iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
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// card select - information
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iso14a_card_select_t *card = (iso14a_card_select_t*)cardbuf;
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byte_t isOK = iso14443a_select_card(NULL, card, NULL, true, 0);
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if ( isOK == 0) {
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if (MF_DBGLEVEL >= MF_DBG_ERROR) {
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Dbprintf("Can't select card");
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}
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OnError(1);
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return;
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}
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memcpy(dataout,card->uid,7);
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LED_A_ON();
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LED_B_OFF();
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LED_C_OFF();
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uint8_t cmd[] = {GET_VERSION};
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size_t cmd_len = sizeof(cmd);
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len = DesfireAPDU(cmd, cmd_len, resp);
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if ( !len ) {
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print_result("ERROR <--: ", resp, len);
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OnError(2);
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return;
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}
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LED_A_OFF();
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LED_B_ON();
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memcpy(dataout+7,resp+3,7);
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// ADDITION_FRAME 1
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cmd[0] = ADDITIONAL_FRAME;
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len = DesfireAPDU(cmd, cmd_len, resp);
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if ( !len ) {
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print_result("ERROR <--: ", resp, len);
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OnError(2);
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return;
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}
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LED_B_OFF();
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LED_C_ON();
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memcpy(dataout+7+7,resp+3,7);
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// ADDITION_FRAME 2
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len = DesfireAPDU(cmd, cmd_len, resp);
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if ( !len ) {
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print_result("ERROR <--: ", resp, len);
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OnError(2);
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return;
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}
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memcpy(dataout+7+7+7,resp+3,14);
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cmd_send(CMD_ACK,1,0,0,dataout,sizeof(dataout));
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// reset the pcb_blocknum,
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pcb_blocknum = 0;
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OnSuccess();
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}
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void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno, uint8_t *datain){
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int len = 0;
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//uint8_t PICC_MASTER_KEY8[8] = { 0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47};
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uint8_t PICC_MASTER_KEY16[16] = { 0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47,0x48,0x49,0x4a,0x4b,0x4c,0x4d,0x4e,0x4f };
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uint8_t null_key_data8[8] = {0x00};
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//uint8_t null_key_data16[16] = {0x00};
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//uint8_t new_key_data8[8] = { 0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77};
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//uint8_t new_key_data16[16] = { 0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x88,0x99,0xAA,0xBB,0xCC,0xDD,0xEE,0xFF};
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uint8_t resp[256] = {0x00};
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uint8_t IV[16] = {0x00};
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size_t datalen = datain[0];
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uint8_t cmd[40] = {0x00};
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uint8_t encRndB[16] = {0x00};
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uint8_t decRndB[16] = {0x00};
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uint8_t nonce[16] = {0x00};
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uint8_t both[32] = {0x00};
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uint8_t encBoth[32] = {0x00};
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InitDesfireCard();
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LED_A_ON();
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LED_B_OFF();
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LED_C_OFF();
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// 3 olika s<>tt att authenticera. AUTH (CRC16) , AUTH_ISO (CRC32) , AUTH_AES (CRC32)
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// 4 olika crypto algo DES, 3DES, 3K3DES, AES
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// 3 olika kommunikations s<>tt, PLAIN,MAC,CRYPTO
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// des, nyckel 0,
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switch (mode){
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case 1:{
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uint8_t keybytes[16];
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uint8_t RndA[8] = {0x00};
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uint8_t RndB[8] = {0x00};
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if (algo == 2) {
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if (datain[1] == 0xff){
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memcpy(keybytes,PICC_MASTER_KEY16,16);
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} else {
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memcpy(keybytes, datain+1, datalen);
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}
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} else {
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if (algo == 1) {
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if (datain[1] == 0xff){
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memcpy(keybytes,null_key_data8,8);
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} else{
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memcpy(keybytes, datain+1, datalen);
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}
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}
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}
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struct desfire_key defaultkey = {0};
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desfirekey_t key = &defaultkey;
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if (algo == 2)
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Desfire_3des_key_new_with_version(keybytes, key);
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else if (algo ==1)
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Desfire_des_key_new(keybytes, key);
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cmd[0] = AUTHENTICATE;
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cmd[1] = keyno; //keynumber
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len = DesfireAPDU(cmd, 2, resp);
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if ( !len ) {
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if (MF_DBGLEVEL >= MF_DBG_ERROR) {
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DbpString("Authentication failed. Card timeout.");
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}
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OnError(3);
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return;
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}
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if ( resp[2] == 0xaf ){
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} else {
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DbpString("Authetication failed. Invalid key number.");
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OnError(3);
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return;
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}
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memcpy( encRndB, resp+3, 8);
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if (algo == 2)
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tdes_dec(&decRndB, &encRndB, key->data);
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else if (algo == 1)
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des_dec(&decRndB, &encRndB, key->data);
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memcpy(RndB, decRndB, 8);
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rol(decRndB,8);
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// This should be random
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uint8_t decRndA[8] = {0x00};
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memcpy(RndA, decRndA, 8);
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uint8_t encRndA[8] = {0x00};
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if (algo == 2)
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tdes_dec(&encRndA, &decRndA, key->data);
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else if (algo == 1)
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des_dec(&encRndA, &decRndA, key->data);
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memcpy(both, encRndA, 8);
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for (int x = 0; x < 8; x++) {
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decRndB[x] = decRndB[x] ^ encRndA[x];
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}
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if (algo == 2)
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tdes_dec(&encRndB, &decRndB, key->data);
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else if (algo == 1)
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des_dec(&encRndB, &decRndB, key->data);
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memcpy(both + 8, encRndB, 8);
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cmd[0] = ADDITIONAL_FRAME;
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memcpy(cmd+1, both, 16 );
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len = DesfireAPDU(cmd, 17, resp);
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if ( !len ) {
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if (MF_DBGLEVEL >= MF_DBG_ERROR) {
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DbpString("Authentication failed. Card timeout.");
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}
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OnError(3);
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return;
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}
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if ( resp[2] == 0x00 ){
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struct desfire_key sessionKey = {0};
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desfirekey_t skey = &sessionKey;
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Desfire_session_key_new( RndA, RndB , key, skey );
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//print_result("SESSION : ", skey->data, 8);
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memcpy(encRndA, resp+3, 8);
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if (algo == 2)
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tdes_dec(&encRndA, &encRndA, key->data);
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else if (algo == 1)
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des_dec(&encRndA, &encRndA, key->data);
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rol(decRndA,8);
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for (int x = 0; x < 8; x++) {
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if (decRndA[x] != encRndA[x]) {
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DbpString("Authetication failed. Cannot varify PICC.");
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OnError(4);
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return;
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}
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}
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//Change the selected key to a new value.
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/*
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// Current key is a 3DES key, change it to a DES key
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if (algo == 2) {
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cmd[0] = CHANGE_KEY;
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cmd[1] = keyno;
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uint8_t newKey[16] = {0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77};
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uint8_t first, second;
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uint8_t buff1[8] = {0x00};
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uint8_t buff2[8] = {0x00};
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uint8_t buff3[8] = {0x00};
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memcpy(buff1,newKey, 8);
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memcpy(buff2,newKey + 8, 8);
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ComputeCrc14443(CRC_14443_A, newKey, 16, &first, &second);
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memcpy(buff3, &first, 1);
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memcpy(buff3 + 1, &second, 1);
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tdes_dec(&buff1, &buff1, skey->data);
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memcpy(cmd+2,buff1,8);
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for (int x = 0; x < 8; x++) {
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buff2[x] = buff2[x] ^ buff1[x];
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}
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tdes_dec(&buff2, &buff2, skey->data);
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memcpy(cmd+10,buff2,8);
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for (int x = 0; x < 8; x++) {
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buff3[x] = buff3[x] ^ buff2[x];
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}
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tdes_dec(&buff3, &buff3, skey->data);
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memcpy(cmd+18,buff3,8);
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// The command always times out on the first attempt, this will retry until a response
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// is recieved.
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len = 0;
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while(!len) {
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len = DesfireAPDU(cmd,26,resp);
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}
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} else {
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// Current key is a DES key, change it to a 3DES key
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if (algo == 1) {
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cmd[0] = CHANGE_KEY;
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cmd[1] = keyno;
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uint8_t newKey[16] = {0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47,0x48,0x49,0x4a,0x4b,0x4c,0x4d,0x4e,0x4f};
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uint8_t first, second;
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uint8_t buff1[8] = {0x00};
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uint8_t buff2[8] = {0x00};
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uint8_t buff3[8] = {0x00};
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memcpy(buff1,newKey, 8);
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memcpy(buff2,newKey + 8, 8);
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ComputeCrc14443(CRC_14443_A, newKey, 16, &first, &second);
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memcpy(buff3, &first, 1);
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memcpy(buff3 + 1, &second, 1);
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des_dec(&buff1, &buff1, skey->data);
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memcpy(cmd+2,buff1,8);
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for (int x = 0; x < 8; x++) {
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buff2[x] = buff2[x] ^ buff1[x];
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}
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des_dec(&buff2, &buff2, skey->data);
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memcpy(cmd+10,buff2,8);
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for (int x = 0; x < 8; x++) {
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buff3[x] = buff3[x] ^ buff2[x];
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}
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des_dec(&buff3, &buff3, skey->data);
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memcpy(cmd+18,buff3,8);
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// The command always times out on the first attempt, this will retry until a response
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// is recieved.
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len = 0;
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while(!len) {
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len = DesfireAPDU(cmd,26,resp);
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}
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}
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}
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*/
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OnSuccess();
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if (algo == 2)
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cmd_send(CMD_ACK,1,0,0,skey->data,16);
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else if (algo == 1)
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cmd_send(CMD_ACK,1,0,0,skey->data,8);
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} else {
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DbpString("Authetication failed.");
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OnError(6);
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return;
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}
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}
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break;
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case 2:
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//SendDesfireCommand(AUTHENTICATE_ISO, &keyno, resp);
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break;
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case 3:{
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//defaultkey
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uint8_t keybytes[16] = {0x00};
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if (datain[1] == 0xff){
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memcpy(keybytes,PICC_MASTER_KEY16,16);
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} else{
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memcpy(keybytes, datain+1, datalen);
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}
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struct desfire_key defaultkey = {0x00};
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desfirekey_t key = &defaultkey;
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Desfire_aes_key_new( keybytes, key);
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AesCtx ctx;
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if ( AesCtxIni(&ctx, IV, key->data, KEY128, CBC) < 0 ){
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if( MF_DBGLEVEL >= 4) {
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Dbprintf("AES context failed to init");
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}
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OnError(7);
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return;
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}
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cmd[0] = AUTHENTICATE_AES;
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cmd[1] = 0x00; //keynumber
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len = DesfireAPDU(cmd, 2, resp);
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if ( !len ) {
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if (MF_DBGLEVEL >= MF_DBG_ERROR) {
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DbpString("Authentication failed. Card timeout.");
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}
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OnError(3);
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return;
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}
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memcpy( encRndB, resp+3, 16);
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// dekryptera tagnonce.
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AesDecrypt(&ctx, encRndB, decRndB, 16);
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rol(decRndB,16);
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memcpy(both, nonce,16);
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memcpy(both+16, decRndB ,16 );
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AesEncrypt(&ctx, both, encBoth, 32 );
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cmd[0] = ADDITIONAL_FRAME;
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memcpy(cmd+1, encBoth, 32 );
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len = DesfireAPDU(cmd, 33, resp); // 1 + 32 == 33
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if ( !len ) {
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if (MF_DBGLEVEL >= MF_DBG_ERROR) {
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DbpString("Authentication failed. Card timeout.");
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}
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OnError(3);
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return;
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}
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if ( resp[2] == 0x00 ){
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// Create AES Session key
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struct desfire_key sessionKey = {0};
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desfirekey_t skey = &sessionKey;
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Desfire_session_key_new( nonce, decRndB , key, skey );
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print_result("SESSION : ", skey->data, 16);
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} else {
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DbpString("Authetication failed.");
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OnError(7);
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return;
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}
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break;
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}
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}
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OnSuccess();
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cmd_send(CMD_ACK,1,len,0,resp,len);
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}
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// 3 olika ISO s<>tt att skicka data till DESFIRE (direkt, inkapslat, inkapslat 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[USB_CMD_DATA_SIZE] = {0x00};
|
||
|
||
uint8_t resp[MAX_FRAME_SIZE];
|
||
uint8_t par[MAX_PARITY_SIZE];
|
||
|
||
wrappedLen = CreateAPDU( cmd, cmd_len, wCmd);
|
||
|
||
if (MF_DBGLEVEL >= 4) {
|
||
print_result("WCMD <--: ", wCmd, wrappedLen);
|
||
}
|
||
ReaderTransmit( wCmd, wrappedLen, NULL);
|
||
|
||
len = ReaderReceive(resp, par);
|
||
|
||
if ( !len ) {
|
||
if (MF_DBGLEVEL >= 4) 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
|
||
else 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+4, USB_CMD_DATA_SIZE-1);
|
||
|
||
uint8_t cmd[cmdlen];
|
||
memset(cmd, 0, cmdlen);
|
||
|
||
cmd[0] = 0x0A; // 0x0A = skicka cid, 0x02 = ingen cid. S<>rskilda bitar //
|
||
cmd[0] |= pcb_blocknum; // OR the block number into the PCB
|
||
cmd[1] = 0x00; // CID: 0x00 //TODO: allow multiple selected cards
|
||
|
||
memcpy(cmd+2, datain, len);
|
||
AppendCrc14443a(cmd, len+2);
|
||
|
||
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(){
|
||
pcb_blocknum = 0;
|
||
ReaderTransmit(deselect_cmd, 3 , NULL);
|
||
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
|
||
LEDsoff();
|
||
set_tracing(FALSE);
|
||
}
|
||
|
||
void OnError(uint8_t reason){
|
||
cmd_send(CMD_ACK,0,reason,0,0,0);
|
||
OnSuccess();
|
||
}
|