X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/b44e523300b3fbe0a5d9b3081aaa588be3095b14..3bc7b13d237109c9dca948326315c1476f78c415:/armsrc/mifaredesfire.c diff --git a/armsrc/mifaredesfire.c b/armsrc/mifaredesfire.c index 14c6aa34..4d68bf5f 100644 --- a/armsrc/mifaredesfire.c +++ b/armsrc/mifaredesfire.c @@ -1,220 +1,202 @@ #include "mifaredesfire.h" +#include "des.h" +#include "BigBuf.h" #define MAX_APPLICATION_COUNT 28 #define MAX_FILE_COUNT 16 -#define MAX_FRAME_SIZE 60 +#define MAX_DESFIRE_FRAME_SIZE 60 #define NOT_YET_AUTHENTICATED 255 -#define FRAME_PAYLOAD_SIZE (MAX_FRAME_SIZE - 5) +#define FRAME_PAYLOAD_SIZE (MAX_DESFIRE_FRAME_SIZE - 5) +#define RECEIVE_SIZE 64 + +// the block number for the ISO14443-4 PCB +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]; -void MifareDesfireGetInformation(){ - +bool InitDesfireCard(){ - uint8_t len = 0; - uint8_t resp[RECV_RES_SIZE]; - uint8_t dataout[RECV_CMD_SIZE]; - byte_t buf[RECV_RES_SIZE]; + iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN); + set_tracing(TRUE); + + byte_t cardbuf[USB_CMD_DATA_SIZE] = {0x00}; + iso14a_card_select_t *card = (iso14a_card_select_t*)cardbuf; + int len = iso14443a_select_card(NULL,card,NULL); + + if (!len) { + if (MF_DBGLEVEL >= MF_DBG_ERROR) + Dbprintf("Can't select card"); + OnError(1); + return false; + } + return true; +} + +// ARG0 flag enums +enum { + NONE = 0x00, + INIT = 0x01, + DISCONNECT = 0x02, + CLEARTRACE = 0x04, + BAR = 0x08, +} CmdOptions ; + +void MifareSendCommand(uint8_t arg0, uint8_t arg1, uint8_t *datain){ + + /* ARG0 contains flags. + 0x01 = init card. + 0x02 = Disconnect + 0x03 + */ + uint8_t flags = arg0; + size_t datalen = arg1; + uint8_t resp[RECEIVE_SIZE]; memset(resp,0,sizeof(resp)); - memset(dataout,0, sizeof(dataout)); - memset(buf,0,sizeof(buf)); + + if (MF_DBGLEVEL >= 4) { + Dbprintf(" flags : %02X", flags); + Dbprintf(" len : %02X", datalen); + print_result(" RX : ", datain, datalen); + } + + if ( flags & CLEARTRACE ){ + clear_trace(); + } + + if ( flags & INIT ){ + if ( !InitDesfireCard() ) + return; + } + + int len = DesfireAPDU(datain, datalen, resp); + if (MF_DBGLEVEL >= 4) { + print_result("ERR <--: ", resp, len); + } + + if ( !len ) { + OnError(2); + return; + } + + // reset the pcb_blocknum, + pcb_blocknum = 0; + + if ( flags & DISCONNECT ){ + OnSuccess(); + } + + cmd_send(CMD_ACK,1,len,0,resp,len); +} + +void MifareDesfireGetInformation(){ + + int len = 0; + uint8_t resp[USB_CMD_DATA_SIZE] = {0x00}; + uint8_t dataout[USB_CMD_DATA_SIZE] = {0x00}; + byte_t cardbuf[USB_CMD_DATA_SIZE] = {0x00}; /* 1 = PCB 1 2 = cid 2 3 = desfire command 3 4-5 = crc 4 key - 5-6 crc - + 5-6 crc PCB == 0x0A because sending CID byte. - CID == 0x00 first card? - + CID == 0x00 first card? */ - uint8_t cmd1[] = {0x0a,0x00,GET_VERSION, 0x00, 0x00 }; - uint8_t cmd2[] = {0x0a,0x00,GET_KEY_VERSION, 0x00, 0x00, 0x00 }; - - iso14a_clear_trace(); - iso14a_set_tracing(TRUE); + clear_trace(); + set_tracing(TRUE); iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN); // card select - information - iso14a_card_select_t *card = (iso14a_card_select_t*)buf; + iso14a_card_select_t *card = (iso14a_card_select_t*)cardbuf; byte_t isOK = iso14443a_select_card(NULL, card, NULL); - if (isOK != 1) { - if (MF_DBGLEVEL >= 1) { + if ( isOK == 0) { + if (MF_DBGLEVEL >= MF_DBG_ERROR) { Dbprintf("Can't select card"); } - OnError(); + OnError(1); return; } - memcpy(dataout,card->uid,7); LED_A_ON(); LED_B_OFF(); LED_C_OFF(); - // GET INFORMATION - AppendCrc14443a(cmd1, 3); - ReaderTransmit(cmd1, sizeof(cmd1), NULL); - len = ReaderReceive(resp); - if ( resp[2] != ADDITIONAL_FRAME) { + uint8_t cmd[] = {GET_VERSION}; + size_t cmd_len = sizeof(cmd); + + len = DesfireAPDU(cmd, cmd_len, resp); + if ( !len ) { print_result("ERROR <--: ", resp, len); - OnError(); + OnError(2); return; } - + + LED_A_OFF(); + LED_B_ON(); memcpy(dataout+7,resp+3,7); // ADDITION_FRAME 1 - ++cmd1[0]; - cmd1[2] = ADDITIONAL_FRAME; - AppendCrc14443a(cmd1, 3); - ReaderTransmit(cmd1, sizeof(cmd1), NULL); - len = ReaderReceive(resp); - - if ( resp[2] != ADDITIONAL_FRAME) { + cmd[0] = ADDITIONAL_FRAME; + len = DesfireAPDU(cmd, cmd_len, resp); + if ( !len ) { print_result("ERROR <--: ", resp, len); - OnError(); + OnError(2); return; } + + LED_B_OFF(); + LED_C_ON(); memcpy(dataout+7+7,resp+3,7); // ADDITION_FRAME 2 - --cmd1[0]; - AppendCrc14443a(cmd1, 3); - ReaderTransmit(cmd1, sizeof(cmd1), NULL); - len = ReaderReceive(resp); - if ( resp[2] != OPERATION_OK) { + len = DesfireAPDU(cmd, cmd_len, resp); + if ( !len ) { print_result("ERROR <--: ", resp, len); - OnError(); + OnError(2); return; } memcpy(dataout+7+7+7,resp+3,14); - // GET MASTER KEYSETTINGS - cmd1[2] = GET_KEY_SETTINGS; - AppendCrc14443a(cmd1, 3); - ReaderTransmit(cmd1, sizeof(cmd1), NULL); - len = ReaderReceive(resp); - if (len){ - memcpy(dataout+7+7+7+14,resp+3,2); - } - - - // GET MASTER KEY VERSION - AppendCrc14443a(cmd2, 4); - ReaderTransmit(cmd2, sizeof(cmd2), NULL); - len = ReaderReceive(resp); - if (len){ - memcpy(dataout+7+7+7+14+2,resp+3,1); - } - - // GET FREE MEMORY - cmd1[2] = GET_FREE_MEMORY; - AppendCrc14443a(cmd1, 3); - ReaderTransmit(cmd1, sizeof(cmd1), NULL); - len = ReaderReceive(resp); - if (len){ - memcpy(dataout+7+7+7+14+2+1,resp+3,3); - } - cmd_send(CMD_ACK,1,0,0,dataout,sizeof(dataout)); + + // reset the pcb_blocknum, + pcb_blocknum = 0; OnSuccess(); } void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno, uint8_t *datain){ - uint8_t null_key_data[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; - //uint8_t new_key_data[8] = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77 }; - int res = 0; - - desfirekey_t default_key = Desfire_des_key_new_with_version (null_key_data); + int len = 0; + //uint8_t PICC_MASTER_KEY8[8] = { 0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47}; + uint8_t PICC_MASTER_KEY16[16] = { 0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47,0x48,0x49,0x4a,0x4b,0x4c,0x4d,0x4e,0x4f }; + uint8_t null_key_data8[8] = {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}; - // res = Desfire_select_application (tags[i], aid); - if (res < 0) { - print_result("default key: ", default_key->data, 24 ); - return; - } - - return; - // pcb cid cmd key crc1 cr2 - //uint8_t cmd2[] = {0x02,0x00,GET_KEY_VERSION, 0x00, 0x00, 0x00 }; + uint8_t resp[256] = {0x00}; + uint8_t IV[16] = {0x00}; - //uint8_t* bigbuffer = mifare_get_bigbufptr(); - byte_t isOK = 1; - uint8_t resp[256]; - uint8_t key[24]; - uint8_t IV[16]; - - // första byten håller keylength. - uint8_t keylen = datain[0]; - memcpy(key, datain+1, keylen); + size_t datalen = datain[0]; - if (MF_DBGLEVEL >= 1) { - - Dbprintf("MODE: %d", mode); - Dbprintf("ALGO: %d", algo); - Dbprintf("KEYNO: %d", keyno); - Dbprintf("KEYLEN: %d", keylen); - - print_result("KEY", key, keylen); - } - - // card select - information - byte_t buf[USB_CMD_DATA_SIZE]; - iso14a_card_select_t *card = (iso14a_card_select_t*)buf; - - // test of DES on ARM side. - /* - if ( mode == 1){ - uint8_t IV[8]; - uint8_t plain[16]; - uint8_t encData[16]; + uint8_t cmd[40] = {0x00}; + uint8_t encRndB[16] = {0x00}; + uint8_t decRndB[16] = {0x00}; + uint8_t nonce[16] = {0x00}; + uint8_t both[32] = {0x00}; + uint8_t encBoth[32] = {0x00}; - uint8_t tmpData[8]; - uint8_t tmpPlain[8]; - - memset(IV, 0, 8); - memset(tmpData, 0 ,8); - memset(tmpPlain,0 ,8); - memcpy(key, datain, 8); - memcpy(plain, datain+30, 16); - - for(uint8_t i=0; i< sizeof(plain); i=i+8 ){ - - memcpy(tmpPlain, plain+i, 8); - des_enc( &tmpData, &tmpPlain, &key); - memcpy(encData+i, tmpData, 8); - } - } -*/ - - iso14a_clear_trace(); - - iso14a_set_tracing(TRUE); - - // power up the field - iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN); - - // select the card - isOK = iso14443a_select_card(resp, card, NULL); - if (isOK != 1) { - if (MF_DBGLEVEL >= 1) { - Dbprintf("CAN'T SELECT CARD, SOMETHING WENT WRONG BEFORE AUTH"); - } - OnError(); - return; - } - - LED_A_ON(); - LED_B_OFF(); - LED_C_OFF(); + InitDesfireCard(); // 3 olika sätt att authenticera. AUTH (CRC16) , AUTH_ISO (CRC32) , AUTH_AES (CRC32) // 4 olika crypto algo DES, 3DES, 3K3DES, AES @@ -222,346 +204,303 @@ void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno, uint8_t *datain // des, nyckel 0, switch (mode){ - case 1: - // if ( SendDesfireCommand(AUTHENTICATE, &keyno, resp) > 0 ){ - // // fick nonce från kortet - // } + case 1:{ + if (algo == 1) { + + uint8_t keybytes[8] = {0x00}; + uint8_t RndA[8] = {0x00}; + uint8_t RndB[8] = {0x00}; + + if (datain[1] == 0xff){ + memcpy(keybytes,null_key_data8,8); + } else{ + memcpy(keybytes, datain+1, datalen); + } + + struct desfire_key defaultkey = {0}; + desfirekey_t key = &defaultkey; + Desfire_des_key_new(keybytes, key); + + cmd[0] = AUTHENTICATE; + cmd[1] = keyno; //keynumber + len = DesfireAPDU(cmd, 2, resp); + if ( !len ) { + if (MF_DBGLEVEL >= MF_DBG_ERROR) { + DbpString("Authentication failed. Card timeout."); + } + OnError(3); + return; + } + + if ( resp[2] == 0xaf ){ + } else { + DbpString("Authetication failed. Invalid key number."); + OnError(3); + return; + } + + memcpy( encRndB, resp+3, 8); + + des_dec(&decRndB, &encRndB, key->data); + memcpy(RndB, decRndB, 8); + rol(decRndB,8); + + // This should be random + uint8_t decRndA[8] = {0x00}; + memcpy(RndA, decRndA, 8); + uint8_t encRndA[8] = {0x00}; + + des_dec(&encRndA, &decRndA, key->data); + + memcpy(both, encRndA, 8); + + for (int x = 0; x < 8; x++) { + decRndB[x] = decRndB[x] ^ encRndA[x]; + } + + des_dec(&encRndB, &decRndB, key->data); + + memcpy(both + 8, encRndB, 8); + + cmd[0] = ADDITIONAL_FRAME; + memcpy(cmd+1, both, 16 ); + + len = DesfireAPDU(cmd, 17, resp); + if ( !len ) { + if (MF_DBGLEVEL >= MF_DBG_ERROR) { + DbpString("Authentication failed. Card timeout."); + } + OnError(3); + return; + } + + if ( resp[2] == 0x00 ){ + + struct desfire_key sessionKey = {0}; + desfirekey_t skey = &sessionKey; + Desfire_session_key_new( RndA, RndB , key, skey ); + //print_result("SESSION : ", skey->data, 8); + + memcpy(encRndA, resp+3, 8); + des_dec(&encRndA, &encRndA, key->data); + rol(decRndA,8); + for (int x = 0; x < 8; x++) { + if (decRndA[x] != encRndA[x]) { + DbpString("Authetication failed. Cannot varify PICC."); + OnError(4); + return; + } + } + + //Change the selected key to a new value. + /* + + cmd[0] = CHANGE_KEY; + cmd[1] = 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); + + ComputeCrc14443(CRC_14443_A, newKey, 16, &first, &second); + memcpy(buff3, &first, 1); + memcpy(buff3 + 1, &second, 1); + + des_dec(&buff1, &buff1, skey->data); + memcpy(cmd+2,buff1,8); + + for (int x = 0; x < 8; x++) { + buff2[x] = buff2[x] ^ buff1[x]; + } + des_dec(&buff2, &buff2, skey->data); + memcpy(cmd+10,buff2,8); + + for (int x = 0; x < 8; x++) { + buff3[x] = buff3[x] ^ buff2[x]; + } + des_dec(&buff3, &buff3, skey->data); + memcpy(cmd+18,buff3,8); + + // The command always times out on the first attempt, this will retry until a response + // is recieved. + len = 0; + while(!len) { + len = DesfireAPDU(cmd,26,resp); + } + */ + + OnSuccess(); + cmd_send(CMD_ACK,1,0,0,skey->data,8); + + } else { + DbpString("Authetication failed."); + OnError(6); + return; + } + + } + } break; case 2: //SendDesfireCommand(AUTHENTICATE_ISO, &keyno, resp); break; case 3:{ + + //defaultkey + uint8_t keybytes[16] = {0x00}; + if (datain[1] == 0xff){ + memcpy(keybytes,PICC_MASTER_KEY16,16); + } else{ + memcpy(keybytes, datain+1, datalen); + } + + struct desfire_key defaultkey = {0x00}; + desfirekey_t key = &defaultkey; + Desfire_aes_key_new( keybytes, key); + AesCtx ctx; - if ( AesCtxIni(&ctx, IV, key, KEY128, CBC) < 0 ){ - if (MF_DBGLEVEL >= 1) { + if ( AesCtxIni(&ctx, IV, key->data, KEY128, CBC) < 0 ){ + if( MF_DBGLEVEL >= 4) { Dbprintf("AES context failed to init"); } - OnError(); + OnError(7); return; } - uint8_t real_cmd[6]; - real_cmd[0] = 0x90; - real_cmd[1] = 0x02; - real_cmd[2] = AUTHENTICATE_AES; - real_cmd[3] = keyno; - AppendCrc14443a(real_cmd, 2); - ReaderTransmit(real_cmd, sizeof(real_cmd), NULL); - - int len = ReaderReceive(resp); - if(!len) { - OnError(); - return; - } - - print_result("RX:", resp, len); - - enum DESFIRE_STATUS status = resp[1]; - if ( status != ADDITIONAL_FRAME) { - OnError(); + cmd[0] = AUTHENTICATE_AES; + cmd[1] = 0x00; //keynumber + len = DesfireAPDU(cmd, 2, resp); + if ( !len ) { + if (MF_DBGLEVEL >= MF_DBG_ERROR) { + DbpString("Authentication failed. Card timeout."); + } + OnError(3); return; } - // tags enc nonce - uint8_t encRndB[16]; - uint8_t decRndB[16]; - uint8_t nonce[16]; - uint8_t both[32]; - uint8_t encBoth[32]; - - memset(nonce, 0, 16); - memcpy( encRndB, resp+2, 16); - + memcpy( encRndB, resp+3, 16); + // dekryptera tagnonce. AesDecrypt(&ctx, encRndB, decRndB, 16); - rol(decRndB,16); - memcpy(both, nonce,16); memcpy(both+16, decRndB ,16 ); - AesEncrypt(&ctx, both, encBoth, 32 ); - - uint8_t real_cmd_A[36]; - real_cmd_A[0] = 0x03; - real_cmd_A[1] = ADDITIONAL_FRAME; - memcpy(real_cmd_A+2, encBoth, sizeof(encBoth) ); - AppendCrc14443a(real_cmd_A, sizeof(real_cmd_A)); - ReaderTransmit(real_cmd_A, sizeof(real_cmd_A), NULL); - - len = ReaderReceive(resp); - - print_result("Auth1a ", resp, 36); + cmd[0] = ADDITIONAL_FRAME; + memcpy(cmd+1, encBoth, 32 ); - status = resp[1]; - if ( status != OPERATION_OK) { - Dbprintf("Cmd Error: %02x Len: %d", status,len); - OnError(); + len = DesfireAPDU(cmd, 33, resp); // 1 + 32 == 33 + if ( !len ) { + if (MF_DBGLEVEL >= MF_DBG_ERROR) { + DbpString("Authentication failed. Card timeout."); + } + OnError(3); return; } - - break; - } + if ( resp[2] == 0x00 ){ + // Create AES Session key + struct desfire_key sessionKey = {0}; + desfirekey_t skey = &sessionKey; + Desfire_session_key_new( nonce, decRndB , key, skey ); + print_result("SESSION : ", skey->data, 16); + } else { + DbpString("Authetication failed."); + OnError(7); + return; + } + break; + } } - OnSuccess(resp); + OnSuccess(); + cmd_send(CMD_ACK,1,len,0,resp,len); } - -// desfire_cmd = enum DESFIRE_CMD in desfire.h -// cmd = pointer to -// dataout = point to array for response data. -int SendDesfireCommand(enum DESFIRE_CMD desfire_cmd,uint8_t *dataout, uint8_t fromscratch){ - - uint8_t resp[80]; - uint8_t len; +// 3 olika ISO sätt 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){ - if ( fromscratch){ - - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - - // power up the field - iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN); - // select the card - iso14443a_select_card(NULL, NULL, NULL); - } - - // 3 olika ISO sätt att skicka data till DESFIRE (direkt, inkapslat, inkapslat ISO) - uint8_t real_cmd[4]; - real_cmd[0] = 0x02; - real_cmd[1] = desfire_cmd; - AppendCrc14443a(real_cmd, 2); - ReaderTransmit(real_cmd, sizeof(real_cmd), NULL); - len = ReaderReceive(resp); - if(!len) - return -1; //DATA LINK ERROR - - if ( fromscratch){ - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - } - - enum DESFIRE_STATUS status = resp[1]; - //1 bytes iso, 1 byte status, in the end: 2 bytes crc - if ( status == OPERATION_OK || status == ADDITIONAL_FRAME) { - memcpy(dataout, resp+2, 2); - return len; - } - else { - Dbprintf("unexpected desfire response: %X (to %X)", status, desfire_cmd); - return -status; - } -} - - // 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); - - - /* Version - - //uint8_t versionCmd1[] = {0x02, 0x60}; - //uint8_t versionCmd2[] = {0x03, 0xaf}; - //uint8_t versionCmd3[] = {0x02, 0xaf}; - - // AUTH 1 - CMD: 0x02, 0x0A, 0x00 = Auth - // 0x02 = status byte för simpla svar?!? - // 0x0a = krypto typ - // 0x00 = key nr - //uint8_t initAuthCmdDES[] = {0x02, 0x0a, 0x00}; // DES - //uint8_t initAuthCmd3DES[] = {0x02, 0x1a, 0x00}; // 3DES - //uint8_t initAuthCmdAES[] = {0x02, 0xaa, 0x00}; // AES - // auth 1 - answer command - // 0x03 = status byte för komplexa typer? - // 0xaf = additional frame - // LEN = 1+1+32+2 = 36 - //uint8_t answerAuthCmd[34] = {0x03, 0xaf}; - - // Lägg till CRC - //AppendCrc14443a(versionCmd1,sizeof(versionCmd1)); -*/ - - // Sending commands - /*ReaderTransmit(versionCmd1,sizeof(versionCmd1)+2, NULL); - len = ReaderReceive(buffer); - print_result("Get Version 3", buffer, 9); - */ + size_t len = 0; + size_t wrappedLen = 0; + uint8_t wCmd[USB_CMD_DATA_SIZE] = {0x00}; - // for( int i = 0; i < 8; i++){ - // // Auth 1 - Request authentication - // ReaderTransmit(initAuthCmdAES,sizeof(initAuthCmdAES)+2, NULL); - // //len = ReaderReceive(buffer); - - // // 0xAE = authentication error - // if (buffer[1] == 0xae) { - // Dbprintf("Cmd Error: %02x", buffer[1]); - // OnError(); - // return; - // } - - // // tags enc nonce - // memcpy(encRndB, buffer+2, 16); - - // // dekryptera svaret från tag. - // AesDecrypt(&ctx, encRndB, decRndB, 16); - - // rol8(decRndB,16); - // memcpy(RndARndB, RndA,16); - // memcpy(RndARndB+16, decRndB ,16 ); - - // AesEncrypt(&ctx, RndARndB, encRndARndB, 32 ); - - // memcpy(answerAuthCmd+2, encRndARndB, 32); - // AppendCrc14443a(answerAuthCmd,sizeof(answerAuthCmd)); + uint8_t resp[MAX_FRAME_SIZE]; + uint8_t par[MAX_PARITY_SIZE]; - // ReaderTransmit(answerAuthCmd,sizeof(answerAuthCmd)+2, NULL); - - // len = ReaderReceive(buffer); - - // print_result("Auth1a ", buffer, 8); - // Dbprintf("Rx len: %02x", len); - - // if (buffer[1] == 0xCA) { - // Dbprintf("Cmd Error: %02x Len: %d", buffer[1],len); - // cmd_send(CMD_ACK,0,0,0,0,0); - // key[1] = i; - // AesCtxIni(&ctx, iv, key, KEY128, CBC); - // } - // } - - //des_dec(decRndB, encRndB, key); + wrappedLen = CreateAPDU( cmd, cmd_len, wCmd); - //Do crypto magic - /* - DES_ede2_cbc_encrypt(e_RndB,RndB,sizeof(e_RndB),&ks1,&ks2,&iv,0); - memcpy(RndARndB,RndA,8); - memcpy(RndARndB+8,RndB,8); - PrintAndLog(" RA+B:%s",sprint_hex(RndARndB, 16)); - DES_ede2_cbc_encrypt(RndARndB,RndARndB,sizeof(RndARndB),&ks1,&ks2,&e_RndB,1); - PrintAndLog("enc(RA+B):%s",sprint_hex(RndARndB, 16)); - */ - + if (MF_DBGLEVEL >= 4) { + print_result("WCMD <--: ", wCmd, wrappedLen); + } + ReaderTransmit( wCmd, wrappedLen, NULL); -int mifare_des_auth2(uint32_t uid, uint8_t *key, uint8_t *blockData){ + len = ReaderReceive(resp, par); - uint8_t* buffer = mifare_get_bigbufptr(); - uint8_t dcmd[19]; - - dcmd[0] = 0xAF; - memcpy(dcmd+1,key,16); - AppendCrc14443a(dcmd, 17); - - - ReaderTransmit(dcmd, sizeof(dcmd), NULL); - int len = ReaderReceive(buffer); - if(!len) { - if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Card timeout."); - len = ReaderReceive(buffer); - } - - if(len==1) { - if (MF_DBGLEVEL >= 1) { - Dbprintf("NAK - Authentication failed."); - Dbprintf("Cmd Error: %02x", buffer[0]); - } - return 1; + if( len == 0x00 ){ + if (MF_DBGLEVEL >= 4) Dbprintf("fukked"); + return FALSE; //DATA LINK ERROR } - - if (len == 11){ - if (MF_DBGLEVEL >= 1) { - Dbprintf("Auth2 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x", - buffer[0],buffer[1],buffer[2],buffer[3],buffer[4], - buffer[5],buffer[6],buffer[7],buffer[8],buffer[9], - buffer[10]); - } - return 0; + // 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 } - return 1; -} - -void MifareDES_Auth2(uint32_t arg0, uint8_t *datain){ - - return; - uint32_t cuid = arg0; - uint8_t key[16]; - - byte_t isOK = 0; - byte_t dataoutbuf[16]; - - memset(key, 0, 16); - memcpy(key, datain, 16); - - LED_A_ON(); - LED_B_OFF(); - LED_C_OFF(); - if(mifare_des_auth2(cuid, key, dataoutbuf)){ - if (MF_DBGLEVEL >= 1) Dbprintf("Authentication part2: Fail..."); - } - isOK=1; - if (MF_DBGLEVEL >= 2) DbpString("AUTH 2 FINISHED"); - - LED_B_ON(); - cmd_send(CMD_ACK,isOK,0,0,dataoutbuf,11); - LED_B_OFF(); - - // Thats it... - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - LEDsoff(); -} + memcpy(dataout, resp, len); + return len; +} // CreateAPDU -uint8_t* CreateAPDU( uint8_t *datain, size_t len){ +size_t CreateAPDU( uint8_t *datain, size_t len, uint8_t *dataout){ - len = MIN(len, USB_CMD_DATA_SIZE); + size_t cmdlen = MIN(len+4, USB_CMD_DATA_SIZE-1); + + uint8_t cmd[cmdlen]; + memset(cmd, 0, cmdlen); - uint8_t tmpcmd[len]; - uint8_t *cmd = tmpcmd; - memset(cmd, 0, len); - cmd[0] = 0x0a; - cmd[1] = 0x00; + cmd[0] = 0x0A; // 0x0A = skicka cid, 0x02 = ingen cid. Särskilda bitar // + cmd[0] |= pcb_blocknum; // OR the block number into the PCB + cmd[1] = 0x00; // CID: 0x00 //TODO: allow multiple selected cards - memcpy(cmd, datain,len); + memcpy(cmd+2, datain, len); AppendCrc14443a(cmd, len+2); - return cmd; -} - -void SelectCard(){ - - uint8_t resp[RECV_RES_SIZE]; - byte_t buf[RECV_RES_SIZE]; - memset(resp,0,sizeof(resp)); - memset(buf,0,sizeof(buf)); + memcpy(dataout, cmd, cmdlen); - iso14a_clear_trace(); - iso14a_set_tracing(TRUE); - iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN); - - // card select - information - iso14a_card_select_t *card = (iso14a_card_select_t*)buf; - byte_t isOK = iso14443a_select_card(NULL, card, NULL); - if (isOK != 1) { - if (MF_DBGLEVEL >= 1) { - Dbprintf("Can't select card"); - } - OnError(); - return; - } + 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(){ - // Deselect card by sending a s-block. the crc is precalced for speed - uint8_t cmd[] = {0xc2,0xe0,0xb4}; - ReaderTransmit(cmd, sizeof(cmd), NULL); + pcb_blocknum = 0; + ReaderTransmit(deselect_cmd, 3 , NULL); FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); LEDsoff(); } -void OnError(){ - cmd_send(CMD_ACK,0,0,0,0,0); +void OnError(uint8_t reason){ + pcb_blocknum = 0; + ReaderTransmit(deselect_cmd, 3 , NULL); + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); + cmd_send(CMD_ACK,0,reason,0,0,0); LEDsoff(); }