X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/06732632308cb40fba0cde7ad87bf455a2d42e50..d3a22c7dfa87bf5e21d228849a602194be4a0895:/armsrc/mifaredesfire.c diff --git a/armsrc/mifaredesfire.c b/armsrc/mifaredesfire.c index e5a2289b..155538cb 100644 --- a/armsrc/mifaredesfire.c +++ b/armsrc/mifaredesfire.c @@ -3,9 +3,10 @@ #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; @@ -24,17 +25,15 @@ bool InitDesfireCard(){ byte_t cardbuf[USB_CMD_DATA_SIZE]; memset(cardbuf,0,sizeof(cardbuf)); + iso14a_card_select_t *card = (iso14a_card_select_t*)cardbuf; iso14a_set_tracing(TRUE); iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN); - iso14a_card_select_t *card = (iso14a_card_select_t*)cardbuf; int len = iso14443a_select_card(NULL,card,NULL); if (!len) { - if (MF_DBGLEVEL >= 1) { - Dbprintf("Can't select card"); - } + if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card"); OnError(); return false; } @@ -59,7 +58,7 @@ void MifareSendCommand(uint8_t arg0, uint8_t arg1, uint8_t *datain){ */ uint8_t flags = arg0; size_t datalen = arg1; - uint8_t resp[RECV_RES_SIZE]; + uint8_t resp[RECEIVE_SIZE]; memset(resp,0,sizeof(resp)); if (MF_DBGLEVEL >= 4) { @@ -78,9 +77,9 @@ void MifareSendCommand(uint8_t arg0, uint8_t arg1, uint8_t *datain){ } int len = DesfireAPDU(datain, datalen, resp); - if (MF_DBGLEVEL >= 4) { - print_result("ERR <--: ", resp, len); - } + if (MF_DBGLEVEL >= 4) { + print_result("ERR <--: ", resp, len); + } if ( !len ) { OnError(); @@ -124,7 +123,7 @@ void MifareDesfireGetInformation(){ // card select - information iso14a_card_select_t *card = (iso14a_card_select_t*)cardbuf; byte_t isOK = iso14443a_select_card(NULL, card, NULL); - if (isOK != 1) { + if ( isOK == 0) { if (MF_DBGLEVEL >= 1) { Dbprintf("Can't select card"); } @@ -192,7 +191,7 @@ void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno, uint8_t *datain //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}; - //uint8_t* bigbuffer = mifare_get_bigbufptr(); + //uint8_t* bigbuffer = get_bigbufptr_recvrespbuf(); uint8_t resp[256] = {0x00}; uint8_t IV[16] = {0x00}; @@ -306,6 +305,49 @@ void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno, uint8_t *datain } } + //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); @@ -402,10 +444,13 @@ void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno, uint8_t *datain // dataout = pointer to response data array int DesfireAPDU(uint8_t *cmd, size_t cmd_len, uint8_t *dataout){ - uint32_t status = 0; + size_t len = 0; size_t wrappedLen = 0; uint8_t wCmd[USB_CMD_DATA_SIZE] = {0}; + uint8_t *resp = ((uint8_t *)BigBuf) + RECV_RESP_OFFSET; + uint8_t *resp_par = ((uint8_t *)BigBuf) + RECV_RESP_PAR_OFFSET; + wrappedLen = CreateAPDU( cmd, cmd_len, wCmd); if (MF_DBGLEVEL >= 4) { @@ -413,9 +458,9 @@ int DesfireAPDU(uint8_t *cmd, size_t cmd_len, uint8_t *dataout){ } ReaderTransmit( wCmd, wrappedLen, NULL); - status = ReaderReceive(dataout); + len = ReaderReceive(resp, resp_par); - if( status == 0x00){ + if( len == 0x00 ){ if (MF_DBGLEVEL >= 4) { Dbprintf("fukked"); } @@ -423,14 +468,16 @@ int DesfireAPDU(uint8_t *cmd, size_t cmd_len, uint8_t *dataout){ } // 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 (status >= 4 // PCB+CID+CRC = 4 bytes - && ((dataout[0] & 0xC0) == 0 // I-Block - || (dataout[0] & 0xD0) == 0x80) // R-Block with ACK bit set to 0 - && (dataout[0] & 0x01) == pcb_blocknum) // equal block numbers + 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 status; + + memcpy(dataout, resp, len); + return len; } // CreateAPDU @@ -443,7 +490,7 @@ size_t CreateAPDU( uint8_t *datain, size_t len, uint8_t *dataout){ 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 //FIXME: allow multiple selected cards + cmd[1] = 0x00; // CID: 0x00 //TODO: allow multiple selected cards memcpy(cmd+2, datain, len); AppendCrc14443a(cmd, len+2);