X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/c068ebb78f2e4070fcf1a604df0d7088374b60c6..ce211cef39604f6075673c90881d12f19e1614ef:/armsrc/mifaredesfire.c diff --git a/armsrc/mifaredesfire.c b/armsrc/mifaredesfire.c index fb486477..c5e42277 100644 --- a/armsrc/mifaredesfire.c +++ b/armsrc/mifaredesfire.c @@ -1,5 +1,4 @@ #include "mifaredesfire.h" -#include "des.h" #include "BigBuf.h" #define MAX_APPLICATION_COUNT 28 @@ -19,15 +18,14 @@ static uint8_t deselect_cmd[] = {0xc2,0xe0,0xb4}; //static uint8_t __res[MAX_FRAME_SIZE]; bool InitDesfireCard(){ - - byte_t cardbuf[USB_CMD_DATA_SIZE] = {0x00}; - iso14a_card_select_t *card = (iso14a_card_select_t*)cardbuf; - - set_tracing(TRUE); 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); + int len = iso14443a_select_card(NULL,card,NULL,true,0); if (!len) { if (MF_DBGLEVEL >= MF_DBG_ERROR) @@ -65,9 +63,8 @@ void MifareSendCommand(uint8_t arg0, uint8_t arg1, uint8_t *datain){ print_result(" RX : ", datain, datalen); } - if ( flags & CLEARTRACE ){ + if ( flags & CLEARTRACE ) clear_trace(); - } if ( flags & INIT ){ if ( !InitDesfireCard() ) @@ -75,9 +72,8 @@ void MifareSendCommand(uint8_t arg0, uint8_t arg1, uint8_t *datain){ } int len = DesfireAPDU(datain, datalen, resp); - if (MF_DBGLEVEL >= 4) { + if (MF_DBGLEVEL >= 4) print_result("ERR <--: ", resp, len); - } if ( !len ) { OnError(2); @@ -87,9 +83,8 @@ void MifareSendCommand(uint8_t arg0, uint8_t arg1, uint8_t *datain){ // reset the pcb_blocknum, pcb_blocknum = 0; - if ( flags & DISCONNECT ){ + if ( flags & DISCONNECT ) OnSuccess(); - } cmd_send(CMD_ACK,1,len,0,resp,len); } @@ -116,7 +111,7 @@ void MifareDesfireGetInformation(){ // card select - information iso14a_card_select_t *card = (iso14a_card_select_t*)cardbuf; - byte_t isOK = iso14443a_select_card(NULL, card, NULL); + byte_t isOK = iso14443a_select_card(NULL, card, NULL, true, 0); if ( isOK == 0) { if (MF_DBGLEVEL >= MF_DBG_ERROR) { Dbprintf("Can't select card"); @@ -199,6 +194,10 @@ void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno, uint8_t *datain InitDesfireCard(); + LED_A_ON(); + LED_B_OFF(); + LED_C_OFF(); + // 3 olika sätt att authenticera. AUTH (CRC16) , AUTH_ISO (CRC32) , AUTH_AES (CRC32) // 4 olika crypto algo DES, 3DES, 3K3DES, AES // 3 olika kommunikations sätt, PLAIN,MAC,CRYPTO @@ -206,20 +205,32 @@ void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno, uint8_t *datain // des, nyckel 0, switch (mode){ case 1:{ - if (algo == 1) { - - uint8_t keybytes[8] = {0x00}; + uint8_t keybytes[16]; uint8_t RndA[8] = {0x00}; uint8_t RndB[8] = {0x00}; + if (algo == 2) { if (datain[1] == 0xff){ + memcpy(keybytes,PICC_MASTER_KEY16,16); + } else { + memcpy(keybytes, datain+1, datalen); + } + } else { + if (algo == 1) { + 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; + + if (algo == 2) + Desfire_3des_key_new_with_version(keybytes, key); + else if (algo ==1) Desfire_des_key_new(keybytes, key); cmd[0] = AUTHENTICATE; @@ -241,8 +252,11 @@ void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno, uint8_t *datain } memcpy( encRndB, resp+3, 8); - + if (algo == 2) + tdes_dec(&decRndB, &encRndB, key->data); + else if (algo == 1) des_dec(&decRndB, &encRndB, key->data); + memcpy(RndB, decRndB, 8); rol(decRndB,8); @@ -251,14 +265,21 @@ void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno, uint8_t *datain memcpy(RndA, decRndA, 8); uint8_t encRndA[8] = {0x00}; + if (algo == 2) + tdes_dec(&encRndA, &decRndA, key->data); + else if (algo == 1) des_dec(&encRndA, &decRndA, key->data); memcpy(both, encRndA, 8); for (int x = 0; x < 8; x++) { decRndB[x] = decRndB[x] ^ encRndA[x]; + } + if (algo == 2) + tdes_dec(&encRndB, &decRndB, key->data); + else if (algo == 1) des_dec(&encRndB, &decRndB, key->data); memcpy(both + 8, encRndB, 8); @@ -283,7 +304,12 @@ void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno, uint8_t *datain //print_result("SESSION : ", skey->data, 8); memcpy(encRndA, resp+3, 8); + + if (algo == 2) + tdes_dec(&encRndA, &encRndA, key->data); + else if (algo == 1) des_dec(&encRndA, &encRndA, key->data); + rol(decRndA,8); for (int x = 0; x < 8; x++) { if (decRndA[x] != encRndA[x]) { @@ -296,6 +322,8 @@ void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno, uint8_t *datain //Change the selected key to a new value. /* + // Current key is a 3DES key, change it to a DES key + if (algo == 2) { cmd[0] = CHANGE_KEY; cmd[1] = keyno; @@ -313,6 +341,48 @@ void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno, uint8_t *datain 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+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); + } + + } else { + // Current key is a DES key, change it to a 3DES key + if (algo == 1) { + cmd[0] = CHANGE_KEY; + cmd[1] = 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); + + 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); @@ -334,18 +404,20 @@ void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno, uint8_t *datain while(!len) { len = DesfireAPDU(cmd,26,resp); } + } + } */ OnSuccess(); + if (algo == 2) + cmd_send(CMD_ACK,1,0,0,skey->data,16); + else if (algo == 1) cmd_send(CMD_ACK,1,0,0,skey->data,8); - } else { DbpString("Authetication failed."); OnError(6); return; } - - } } break; case 2: @@ -417,6 +489,7 @@ void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno, uint8_t *datain OnError(7); return; } + break; } } @@ -447,10 +520,8 @@ int DesfireAPDU(uint8_t *cmd, size_t cmd_len, uint8_t *dataout){ len = ReaderReceive(resp, par); - if( len == 0x00 ){ - if (MF_DBGLEVEL >= 4) { - Dbprintf("fukked"); - } + 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 @@ -497,13 +568,10 @@ void OnSuccess(){ ReaderTransmit(deselect_cmd, 3 , NULL); FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); LEDsoff(); + set_tracing(FALSE); } 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(); + OnSuccess(); }