X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/5b59bf20c73825e3732185d74142c8b955e68758..e994394a40ad9c7b8e33e2fed3357d5d91ab2709:/armsrc/mifaredesfire.c diff --git a/armsrc/mifaredesfire.c b/armsrc/mifaredesfire.c index 4d68bf5f..8336d793 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 @@ -26,7 +25,7 @@ bool InitDesfireCard(){ 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) @@ -115,7 +114,7 @@ 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"); @@ -198,6 +197,10 @@ 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 @@ -205,20 +208,32 @@ 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; @@ -240,8 +255,11 @@ 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); @@ -250,14 +268,21 @@ 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); @@ -282,7 +307,12 @@ 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]) { @@ -295,6 +325,8 @@ 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; @@ -312,6 +344,48 @@ 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); @@ -333,18 +407,20 @@ 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: @@ -416,6 +492,7 @@ void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno, uint8_t *datain OnError(7); return; } + break; } } @@ -494,13 +571,10 @@ 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(); }