X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/d52e4e881910964f151e0ea51dd5621e6ab6315e..6af88242eb458bad91c77b424b03bf19ecce5da1:/armsrc/mifaredesfire.c?ds=sidebyside diff --git a/armsrc/mifaredesfire.c b/armsrc/mifaredesfire.c index 75119322..57376151 100644 --- a/armsrc/mifaredesfire.c +++ b/armsrc/mifaredesfire.c @@ -1,4 +1,5 @@ #include "mifaredesfire.h" +#include "des.h" #define MAX_APPLICATION_COUNT 28 #define MAX_FILE_COUNT 16 @@ -17,13 +18,9 @@ static uint8_t deselect_cmd[] = {0xc2,0xe0,0xb4}; //static uint8_t __res[MAX_FRAME_SIZE]; bool InitDesfireCard(){ - - // Make sure it is off. -// FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); -// SpinDelay(300); - byte_t cardbuf[USB_CMD_DATA_SIZE]; - memset(cardbuf,0,sizeof(cardbuf)); + byte_t cardbuf[USB_CMD_DATA_SIZE] = {0x00}; + iso14a_card_select_t *card = (iso14a_card_select_t*)cardbuf; iso14a_set_tracing(TRUE); @@ -32,8 +29,9 @@ bool InitDesfireCard(){ int len = iso14443a_select_card(NULL,card,NULL); if (!len) { - if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card"); - OnError(); + if (MF_DBGLEVEL >= MF_DBG_ERROR) + Dbprintf("Can't select card"); + OnError(1); return false; } return true; @@ -81,7 +79,7 @@ void MifareSendCommand(uint8_t arg0, uint8_t arg1, uint8_t *datain){ } if ( !len ) { - OnError(); + OnError(2); return; } @@ -98,13 +96,9 @@ void MifareSendCommand(uint8_t arg0, uint8_t arg1, uint8_t *datain){ void MifareDesfireGetInformation(){ int len = 0; - uint8_t resp[USB_CMD_DATA_SIZE]; - uint8_t dataout[USB_CMD_DATA_SIZE]; - byte_t cardbuf[USB_CMD_DATA_SIZE]; - - memset(resp,0,sizeof(resp)); - memset(dataout,0, sizeof(dataout)); - memset(cardbuf,0,sizeof(cardbuf)); + 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 @@ -123,10 +117,10 @@ void MifareDesfireGetInformation(){ iso14a_card_select_t *card = (iso14a_card_select_t*)cardbuf; byte_t isOK = iso14443a_select_card(NULL, card, NULL); if ( isOK == 0) { - if (MF_DBGLEVEL >= 1) { + if (MF_DBGLEVEL >= MF_DBG_ERROR) { Dbprintf("Can't select card"); } - OnError(); + OnError(1); return; } @@ -142,7 +136,7 @@ void MifareDesfireGetInformation(){ len = DesfireAPDU(cmd, cmd_len, resp); if ( !len ) { print_result("ERROR <--: ", resp, len); - OnError(); + OnError(2); return; } @@ -155,7 +149,7 @@ void MifareDesfireGetInformation(){ len = DesfireAPDU(cmd, cmd_len, resp); if ( !len ) { print_result("ERROR <--: ", resp, len); - OnError(); + OnError(2); return; } @@ -167,7 +161,7 @@ void MifareDesfireGetInformation(){ len = DesfireAPDU(cmd, cmd_len, resp); if ( !len ) { print_result("ERROR <--: ", resp, len); - OnError(); + OnError(2); return; } @@ -185,12 +179,11 @@ void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno, uint8_t *datain 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_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}; - //uint8_t* bigbuffer = get_bigbufptr_recvrespbuf(); uint8_t resp[256] = {0x00}; uint8_t IV[16] = {0x00}; @@ -204,10 +197,6 @@ void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno, uint8_t *datain uint8_t encBoth[32] = {0x00}; 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 @@ -215,10 +204,148 @@ 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); @@ -226,14 +353,14 @@ void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno, uint8_t *datain case 3:{ //defaultkey - uint8_t keybytes[16]; + 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 = {0}; + struct desfire_key defaultkey = {0x00}; desfirekey_t key = &defaultkey; Desfire_aes_key_new( keybytes, key); @@ -242,7 +369,7 @@ void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno, uint8_t *datain if( MF_DBGLEVEL >= 4) { Dbprintf("AES context failed to init"); } - OnError(); + OnError(7); return; } @@ -250,10 +377,10 @@ void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno, uint8_t *datain cmd[1] = 0x00; //keynumber len = DesfireAPDU(cmd, 2, resp); if ( !len ) { - if (MF_DBGLEVEL >= 1) { + if (MF_DBGLEVEL >= MF_DBG_ERROR) { DbpString("Authentication failed. Card timeout."); } - OnError(); + OnError(3); return; } @@ -271,10 +398,10 @@ void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno, uint8_t *datain len = DesfireAPDU(cmd, 33, resp); // 1 + 32 == 33 if ( !len ) { - if (MF_DBGLEVEL >= 1) { + if (MF_DBGLEVEL >= MF_DBG_ERROR) { DbpString("Authentication failed. Card timeout."); } - OnError(); + OnError(3); return; } @@ -286,10 +413,9 @@ void MifareDES_Auth1(uint8_t mode, uint8_t algo, uint8_t keyno, uint8_t *datain print_result("SESSION : ", skey->data, 16); } else { DbpString("Authetication failed."); - OnError(); + OnError(7); return; } - break; } } @@ -372,10 +498,10 @@ void OnSuccess(){ LEDsoff(); } -void OnError(){ +void OnError(uint8_t reason){ pcb_blocknum = 0; ReaderTransmit(deselect_cmd, 3 , NULL); FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - cmd_send(CMD_ACK,0,0,0,0,0); + cmd_send(CMD_ACK,0,reason,0,0,0); LEDsoff(); }