From: Blaine Forbort Date: Thu, 1 Jan 2015 18:41:14 +0000 (-0800) Subject: Merge remote-tracking branch 'origin/DESFireAuth' X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/commitdiff_plain/23b80a733436e88426c2b857950674768eb2b8a2?hp=-c Merge remote-tracking branch 'origin/DESFireAuth' --- 23b80a733436e88426c2b857950674768eb2b8a2 diff --combined armsrc/mifaredesfire.c index 0d8de438,acb16c05..3e03ee47 --- a/armsrc/mifaredesfire.c +++ b/armsrc/mifaredesfire.c @@@ -1,11 -1,11 +1,12 @@@ #include "mifaredesfire.h" + #include "des.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; @@@ -59,7 -59,7 +60,7 @@@ void MifareSendCommand(uint8_t arg0, ui */ 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 -78,9 +79,9 @@@ } 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 -124,7 +125,7 @@@ 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"); } @@@ -187,12 -187,12 +188,12 @@@ void MifareDES_Auth1(uint8_t mode, uint 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 = mifare_get_bigbufptr(); + //uint8_t* bigbuffer = get_bigbufptr_recvrespbuf(); uint8_t resp[256] = {0x00}; uint8_t IV[16] = {0x00}; @@@ -217,10 -217,149 +218,149 @@@ // 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]; + 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 >= 1) { + DbpString("Authentication failed. Card timeout."); + } + OnError(); + return; + } + + if ( resp[2] == 0xaf ){ + } else { + DbpString("Authetication failed. Invalid key number."); + OnError(); + 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 >= 1) { + DbpString("Authentication failed. Card timeout."); + } + OnError(); + 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(); + 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(); + return; + } + + } + } break; case 2: //SendDesfireCommand(AUTHENTICATE_ISO, &keyno, resp); @@@ -306,13 -445,10 +446,13 @@@ // 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) { @@@ -320,9 -456,9 +460,9 @@@ } ReaderTransmit( wCmd, wrappedLen, NULL); - status = ReaderReceive(dataout); + len = ReaderReceive(resp, resp_par); - if( status == 0x00){ + if( len == 0x00 ){ if (MF_DBGLEVEL >= 4) { Dbprintf("fukked"); } @@@ -330,16 -466,14 +470,16 @@@ } // 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