]> git.zerfleddert.de Git - proxmark3-svn/blobdiff - armsrc/mifaredesfire.c
CHG: some minor changes from @marshmellow42
[proxmark3-svn] / armsrc / mifaredesfire.c
index 56166777bc62d6e2806546c0b1ed22211cf0351d..6a9baeadf06ba7956def63caf66574920eb9ad5d 100644 (file)
@@ -18,22 +18,14 @@ static  uint8_t deselect_cmd[] = {0xc2,0xe0,0xb4};
 
 bool InitDesfireCard(){
 
-       // Make sure it is off.
-//     FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
-//     SpinDelay(300);
+       iso14a_card_select_t card;
        
-       byte_t cardbuf[USB_CMD_DATA_SIZE];
-       memset(cardbuf,0,sizeof(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);
+       set_tracing(TRUE);
 
-       if (!len) {
-               if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
-               OnError();
+       if (!iso14443a_select_card(NULL, &card, NULL, true, 0)) {
+               if (MF_DBGLEVEL >= MF_DBG_ERROR) DbpString("Can't select card");
+               OnError(1);
                return false;
        }
        return true;
@@ -66,9 +58,8 @@ void MifareSendCommand(uint8_t arg0, uint8_t arg1, uint8_t *datain){
                print_result(" RX    : ", datain, datalen);
        }
        
-       if ( flags & CLEARTRACE ){
-               iso14a_clear_trace();
-       }
+       if ( flags & CLEARTRACE )
+               clear_trace();
        
        if ( flags & INIT ){
                if ( !InitDesfireCard() )
@@ -76,21 +67,19 @@ 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();
+               OnError(2);
                return;
        }
        
        // reset the pcb_blocknum,
        pcb_blocknum = 0;
        
-       if ( flags & DISCONNECT ){
+       if ( flags & DISCONNECT )
                OnSuccess();
-       }
        
        cmd_send(CMD_ACK,1,len,0,resp,len);
 }
@@ -98,13 +87,9 @@ 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));
+       iso14a_card_select_t card;
+       uint8_t resp[USB_CMD_DATA_SIZE] = {0x00};
+       uint8_t dataout[USB_CMD_DATA_SIZE] = {0x00};
        
        /*
                1 = PCB                                 1
@@ -115,22 +100,18 @@ void MifareDesfireGetInformation(){
                PCB == 0x0A because sending CID byte.
                CID == 0x00 first card?         
        */
-       iso14a_clear_trace();
-       iso14a_set_tracing(TRUE);
+       clear_trace();
+       set_tracing(TRUE);
        iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
 
        // card select - information
-       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) {
-                       Dbprintf("Can't select card");
-               }
-               OnError();
+       if ( !iso14443a_select_card(NULL, &card, NULL, true, 0) ) {
+               if (MF_DBGLEVEL >= MF_DBG_ERROR) DbpString("Can't select card");
+               OnError(1);
                return;
        }
 
-       memcpy(dataout,card->uid,7);
+       memcpy(dataout, card.uid, 7);
 
        LED_A_ON();
        LED_B_OFF();
@@ -142,7 +123,7 @@ void MifareDesfireGetInformation(){
        len =  DesfireAPDU(cmd, cmd_len, resp);
        if ( !len ) {
                print_result("ERROR <--: ", resp, len); 
-               OnError();
+               OnError(2);
                return;
        }
        
@@ -155,7 +136,7 @@ void MifareDesfireGetInformation(){
        len =  DesfireAPDU(cmd, cmd_len, resp);
        if ( !len ) {
                print_result("ERROR <--: ", resp, len); 
-               OnError();
+               OnError(2);
                return;
        }       
        
@@ -167,7 +148,7 @@ void MifareDesfireGetInformation(){
        len =  DesfireAPDU(cmd, cmd_len, resp);
        if ( !len ) {
                print_result("ERROR <--: ", resp, len); 
-               OnError();
+               OnError(2);
                return;
        }
        
@@ -185,12 +166,11 @@ 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};
 
@@ -204,7 +184,7 @@ 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();
@@ -215,10 +195,221 @@ 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:{
+            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;
+            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);
+            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);
+            
+            // This should be random
+            uint8_t decRndA[8] = {0x00};
+            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);
+            
+            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);
+                
+                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]) {
+                        DbpString("Authetication failed. Cannot varify PICC.");
+                        OnError(4);
+                        return;
+                    }
+                }
+                
+                //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;
+                
+                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);
+                
+                 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);
+                
+                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();
+                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:
                        //SendDesfireCommand(AUTHENTICATE_ISO, &keyno, resp);
@@ -226,14 +417,14 @@ 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 +433,7 @@ 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 +441,10 @@ 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 +462,10 @@ 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;
                        }
                        
@@ -286,7 +477,7 @@ 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;
                        }
                        
@@ -306,24 +497,20 @@ int DesfireAPDU(uint8_t *cmd, size_t cmd_len, uint8_t *dataout){
 
        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;
+       uint8_t wCmd[USB_CMD_DATA_SIZE] = {0x00};
+       uint8_t resp[MAX_FRAME_SIZE];
+    uint8_t par[MAX_PARITY_SIZE];
        
        wrappedLen = CreateAPDU( cmd, cmd_len, wCmd);
        
-       if (MF_DBGLEVEL >= 4) {
+       if (MF_DBGLEVEL >= 4)
                print_result("WCMD <--: ", wCmd, wrappedLen);   
-       }
+
        ReaderTransmit( wCmd, wrappedLen, NULL);
 
-       len = ReaderReceive(resp, resp_par);
-       
-       if( len == 0x00 ){
-               if (MF_DBGLEVEL >= 4) {
-                       Dbprintf("fukked");
-               }
+       len = ReaderReceive(resp, par);
+       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
@@ -350,7 +537,7 @@ 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);
@@ -368,14 +555,13 @@ size_t CreateAPDU( uint8_t *datain, size_t len, uint8_t *dataout){
 void OnSuccess(){
        pcb_blocknum = 0;
        ReaderTransmit(deselect_cmd, 3 , NULL);
+       mifare_ultra_halt();
        FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
        LEDsoff();
+       set_tracing(FALSE);     
 }
 
-void OnError(){
-       pcb_blocknum = 0;
-       ReaderTransmit(deselect_cmd, 3 , NULL);
-       FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
-       cmd_send(CMD_ACK,0,0,0,0,0);
-       LEDsoff();
+void OnError(uint8_t reason){
+       cmd_send(CMD_ACK,0,reason,0,0,0);
+       OnSuccess();
 }
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