Bugfix DNIE

FINEID Support

git-svn-id: https://joinup.ec.europa.eu/svn/mocca/trunk@848 8a26b1a7-26f0-462f-b9ef-d0e30c41f5a4

16 files changed, 1126 insertions, 272 deletions

diff --git a/smcc/src/main/java/at/gv/egiz/smcc/CIOCertificateDirectory.java b/smcc/src/main/java/at/gv/egiz/smcc/CIOCertificateDirectory.java
index 33dd99bb..a9886e80 100644
--- a/smcc/src/main/java/at/gv/egiz/smcc/CIOCertificateDirectory.java
+++ b/smcc/src/main/java/at/gv/egiz/smcc/CIOCertificateDirectory.java
@@ -59,12 +59,8 @@ public class CIOCertificateDirectory {
      */
     public void selectAndRead(CardChannel channel) throws CardException, SignatureCardException, IOException {
 
-        CommandAPDU cmd = new CommandAPDU(0x00, 0xA4, 0x02, ISO7816Utils.P2_FCP, fid, 256);
-        ResponseAPDU resp = channel.transmit(cmd);
-
-        byte[] fcx = new TLVSequence(resp.getBytes()).getValue(ISO7816Utils.TAG_FCP);
-        byte[] fd = new TLVSequence(fcx).getValue(0x82);
-
+    	byte[] fd = executeSelect(channel);
+    	
         if ((fd[0] & 0x04) > 0) {
         	
         	readCIOCertificatesFromRecords(channel, fd);
@@ -75,6 +71,17 @@ public class CIOCertificateDirectory {
         }
     }
 
+    protected byte[] executeSelect(CardChannel channel) throws CardException {
+    	
+        CommandAPDU cmd = new CommandAPDU(0x00, 0xA4, 0x02, ISO7816Utils.P2_FCP, fid, 256);
+        ResponseAPDU resp = channel.transmit(cmd);
+
+        byte[] fcx = new TLVSequence(resp.getBytes()).getValue(ISO7816Utils.TAG_FCP);
+        byte[] fd = new TLVSequence(fcx).getValue(0x82);
+        
+        return fd;
+    }
+    
     protected void readCIOCertificatesFromRecords(CardChannel channel, byte[] fd) throws CardException, SignatureCardException, IOException {
     	
         for (int r = 1; r < fd[fd.length - 1]; r++) {
@@ -92,7 +99,6 @@ public class CIOCertificateDirectory {
     
     protected void readCIOCertificatesFromTransparentFile(CardChannel channel) throws CardException, SignatureCardException, IOException {
     	
-//        byte[] ef = ISO7816Utils.readTransparentFile(channel, -1);
     	byte[] ef = doReadTransparentFile(channel);
     	
         int i = 0;
@@ -132,7 +138,7 @@ public class CIOCertificateDirectory {
         cioCert.setiD(x509Certificate.getElementAt(1).getElementAt(0).gvByteArray());
 
         //read CONTEXTSPECIFIC manually
-        byte[] ctxSpecific = x509Certificate.getElementAt(2).getEncoded();
+        byte[] ctxSpecific = x509Certificate.getElementAt(x509Certificate.getSize()-1).getEncoded();
         if ((ctxSpecific[0] & 0xff) == 0xa1) {
             int ll = ((ctxSpecific[1] & 0xf0) == 0x80)
                     ? (ctxSpecific[1] & 0x0f) + 2 : 2;
diff --git a/smcc/src/main/java/at/gv/egiz/smcc/DNIeSecuredChannel.java b/smcc/src/main/java/at/gv/egiz/smcc/DNIeSecuredChannel.java
index 92ef7f11..858a6cc5 100644
--- a/smcc/src/main/java/at/gv/egiz/smcc/DNIeSecuredChannel.java
+++ b/smcc/src/main/java/at/gv/egiz/smcc/DNIeSecuredChannel.java
@@ -186,11 +186,13 @@ public class DNIeSecuredChannel extends T0CardChannel {
 

 		super(channel);

 		this.established = false;

-		

+

 		try {

+

 			this.establish();

+

 		} catch (CardException e) {

-			

+

 			log.error("Error establishing secure channel with card.", e);

 		}

 	}

@@ -199,6 +201,9 @@ public class DNIeSecuredChannel extends T0CardChannel {
 

 		log.trace("Try to set up secure channel to card..");

 

+		// select master file

+		executeSelectMasterFile();

+

 		// get chip info

 		this.snIcc = executeGetChipInfo();

 

@@ -230,42 +235,43 @@ public class DNIeSecuredChannel extends T0CardChannel {
 	@Override

 	public int transmit(ByteBuffer command, ByteBuffer response)

 			throws CardException {

-		

+

 		byte[] commandAPDU = new byte[command.remaining()];

-		for(int i=0; i<commandAPDU.length; i++) {

-			

+		for (int i = 0; i < commandAPDU.length; i++) {

+

 			commandAPDU[i] = command.get();

 		}

-		

+

 		CommandAPDU apdu = new CommandAPDU(commandAPDU);

 		ResponseAPDU resp = transmit(apdu);

-		

+

 		byte[] responseData = resp.getBytes();

-		for(int i=0; i<responseData.length; i++) {

-			

+		for (int i = 0; i < responseData.length; i++) {

+

 			response.put(responseData[i]);

 		}

-		

+

 		return responseData.length;

 	}

 

 	@Override

 	public ResponseAPDU transmit(CommandAPDU apdu) throws CardException {

 

-		if(!this.established) {

-			

+		if (!this.established) {

+

 			this.establish();

 		}

-		

+

 		byte[] plainAPDUData = apdu.getBytes();

 		byte[] securedAPDUData = secureAPDU(plainAPDUData);

 

 		CommandAPDU securedAPDU = new CommandAPDU(securedAPDUData);

 		ResponseAPDU securedResp = super.transmit(securedAPDU);

 

-		byte[] respData = verifyAndDecryptSecuredResponseAPDU(securedResp.getData());

+		byte[] respData = verifyAndDecryptSecuredResponseAPDU(securedResp

+				.getData());

 		ResponseAPDU resp = new ResponseAPDU(respData);

-		

+

 		return resp;

 	}

 

@@ -369,19 +375,42 @@ public class DNIeSecuredChannel extends T0CardChannel {
 

 		if (resp.getSW() != 0x9000) {

 

-			log.error("Error selecting DF or EF: " + Integer.toHexString(resp.getSW()));

+			log.error("Error selecting DF or EF: "

+					+ Integer.toHexString(resp.getSW()));

 			throw new CardException("Unexpected response to Select Command: "

 					+ Integer.toHexString(resp.getSW()));

 		}

 

 		return resp.getData();

+	}

+

+	private void executeSelectMasterFile() throws CardException {

 

+		byte[] apdu = new byte[ESDNIeCard.MASTER_FILE_ID.length + 5];

+		apdu[0] = (byte) 0x00;

+		apdu[1] = (byte) 0xA4;

+		apdu[2] = (byte) 0x04;

+		apdu[3] = (byte) 0x00;

+		apdu[4] = (byte) ESDNIeCard.MASTER_FILE_ID.length;

+		System.arraycopy(ESDNIeCard.MASTER_FILE_ID, 0, apdu, 5,

+				ESDNIeCard.MASTER_FILE_ID.length);

+

+		CommandAPDU command = new CommandAPDU(apdu);

+		ResponseAPDU resp = super.transmit(command);

+

+		if (resp.getSW() != 0x9000) {

+

+			log.error("Error selecting master file: "

+					+ Integer.toHexString(resp.getSW()));

+			throw new CardException("Error selecting master file: "

+					+ Integer.toHexString(resp.getSW()));

+		}

 	}

 

 	private void verifyCertificates() throws CardException {

 

 		// This method verifies the card's component and intermediate

-		// certificates cryptographically only.

+		// certificates cryptographically only (no revocation checking).

 

 		RSAPublicKey rootPubKey = DNIeCryptoUtil.createRSAPublicKey(

 				ROOT_CA_MODULO, ROOT_CA_PUBEXP);

@@ -417,7 +446,7 @@ public class DNIeSecuredChannel extends T0CardChannel {
 		executePerformSecurityOperation(C_CV_IFD);

 

 		// MSE - select keys

-		executeManageSecurityEnvironment((byte) 0xC1, (byte) 0xA4, KEY_SELECTOR);		

+		executeManageSecurityEnvironment((byte) 0xC1, (byte) 0xA4, KEY_SELECTOR);

 

 	}

 

@@ -431,7 +460,8 @@ public class DNIeSecuredChannel extends T0CardChannel {
 

 		if (resp.getSW() != 0x9000) {

 

-			log.error("Error executing Manage Security Environment: " + Integer.toHexString(resp.getSW()));

+			log.error("Error executing Manage Security Environment: "

+					+ Integer.toHexString(resp.getSW()));

 			throw new CardException(

 					"Unexpected response from card during preparation of secure channel credentials: "

 							+ Integer.toHexString(resp.getSW()));

@@ -448,7 +478,8 @@ public class DNIeSecuredChannel extends T0CardChannel {
 

 		if (resp.getSW() != 0x9000) {

 

-			log.error("Error executing Perform Security Operation: " + Integer.toHexString(resp.getSW()));

+			log.error("Error executing Perform Security Operation: "

+					+ Integer.toHexString(resp.getSW()));

 			throw new CardException(

 					"Unexpected response from card during preparation of secure channel credentials: "

 							+ Integer.toHexString(resp.getSW()));

@@ -477,8 +508,9 @@ public class DNIeSecuredChannel extends T0CardChannel {
 		log.trace("Internal Authentiction succeeded: " + ok);

 

 		if (!ok) {

-			

-			log.error("Internal authentication failed - unable to sucessfully verify card response.");

+

+			log

+					.error("Internal authentication failed - unable to sucessfully verify card response.");

 			throw new CardException("Internal authentication failed");

 		}

 

@@ -500,7 +532,8 @@ public class DNIeSecuredChannel extends T0CardChannel {
 

 		} else {

 

-			log.error("Error sending terminal challenge to card: " + Integer.toHexString(resp.getSW()));

+			log.error("Error sending terminal challenge to card: "

+					+ Integer.toHexString(resp.getSW()));

 			throw new CardException("Invalid response to terminal challenge: "

 					+ Integer.toHexString(resp.getSW()));

 		}

@@ -541,7 +574,8 @@ public class DNIeSecuredChannel extends T0CardChannel {
 

 		if (sig == null) {

 

-			log.error("Error verifying card response - decryption result is null");

+			log

+					.error("Error verifying card response - decryption result is null");

 			throw new CardException("Invalid decryption result: null.");

 		} else {

 

@@ -622,12 +656,13 @@ public class DNIeSecuredChannel extends T0CardChannel {
 	private void performExternalAuthentication() throws CardException {

 

 		log.trace("Performing external authentication.");

-		

+

 		byte[] cardChallenge = executeRequestCardChallenge();

 

 		this.rndIcc = cardChallenge;

 

 		byte[] prnd2 = DNIeCryptoUtil.getRandomBytes(this.prndLength);

+

 		byte[] kIfd = DNIeCryptoUtil.getRandomBytes(32);

 

 		// compute hash

@@ -702,9 +737,9 @@ public class DNIeSecuredChannel extends T0CardChannel {
 		if (executeExternalAuthenticate(authData)) {

 

 			log.trace("External authentication succeeded.");

-			this.kifd = kIfd;			

+			this.kifd = kIfd;

 		} else {

-			log.error("Error performing external authentication.");

+			log.error("Error performing external authentication");

 			throw new CardException("External Authentication failed.");

 		}

 

@@ -718,7 +753,8 @@ public class DNIeSecuredChannel extends T0CardChannel {
 

 		if (resp.getSW() != 0x9000) {

 

-			log.error("Error requesting challenge from card: " + Integer.toHexString(resp.getSW()));

+			log.error("Error requesting challenge from card: "

+					+ Integer.toHexString(resp.getSW()));

 			throw new CardException(

 					"Invalid response from card upon challenge request: "

 							+ Integer.toHexString(resp.getSW()));

@@ -734,6 +770,9 @@ public class DNIeSecuredChannel extends T0CardChannel {
 				(byte) 0x00, (byte) 0x00, authData);

 		ResponseAPDU resp = super.transmit(command);

 

+		log.trace("Card answer to EXTERNL AUTHENTICATE: "

+				+ Integer.toHexString(resp.getSW()));

+

 		return resp.getSW() == 0x9000;

 	}

 

@@ -741,7 +780,8 @@ public class DNIeSecuredChannel extends T0CardChannel {
 

 		if (this.kicc == null || this.kifd == null) {

 

-			log.error("Error generating channel keys - required key data is null.");

+			log

+					.error("Error generating channel keys - required key data is null.");

 			throw new CardException(

 					"Required data for deriving keys not available.");

 		}

@@ -793,52 +833,49 @@ public class DNIeSecuredChannel extends T0CardChannel {
 		System.arraycopy(this.rndIfd, this.rndIfd.length - 4, this.ssc, 4, 4);

 	}

 

-	

 	private byte[] secureAPDUWithoutData(byte[] apdu) throws CardException {

-		

-		if(apdu.length < 4 || apdu.length > 5) {

-			

-			log.error("Error securing APDU - invalid APDU length: " + apdu.length);

+

+		if (apdu.length < 4 || apdu.length > 5) {

+

+			log.error("Error securing APDU - invalid APDU length: "

+					+ apdu.length);

 			throw new CardException("Invalid APDU length.");

 		}

-		

+

 		boolean leAvailable = apdu.length == 5;

 

 		byte encCLA = (byte) (apdu[0] | (byte) 0x0C);

-		byte[] encHeader = new byte[] { encCLA, apdu[1], apdu[2],

-				apdu[3] };

+		byte[] encHeader = new byte[] { encCLA, apdu[1], apdu[2], apdu[3] };

 		byte[] paddedHeader = DNIeCryptoUtil.applyPadding(BLOCK_LENGTH,

 				encHeader);

 

 		int leFieldLen;

 		byte[] leField = null;

-		if(leAvailable) {

+		if (leAvailable) {

 			leField = new byte[3];

 			leField[0] = (byte) 0x97;

 			leField[1] = (byte) 0x01;

 			leField[2] = apdu[4];

 			leFieldLen = leField.length;

 		} else {

-			

+

 			leFieldLen = 0;

 		}

 

 		byte[] macData = new byte[paddedHeader.length + leFieldLen];

-		System.arraycopy(paddedHeader, 0, macData, 0,

-				paddedHeader.length);

-		

-		if(leAvailable) {

+		System.arraycopy(paddedHeader, 0, macData, 0, paddedHeader.length);

+

+		if (leAvailable) {

 			System.arraycopy(leField, 0, macData, paddedHeader.length,

 					leField.length);

-			

-			macData = DNIeCryptoUtil.applyPadding(

-					BLOCK_LENGTH, macData);			

+

+			macData = DNIeCryptoUtil.applyPadding(BLOCK_LENGTH, macData);

 		}

 

 		incrementSSC();

 

-		byte[] mac = DNIeCryptoUtil.calculateAPDUMAC(macData,

-				kMac, this.ssc, BLOCK_LENGTH);

+		byte[] mac = DNIeCryptoUtil.calculateAPDUMAC(macData, kMac, this.ssc,

+				BLOCK_LENGTH);

 

 		byte[] encapsulatedMac = new byte[mac.length + 2];

 		encapsulatedMac[0] = (byte) 0x8E;

@@ -852,28 +889,28 @@ public class DNIeSecuredChannel extends T0CardChannel {
 		completeMessage[2] = apdu[2];

 		completeMessage[3] = apdu[3];

 		completeMessage[4] = (byte) (encapsulatedMac.length + leFieldLen);

-		

-		if(leAvailable) {

-			System

-					.arraycopy(leField, 0, completeMessage, 5,

-							leField.length);

+

+		if (leAvailable) {

+			System.arraycopy(leField, 0, completeMessage, 5, leField.length);

 		}

-		

-		System.arraycopy(encapsulatedMac, 0, completeMessage,

-				5 + leFieldLen, encapsulatedMac.length);

 

-		return completeMessage;		

-		

+		System.arraycopy(encapsulatedMac, 0, completeMessage, 5 + leFieldLen,

+				encapsulatedMac.length);

+

+		return completeMessage;

+

 	}

-	

+

 	private byte[] secureAPDUWithData(byte[] apdu) throws CardException {

 

-		if(apdu.length < 6) {

-			

-			log.error("Error securing APDU - invalid APDU length: " + apdu.length);

-			throw new CardException("Error securing APDU - invalid APDU length: " + apdu.length);

+		if (apdu.length < 6) {

+

+			log.error("Error securing APDU - invalid APDU length: "

+					+ apdu.length);

+			throw new CardException(

+					"Error securing APDU - invalid APDU length: " + apdu.length);

 		}

-		

+

 		byte cla = apdu[0];

 		byte ins = apdu[1];

 		byte p1 = apdu[2];

@@ -881,23 +918,24 @@ public class DNIeSecuredChannel extends T0CardChannel {
 		byte lc = apdu[4];

 

 		boolean leAvailable;

-		if(apdu.length == lc + 5 + 1) {

-			

+		if (apdu.length == lc + 5 + 1) {

+

 			leAvailable = true;

-		} else if(apdu.length != lc + 5) {

-			

-			log.error("Error securing APDU - invalid APDU length: " + apdu.length);

+		} else if (apdu.length != lc + 5) {

+

+			log.error("Error securing APDU - invalid APDU length: "

+					+ apdu.length);

 			throw new CardException("Invalid APDU length or format.");

 		} else {

-			

+

 			leAvailable = false;

 		}

-		

+

 		byte[] leField = null;

-		if(leAvailable) {

-		    

-			byte le = apdu[apdu.length-1];

-			

+		if (leAvailable) {

+

+			byte le = apdu[apdu.length - 1];

+

 			leField = new byte[3];

 			leField[0] = (byte) 0x97;

 			leField[1] = (byte) 0x01;

@@ -942,14 +980,17 @@ public class DNIeSecuredChannel extends T0CardChannel {
 		System.arraycopy(encapsulated, 0, headerAndData, paddedHeader.length,

 				encapsulated.length);

 

-		if(leAvailable) {

+		if (leAvailable) {

 			byte[] macData = new byte[headerAndData.length + leField.length];

-			System.arraycopy(headerAndData, 0, macData, 0, headerAndData.length);

-			System.arraycopy(leField, 0, macData, headerAndData.length, leField.length);

-			

+			System

+					.arraycopy(headerAndData, 0, macData, 0,

+							headerAndData.length);

+			System.arraycopy(leField, 0, macData, headerAndData.length,

+					leField.length);

+

 			headerAndData = macData;

 		}

-		

+

 		byte[] paddedHeaderAndData = DNIeCryptoUtil.applyPadding(BLOCK_LENGTH,

 				headerAndData);

 

@@ -964,34 +1005,35 @@ public class DNIeSecuredChannel extends T0CardChannel {
 		System.arraycopy(mac, 0, encapsulatedMac, 2, mac.length);

 

 		int leFieldLen;

-		if(leAvailable) {

+		if (leAvailable) {

 			leFieldLen = leField.length;

 		} else {

 			leFieldLen = 0;

 		}

-		

+

 		byte[] completeMessage = new byte[5 + encapsulated.length

 				+ encapsulatedMac.length + leFieldLen];

 		completeMessage[0] = encCLA;

 		completeMessage[1] = ins;

 		completeMessage[2] = p1;

 		completeMessage[3] = p2;

-		

+

 		completeMessage[4] = (byte) (encapsulated.length + leFieldLen + encapsulatedMac.length);

 		System.arraycopy(encapsulated, 0, completeMessage, 5,

 				encapsulated.length);

-		

-		if(leAvailable) {

-			System.arraycopy(leField, 0, completeMessage, 5 + encapsulated.length, leFieldLen);

+

+		if (leAvailable) {

+			System.arraycopy(leField, 0, completeMessage,

+					5 + encapsulated.length, leFieldLen);

 		}

-		

-		System.arraycopy(encapsulatedMac, 0, completeMessage,

-				5 + encapsulated.length + leFieldLen, encapsulatedMac.length);

 

-		return completeMessage;	

+		System.arraycopy(encapsulatedMac, 0, completeMessage, 5

+				+ encapsulated.length + leFieldLen, encapsulatedMac.length);

+

+		return completeMessage;

 

 	}

-	

+

 	private byte[] secureAPDU(byte[] apdu) throws CardException {

 

 		if (apdu == null || apdu.length < 4) {

@@ -1005,12 +1047,12 @@ public class DNIeSecuredChannel extends T0CardChannel {
 			return secureAPDUWithoutData(apdu);

 		}

 

-		if(apdu.length > 5) {

+		if (apdu.length > 5) {

 

 			return secureAPDUWithData(apdu);

 		}

-		

-		throw new CardException("Error securing APDU - unexpected APDU length.");		

+

+		throw new CardException("Error securing APDU - unexpected APDU length.");

 	}

 

 	private byte[] verifyAndDecryptSecuredResponseAPDU(byte[] securedAPDU)

@@ -1031,15 +1073,18 @@ public class DNIeSecuredChannel extends T0CardChannel {
 		System.arraycopy(commandResponse, 0, macData, data.length,

 				commandResponse.length);

 

-		byte[] paddedMacData = DNIeCryptoUtil.applyPadding(BLOCK_LENGTH, macData);

+		byte[] paddedMacData = DNIeCryptoUtil.applyPadding(BLOCK_LENGTH,

+				macData);

 

 		incrementSSC();

 

-		byte[] mac = DNIeCryptoUtil.calculateAPDUMAC(paddedMacData, this.kMac, this.ssc, BLOCK_LENGTH);

+		byte[] mac = DNIeCryptoUtil.calculateAPDUMAC(paddedMacData, this.kMac,

+				this.ssc, BLOCK_LENGTH);

 

 		if (!Arrays.equals(mac, obtainedMac)) {

 

-			log.error("Error verifiying MAC of secured response. MAC values do not match.");

+			log

+					.error("Error verifiying MAC of secured response. MAC values do not match.");

 			throw new CardException("Unable to verify MAC of Response APDU.");

 		}

 

@@ -1047,14 +1092,14 @@ public class DNIeSecuredChannel extends T0CardChannel {
 

 			byte[] data2decrypt = new byte[data.length

 					- DNIeCryptoUtil.getCutOffLength(data, BLOCK_LENGTH)];

-			System.arraycopy(data, DNIeCryptoUtil.getCutOffLength(data, BLOCK_LENGTH),

-					data2decrypt, 0, data2decrypt.length);

+			System.arraycopy(data, DNIeCryptoUtil.getCutOffLength(data,

+					BLOCK_LENGTH), data2decrypt, 0, data2decrypt.length);

 

 			byte[] plainData = null;

 

 			try {

-				plainData = DNIeCryptoUtil.perform3DESCipherOperation(data2decrypt, this.kEnc,

-						Cipher.DECRYPT_MODE);

+				plainData = DNIeCryptoUtil.perform3DESCipherOperation(

+						data2decrypt, this.kEnc, Cipher.DECRYPT_MODE);

 			} catch (Exception e) {

 				log.error("Error decrypting data.", e);

 				throw new CardException("Unable to decrypt data.", e);

diff --git a/smcc/src/main/java/at/gv/egiz/smcc/EFObjectDirectory.java b/smcc/src/main/java/at/gv/egiz/smcc/EFObjectDirectory.java
index 17a42e4d..dfa70d91 100644
--- a/smcc/src/main/java/at/gv/egiz/smcc/EFObjectDirectory.java
+++ b/smcc/src/main/java/at/gv/egiz/smcc/EFObjectDirectory.java
@@ -1,26 +1,30 @@
 /*
-* Copyright 2008 Federal Chancellery Austria and
-* Graz University of Technology
-*
-* Licensed under the Apache License, Version 2.0 (the "License");
-* you may not use this file except in compliance with the License.
-* You may obtain a copy of the License at
-*
-*     http://www.apache.org/licenses/LICENSE-2.0
-*
-* Unless required by applicable law or agreed to in writing, software
-* distributed under the License is distributed on an "AS IS" BASIS,
-* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-* See the License for the specific language governing permissions and
-* limitations under the License.
-*/
+ * Copyright 2008 Federal Chancellery Austria and
+ * Graz University of Technology
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 
 package at.gv.egiz.smcc;
 
 import at.gv.egiz.smcc.util.ISO7816Utils;
 import at.gv.egiz.smcc.util.TLV;
 import at.gv.egiz.smcc.util.TLVSequence;
+
+import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.List;
+
 import javax.smartcardio.CardChannel;
 import javax.smartcardio.CardException;
 import javax.smartcardio.CommandAPDU;
@@ -29,134 +33,158 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 /**
- *
+ * 
  * @author clemens
  */
 public class EFObjectDirectory {
 
-    protected static final Logger log = LoggerFactory.getLogger(EFObjectDirectory.class);
-    
-    protected byte[] fid;
-    private byte[] ef_prkd;
-    private byte[] ef_pukd;
-    private byte[] ef_cd;
-    private byte[] ef_aod;
-
-    public EFObjectDirectory() {
-        fid = new byte[] { (byte)0x50, (byte)0x31 };
-    }
-
-    public EFObjectDirectory(byte[] fid) {
-        this.fid = fid;
-    }
-
-    /**
-     * assume DF.CIA selected
-     * EF.OD selected afterwards
-     * @param channel
-     * @throws CardException
-     * @throws SignatureCardException
-     */
-    public void selectAndRead(CardChannel channel) throws CardException, SignatureCardException {
-
-        log.trace("select EF.OD");
-        CommandAPDU cmd = new CommandAPDU(0x00, 0xA4, 0x02, 0x00, fid, 256);
-        ResponseAPDU resp = channel.transmit(cmd);
-
-        if (resp.getSW() != 0x9000) {
-            throw new SignatureCardException("SELECT EF.OD failed: SW=0x"
-                    + Integer.toHexString(resp.getSW()));
-        }
-
-        log.trace("read EF.OD");
-        byte[] efod = ISO7816Utils.readTransparentFile(channel, -1);
-
-        for (TLV cio : new TLVSequence(efod)) {
-            int tag = cio.getTag();
-            byte[] seq = cio.getValue();
-
-            if ((tag & 0xf0) == 0xa0 && seq.length >= 4) {
-
-                byte[] path = Arrays.copyOfRange(seq, 4, 4+seq[3]);
-
-                switch (cio.getTag() & 0x0f) {
-                    case 0:
-                        setEf_prkd(path);
-                        break;
-                    case 1:
-                        setEf_pukd(path);
-                        break;
-                    case 4:
-                        setEf_cd(path);
-                        break;
-                    case 8:
-                        setEf_aod(path);
-                        break;
-                    default:
-                        log.warn("CIOChoice 0x{} not supported: ",
-                                (cio.getTag() & 0x0f));
-                }
-            } else {
-                log.trace("ignoring invalid CIO reference entry: {}", seq);
-            }
-        }
-    }
-
-    /**
-     * @return the ef_prkd
-     */
-    public byte[] getEf_prkd() {
-        return ef_prkd;
-    }
-
-    /**
-     * @param ef_prkd the ef_prkd to set
-     */
-    public void setEf_prkd(byte[] ef_prkd) {
-        this.ef_prkd = ef_prkd;
-    }
-
-    /**
-     * @return the ef_pukd
-     */
-    public byte[] getEf_pukd() {
-        return ef_pukd;
-    }
-
-    /**
-     * @param ef_pukd the ef_pukd to set
-     */
-    public void setEf_pukd(byte[] ef_pukd) {
-        this.ef_pukd = ef_pukd;
-    }
-
-    /**
-     * @return the ef_cd
-     */
-    public byte[] getEf_cd() {
-        return ef_cd;
-    }
-
-    /**
-     * @param ef_cd the ef_cd to set
-     */
-    public void setEf_cd(byte[] ef_cd) {
-        this.ef_cd = ef_cd;
-    }
-
-    /**
-     * @return the ef_aod
-     */
-    public byte[] getEf_aod() {
-        return ef_aod;
-    }
-
-    /**
-     * @param ef_aod the ef_aod to set
-     */
-    public void setEf_aod(byte[] ef_aod) {
-        this.ef_aod = ef_aod;
-    }
-
+	protected static final Logger log = LoggerFactory
+			.getLogger(EFObjectDirectory.class);
+
+	protected byte[] fid;
+	private byte[] ef_prkd;
+	private byte[] ef_pukd;
+	private byte[] ef_aod;
+
+	private List<byte[]> ef_cd_list = new ArrayList<byte[]>();;
+
+	private Integer padding;
+
+	public EFObjectDirectory() {
+		fid = new byte[] { (byte) 0x50, (byte) 0x31 };
+	}
+
+	public EFObjectDirectory(byte[] fid) {
+		this.fid = fid;
+	}
+
+	public EFObjectDirectory(int padding) {
+
+		fid = new byte[] { (byte) 0x50, (byte) 0x31 };
+		this.padding = padding;
+
+	}
+
+	/**
+	 * assume DF.CIA selected EF.OD selected afterwards
+	 * 
+	 * @param channel
+	 * @throws CardException
+	 * @throws SignatureCardException
+	 */
+	public void selectAndRead(CardChannel channel) throws CardException,
+			SignatureCardException {
+
+		executeSelect(channel);
+
+		byte[] efod = ISO7816Utils.readTransparentFile(channel, -1);
+
+		for (TLV cio : new TLVSequence(efod)) {
+			int tag = cio.getTag();
+			
+			if (padding != null && tag == padding) {
+				// reached padding - quit record extraction
+				break;
+			}
+
+			byte[] seq = cio.getValue();
+			
+			if ((tag & 0xf0) == 0xa0 && seq.length >= 4) {
+
+				byte[] path = Arrays.copyOfRange(seq, 4, 4 + seq[3]);
+
+				switch (cio.getTag() & 0x0f) {
+				case 0:
+					setEf_prkd(path);
+					break;
+				case 1:
+					setEf_pukd(path);
+					break;
+				case 4:
+					addCdToEf_cd_list(path);
+					break;
+				case 8:
+					setEf_aod(path);
+					break;
+				default:
+					log.warn("CIOChoice 0x{} not supported: ",
+							(cio.getTag() & 0x0f));
+				}
+			} else {
+				log.trace("ignoring invalid CIO reference entry: {}", seq);
+			}
+		}
+	}
+
+	protected void executeSelect(CardChannel channel)
+			throws SignatureCardException, CardException {
+
+		CommandAPDU cmd = new CommandAPDU(0x00, 0xA4, 0x02, 0x00, fid, 256);
+		ResponseAPDU resp = channel.transmit(cmd);
+
+		if (resp.getSW() != 0x9000) {
+			throw new SignatureCardException("SELECT EF.OD failed: SW=0x"
+					+ Integer.toHexString(resp.getSW()));
+		}
+
+	}
+
+	/**
+	 * @return the ef_prkd
+	 */
+	public byte[] getEf_prkd() {
+		return ef_prkd;
+	}
+
+	/**
+	 * @param ef_prkd
+	 *            the ef_prkd to set
+	 */
+	public void setEf_prkd(byte[] ef_prkd) {
+		this.ef_prkd = ef_prkd;
+	}
+
+	/**
+	 * @return the ef_pukd
+	 */
+	public byte[] getEf_pukd() {
+		return ef_pukd;
+	}
+
+	/**
+	 * @param ef_pukd
+	 *            the ef_pukd to set
+	 */
+	public void setEf_pukd(byte[] ef_pukd) {
+		this.ef_pukd = ef_pukd;
+	}
+
+	/**
+	 * @return the ef_aod
+	 */
+	public byte[] getEf_aod() {
+		return ef_aod;
+	}
+
+	public List<byte[]> getEf_cd_list() {
+		return ef_cd_list;
+	}
+
+	public void setEf_cd_list(List<byte[]> ef_cd_list) {
+		this.ef_cd_list = ef_cd_list;
+	}
+
+	public void addCdToEf_cd_list(byte[] ef_cd) {
+
+		this.ef_cd_list.add(ef_cd);
+	}
+
+	/**
+	 * @param ef_aod
+	 *            the ef_aod to set
+	 */
+	public void setEf_aod(byte[] ef_aod) {
+		this.ef_aod = ef_aod;
+	}
 
 }
diff --git a/smcc/src/main/java/at/gv/egiz/smcc/ESDNIeCard.java b/smcc/src/main/java/at/gv/egiz/smcc/ESDNIeCard.java
index 1c30ca57..a0d426c7 100644
--- a/smcc/src/main/java/at/gv/egiz/smcc/ESDNIeCard.java
+++ b/smcc/src/main/java/at/gv/egiz/smcc/ESDNIeCard.java
@@ -21,7 +21,7 @@ import at.gv.egiz.smcc.util.SMCCHelper;
 

 public class ESDNIeCard extends AbstractSignatureCard implements SignatureCard {

 

-	private final byte[] MASTER_FILE_ID = new byte[] {

+	public static final byte[] MASTER_FILE_ID = new byte[] {

 

 	(byte) 0x4D, (byte) 0x61, (byte) 0x73, (byte) 0x74, (byte) 0x65,

 			(byte) 0x72, (byte) 0x2E, (byte) 0x46, (byte) 0x69, (byte) 0x6C,

@@ -42,20 +42,16 @@ public class ESDNIeCard extends AbstractSignatureCard implements SignatureCard {
 			"[0-9A-Za-z_<>!()?%\\-=&+\\.]", "at/gv/egiz/smcc/ESDNIeCard",

 			"sig.pin", (byte) 0x00, new byte[] {}, PinInfo.UNKNOWN_RETRIES);

 

-	protected CardChannel channel;

 

 	@Override

 	protected CardChannel getCardChannel() {

-

-		if (channel == null) {

-

-			channel = new DNIeSecuredChannel(getCard().getBasicChannel());

-		}

-

-		return channel;

+		

+		// set up a new secure channel each time

+		return new DNIeSecuredChannel(getCard().getBasicChannel());

 	}

-

+	

 	@Override

+	@Exclusive

 	public byte[] createSignature(InputStream input, KeyboxName keyboxName,

 			PINGUI pinGUI, String alg) throws SignatureCardException,

 			InterruptedException, IOException {

@@ -63,7 +59,7 @@ public class ESDNIeCard extends AbstractSignatureCard implements SignatureCard {
 		CardChannel channel = getCardChannel();

 

 		try {

-

+			

 			// Select MF

 			executeSelectMasterFile(channel);

 

@@ -135,20 +131,22 @@ public class ESDNIeCard extends AbstractSignatureCard implements SignatureCard {
 			throw new SignatureCardException(

 					"Error creating signature with DNIe card.", e);

 		}

+		

 	}

 

 	@Override

+	@Exclusive

 	public byte[] getCertificate(KeyboxName keyboxName, PINGUI pinGUI)

 			throws SignatureCardException, InterruptedException {

 

 		byte[] result = null;

-

+		

 		CardChannel channel = getCardChannel();

 

 		byte[] certId = null;

 

 		try {

-

+			

 			// Select MF

 			executeSelectMasterFile(channel);

 

@@ -161,7 +159,7 @@ public class ESDNIeCard extends AbstractSignatureCard implements SignatureCard {
 			efOd.selectAndRead(channel);

 

 			DNIeCIOCertificateDirectory efCd = new DNIeCIOCertificateDirectory(

-					efOd.getEf_cd());

+					efOd.getEf_cd_list().get(0));

 

 			try {

 				efCd.selectAndRead(channel);

@@ -214,17 +212,18 @@ public class ESDNIeCard extends AbstractSignatureCard implements SignatureCard {
 					compressedWithoutHeader.length);

 

 			result = decompressData(compressedWithoutHeader);

-

+			

 		} catch (CardException e) {

 

 			log.error("Error reading certificate from card.", e);

 			throw new SignatureCardException(

 					"Error reading certificate from card.", e);

 		}

-

+		

 		return result;

 	}

 

+	

 	@Override

 	public byte[] getInfobox(String infobox, PINGUI pinGUI, String domainId)

 			throws SignatureCardException, InterruptedException {

diff --git a/smcc/src/main/java/at/gv/egiz/smcc/FINEIDAODirectory.java b/smcc/src/main/java/at/gv/egiz/smcc/FINEIDAODirectory.java
new file mode 100644
index 00000000..3fd1503c
--- /dev/null
+++ b/smcc/src/main/java/at/gv/egiz/smcc/FINEIDAODirectory.java
@@ -0,0 +1,143 @@
+/*

+* Copyright 2008 Federal Chancellery Austria and

+* Graz University of Technology

+*

+* Licensed under the Apache License, Version 2.0 (the "License");

+* you may not use this file except in compliance with the License.

+* You may obtain a copy of the License at

+*

+*     http://www.apache.org/licenses/LICENSE-2.0

+*

+* Unless required by applicable law or agreed to in writing, software

+* distributed under the License is distributed on an "AS IS" BASIS,

+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

+* See the License for the specific language governing permissions and

+* limitations under the License.

+*/

+package at.gv.egiz.smcc;

+

+import iaik.me.asn1.ASN1;

+

+import java.io.IOException;

+import java.util.ArrayList;

+import java.util.Arrays;

+import java.util.List;

+

+import javax.smartcardio.CardChannel;

+import javax.smartcardio.CardException;

+import javax.smartcardio.CommandAPDU;

+import javax.smartcardio.ResponseAPDU;

+

+import org.slf4j.Logger;

+import org.slf4j.LoggerFactory;

+

+import at.gv.egiz.smcc.util.ISO7816Utils;

+import at.gv.egiz.smcc.util.TLVSequence;

+

+public class FINEIDAODirectory {

+	

+    protected static final Logger log = LoggerFactory.getLogger(CIOCertificateDirectory.class);

+    protected byte[] fid;

+    protected List<FINEIDAuthenticationObject> aos;

+

+    public FINEIDAODirectory(byte[] fid) {

+    	

+    	this.fid = FINEIDUtil.removeMFPath(fid);    	

+        aos = new ArrayList<FINEIDAuthenticationObject>();

+    }

+

+    /**

+     * assume DF.CIA selected

+     * CIO.CD selected afterwards

+     *

+     * @param channel

+     * @throws CardException

+     * @throws SignatureCardException

+     * @throws IOException if ASN.1 structure cannot be parsed

+     */

+    public void selectAndRead(CardChannel channel) throws CardException, SignatureCardException, IOException {

+

+        CommandAPDU cmd = new CommandAPDU(0x00, 0xA4, 0x08, ISO7816Utils.P2_FCI, fid, 256);

+        ResponseAPDU resp = channel.transmit(cmd);

+

+        byte[] fcx = new TLVSequence(resp.getBytes()).getValue(ISO7816Utils.TAG_FCI);

+        byte[] fd = new TLVSequence(fcx).getValue(0x82);

+        

+        if ((fd[0] & 0x05) == 0x01) {

+

+        	readAuthenticationObjectsFromTransparentFile(channel);

+        }

+    }

+    

+    protected byte[] doReadTransparentFile(CardChannel channel) throws CardException, SignatureCardException {

+    	

+    	return ISO7816Utils.readTransparentFile(channel, -1);

+    }

+    

+    protected void readAuthenticationObjectsFromTransparentFile(CardChannel channel) throws CardException, SignatureCardException, IOException {

+    	

+    	byte[] ef = doReadTransparentFile(channel);  	

+    	

+        int i = 0;

+        int j;

+

+        do {

+            int length = 0;

+            int ll = 0;

+            if ((ef[i + 1] & 0xf0) == 0x80) {

+                ll = ef[i + 1] & 0x7f;

+                for (int it = 0; it < ll; it++) {

+                    length = (length << 8) + (ef[i + it + 2] & 0xff);

+                }

+            } else {

+                length = (ef[i + 1] & 0xff);

+            }

+

+            log.trace("read transparent file entry: tag 0x{}, length 0x{}", Integer.toHexString(ef[i]),

+                    Integer.toHexString(length));

+

+            j = i + 2 + ll + length;

+            addAuthenticationObject(Arrays.copyOfRange(ef, i, j));

+            i = j;

+        } while (i < ef.length && ef[i] > 0);

+        

+    }

+    

+    protected void addAuthenticationObject(byte[] ao) throws IOException {

+        

+        ASN1 authenticationObjects = new ASN1(ao);

+

+        FINEIDAuthenticationObject authObject = new FINEIDAuthenticationObject();

+        authObject.setLabel(authenticationObjects.getElementAt(0).getElementAt(0).gvString());

+

+        authObject.setAuthId(authenticationObjects.getElementAt(1).getElementAt(0).gvByteArray());

+

+        //read CONTEXTSPECIFIC manually

+        byte[] ctxSpecific = authenticationObjects.getElementAt(authenticationObjects.getSize()-1).getEncoded();

+        

+        if ((ctxSpecific[0] & 0xff) == 0xa1) {

+            int ll = ((ctxSpecific[1] & 0xf0) == 0x80)

+                    ? (ctxSpecific[1] & 0x0f) + 2 : 2;

+            ASN1 aoAttributes = new ASN1(Arrays.copyOfRange(ctxSpecific, ll, ctxSpecific.length));

+

+            authObject.setPath(aoAttributes.getElementAt(aoAttributes.getSize()-1).getElementAt(0).gvByteArray());

+

+            // get pwdReference

+            byte[] ctxSpecific2 = aoAttributes.getElementAt(4).getEncoded();

+            ASN1 pwdRef = new ASN1(ctxSpecific2);

+            

+            authObject.setPwdReference(pwdRef.gvByteArray());

+            

+        } else {

+            log.warn("expected CONTEXTSPECIFIC, got 0x{}",

+                    Integer.toHexString(ctxSpecific[0]));

+        }

+        

+        log.debug("adding {}", authObject);

+        aos.add(authObject);

+    }

+

+    public List<FINEIDAuthenticationObject> getAOs() {

+        return aos;

+    }

+}

diff --git a/smcc/src/main/java/at/gv/egiz/smcc/FINEIDAuthenticationObject.java b/smcc/src/main/java/at/gv/egiz/smcc/FINEIDAuthenticationObject.java
new file mode 100644
index 00000000..d25946f1
--- /dev/null
+++ b/smcc/src/main/java/at/gv/egiz/smcc/FINEIDAuthenticationObject.java
@@ -0,0 +1,57 @@
+/*

+* Copyright 2008 Federal Chancellery Austria and

+* Graz University of Technology

+*

+* Licensed under the Apache License, Version 2.0 (the "License");

+* you may not use this file except in compliance with the License.

+* You may obtain a copy of the License at

+*

+*     http://www.apache.org/licenses/LICENSE-2.0

+*

+* Unless required by applicable law or agreed to in writing, software

+* distributed under the License is distributed on an "AS IS" BASIS,

+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

+* See the License for the specific language governing permissions and

+* limitations under the License.

+*/

+package at.gv.egiz.smcc;

+

+public class FINEIDAuthenticationObject {

+

+	private String label;

+	private byte[] authId;

+	private byte[] path;

+	private byte[] pwdReference;

+		

+	public String getLabel() {

+		return label;

+	}

+	

+	public void setLabel(String label) {

+		this.label = label;

+	}

+	

+	public byte[] getAuthId() {

+		return authId;

+	}

+	

+	public void setAuthId(byte[] authId) {

+		this.authId = authId;

+	}

+	

+	public byte[] getPath() {

+		return path;

+	}

+	

+	public void setPath(byte[] path) {

+		this.path = path;

+	}

+	

+	public byte[] getPwdReference() {

+		return pwdReference;

+	}

+	

+	public void setPwdReference(byte[] pwdReference) {

+		this.pwdReference = pwdReference;

+	}

+}

diff --git a/smcc/src/main/java/at/gv/egiz/smcc/FINEIDCIOCertificateDirectory.java b/smcc/src/main/java/at/gv/egiz/smcc/FINEIDCIOCertificateDirectory.java
new file mode 100644
index 00000000..0de2b3c1
--- /dev/null
+++ b/smcc/src/main/java/at/gv/egiz/smcc/FINEIDCIOCertificateDirectory.java
@@ -0,0 +1,56 @@
+/*

+ * Copyright 2008 Federal Chancellery Austria and

+ * Graz University of Technology

+ *

+ * Licensed under the Apache License, Version 2.0 (the "License");

+ * you may not use this file except in compliance with the License.

+ * You may obtain a copy of the License at

+ *

+ *     http://www.apache.org/licenses/LICENSE-2.0

+ *

+ * Unless required by applicable law or agreed to in writing, software

+ * distributed under the License is distributed on an "AS IS" BASIS,

+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

+ * See the License for the specific language governing permissions and

+ * limitations under the License.

+ */

+

+package at.gv.egiz.smcc;

+

+import javax.smartcardio.CardChannel;

+import javax.smartcardio.CardException;

+import javax.smartcardio.CommandAPDU;

+import javax.smartcardio.ResponseAPDU;

+

+import at.gv.egiz.smcc.util.ISO7816Utils;

+import at.gv.egiz.smcc.util.TLVSequence;

+

+public class FINEIDCIOCertificateDirectory extends CIOCertificateDirectory {

+

+	protected static final boolean RETRIEVE_AUTH_ID_FROM_ASN1 = Boolean.FALSE;

+	

+	public FINEIDCIOCertificateDirectory(byte[] fid) {

+		

+		super(fid);

+		this.fid = FINEIDUtil.removeMFPath(fid);

+	}

+	

+	@Override

+    protected byte[] executeSelect(CardChannel channel) throws CardException {

+    	  

+          CommandAPDU cmd = new CommandAPDU(0x00, 0xA4, 0x08, ISO7816Utils.P2_FCI, fid, 256);

+          ResponseAPDU resp = channel.transmit(cmd);

+

+          byte[] fcx = new TLVSequence(resp.getBytes()).getValue(ISO7816Utils.TAG_FCI);

+          byte[] fd = new TLVSequence(fcx).getValue(0x82);

+          

+          return fd;

+      }

+	

+	@Override

+	protected boolean retrieveAuthIdFromASN1() {

+		

+		return RETRIEVE_AUTH_ID_FROM_ASN1;

+	}

+	

+}

diff --git a/smcc/src/main/java/at/gv/egiz/smcc/FINEIDCIOKeyDirectory.java b/smcc/src/main/java/at/gv/egiz/smcc/FINEIDCIOKeyDirectory.java
new file mode 100644
index 00000000..2d89e5bc
--- /dev/null
+++ b/smcc/src/main/java/at/gv/egiz/smcc/FINEIDCIOKeyDirectory.java
@@ -0,0 +1,33 @@
+/*

+ * Copyright 2008 Federal Chancellery Austria and

+ * Graz University of Technology

+ *

+ * Licensed under the Apache License, Version 2.0 (the "License");

+ * you may not use this file except in compliance with the License.

+ * You may obtain a copy of the License at

+ *

+ *     http://www.apache.org/licenses/LICENSE-2.0

+ *

+ * Unless required by applicable law or agreed to in writing, software

+ * distributed under the License is distributed on an "AS IS" BASIS,

+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

+ * See the License for the specific language governing permissions and

+ * limitations under the License.

+ */

+

+package at.gv.egiz.smcc;

+

+public class FINEIDCIOKeyDirectory extends FINEIDCIOCertificateDirectory {

+

+	protected static final boolean RETRIEVE_AUTH_ID_FROM_ASN1 = Boolean.TRUE;

+	

+	public FINEIDCIOKeyDirectory(byte[] fid) {

+		

+		super(fid);		

+	}

+	

+	protected boolean retrieveAuthIdFromASN1() {

+		

+		return RETRIEVE_AUTH_ID_FROM_ASN1;

+	}

+}

diff --git a/smcc/src/main/java/at/gv/egiz/smcc/FINEIDCard.java b/smcc/src/main/java/at/gv/egiz/smcc/FINEIDCard.java
new file mode 100644
index 00000000..96c8e517
--- /dev/null
+++ b/smcc/src/main/java/at/gv/egiz/smcc/FINEIDCard.java
@@ -0,0 +1,364 @@
+/*

+ * Copyright 2008 Federal Chancellery Austria and

+ * Graz University of Technology

+ *

+ * Licensed under the Apache License, Version 2.0 (the "License");

+ * you may not use this file except in compliance with the License.

+ * You may obtain a copy of the License at

+ *

+ *     http://www.apache.org/licenses/LICENSE-2.0

+ *

+ * Unless required by applicable law or agreed to in writing, software

+ * distributed under the License is distributed on an "AS IS" BASIS,

+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

+ * See the License for the specific language governing permissions and

+ * limitations under the License.

+ */

+

+package at.gv.egiz.smcc;

+

+import java.io.IOException;

+import java.io.InputStream;

+import java.security.MessageDigest;

+import java.security.NoSuchAlgorithmException;

+import java.util.Arrays;

+

+import javax.smartcardio.CardChannel;

+import javax.smartcardio.CardException;

+import javax.smartcardio.CommandAPDU;

+import javax.smartcardio.ResponseAPDU;

+

+import org.slf4j.Logger;

+import org.slf4j.LoggerFactory;

+

+import at.gv.egiz.smcc.pin.gui.PINGUI;

+import at.gv.egiz.smcc.util.ISO7816Utils;

+import at.gv.egiz.smcc.util.SMCCHelper;

+import at.gv.egiz.smcc.util.TLVSequence;

+

+public class FINEIDCard extends AbstractSignatureCard implements SignatureCard {

+

+	private static final int EF_OD_PADDING = 0xFF;

+	private static final String SIG_CERT_LABEL = "allekirjoitusvarmenne";

+	private static final String SIG_KEY_LABEL = "allekirjoitusavain";

+

+	private final Logger log = LoggerFactory.getLogger(FINEIDCard.class);

+

+	protected PinInfo pinInfo = new PinInfo(6, 8, "[0-9]",

+			"at/gv/egiz/smcc/FINEIDCard", "sig.pin", (byte) 0x00,

+			new byte[] {}, PinInfo.UNKNOWN_RETRIES);

+

+	@Override

+	public byte[] createSignature(InputStream input, KeyboxName keyboxName,

+			PINGUI pinGUI, String alg) throws SignatureCardException,

+			InterruptedException, IOException {

+

+		CardChannel channel = getCardChannel();

+

+		try {

+

+			FINEIDEFObjectDirectory ef_od = new FINEIDEFObjectDirectory(

+					EF_OD_PADDING);

+			ef_od.selectAndRead(channel);

+

+			// read PRKD to find correct key

+			FINEIDCIOKeyDirectory ef_prkd = new FINEIDCIOKeyDirectory(ef_od

+					.getEf_prkd());

+			ef_prkd.selectAndRead(channel);

+

+			byte[] efKey = null;

+			byte[] authID = null;

+

+			for (CIOCertificate cioCertificate : ef_prkd.getCIOs()) {

+				String label = cioCertificate.getLabel();

+				if (label != null

+						&& label.toLowerCase().contains(

+								SIG_KEY_LABEL.toLowerCase())) {

+

+					efKey = cioCertificate.getEfidOrPath();

+					authID = cioCertificate.getAuthId();

+				}

+			}

+

+			if (efKey == null) {

+

+				throw new SignatureCardException(

+						"Could not determine path to private key from PrKD.");

+			}

+

+			if (authID == null) {

+

+				throw new SignatureCardException(

+						"Could not determine authID of private key from PrKD.");

+			}

+

+			// read AOD to find associated PIN (authId must match)

+			FINEIDAODirectory ef_aod = new FINEIDAODirectory(ef_od.getEf_aod());

+			ef_aod.selectAndRead(channel);

+

+			byte[] pinPath = null;

+			byte[] pwdRef = null;

+			for (FINEIDAuthenticationObject ao : ef_aod.getAOs()) {

+

+				byte[] id = ao.getAuthId();

+				if (id != null && Arrays.equals(id, authID)) {

+					pinPath = ao.getPath();

+					pwdRef = ao.getPwdReference();

+				}

+			}

+

+			if (pinPath == null) {

+

+				throw new SignatureCardException(

+						"Could not determine path to PIN from AOD.");

+			}

+

+			if (pwdRef == null) {

+

+				throw new SignatureCardException(

+						"Could not determine PIN reference from AOD.");

+			}

+

+			// verify PIN

+			verifyPINLoop(channel, pinInfo, pinGUI, pinPath,

+					pwdRef[pwdRef.length - 1]);

+

+			// Set MSE

+			CommandAPDU selectKeyPath = new CommandAPDU((byte) 0x00,

+					(byte) 0xA4, (byte) 0x08, (byte) 0x00, FINEIDUtil

+							.removeMFPath(efKey));

+			ResponseAPDU resp = channel.transmit(selectKeyPath);

+

+			if (resp.getSW() != 0x9000) {

+

+				throw new SignatureCardException(

+						"Could not select private key file DF.");

+			}

+

+			executeRestoreMSE(channel);

+

+			byte[] dst = new byte[] { (byte) 0x80, (byte) 0x01, (byte) 0x12,

+					(byte) 0x81, (byte) 0x02, efKey[efKey.length - 2],

+					efKey[efKey.length - 1] };

+

+			executeSetMSE(channel, dst);

+

+			// SIGN

+			MessageDigest md;

+			try {

+				md = MessageDigest.getInstance("SHA-1");

+			} catch (NoSuchAlgorithmException e) {

+				log.error("Failed to get MessageDigest.", e);

+				throw new SignatureCardException(e);

+			}

+			// calculate message digest

+			byte[] digest = new byte[md.getDigestLength()];

+			for (int l; (l = input.read(digest)) != -1;) {

+				md.update(digest, 0, l);

+			}

+			digest = md.digest();

+

+			byte[] sigVal = executeSign(channel, digest);

+			return sigVal;

+

+		} catch (CardException e) {

+

+			throw new SignatureCardException("Error creating signature.", e);

+		}

+

+	}

+

+	@Override

+	public byte[] getCertificate(KeyboxName keyboxName, PINGUI pinGUI)

+			throws SignatureCardException, InterruptedException {

+

+		CardChannel channel = getCardChannel();

+

+		try {

+			FINEIDEFObjectDirectory ef_od = new FINEIDEFObjectDirectory(

+					EF_OD_PADDING);

+			ef_od.selectAndRead(channel);

+

+			byte[] certPath = null;

+

+			for (int i = 0; i < ef_od.getEf_cd_list().size(); i++) {

+

+				FINEIDCIOCertificateDirectory ef_cd = new FINEIDCIOCertificateDirectory(

+						ef_od.getEf_cd_list().get(i));

+

+				try {

+					ef_cd.selectAndRead(channel);

+				} catch (IOException e) {

+					log.debug("Cannot read EF.CD - try next one in list..");

+					continue;

+				}

+

+				for (CIOCertificate cioCertificate : ef_cd.getCIOs()) {

+					String label = cioCertificate.getLabel();

+					if (label != null

+							&& label.toLowerCase().contains(

+									SIG_CERT_LABEL.toLowerCase())) {

+						certPath = cioCertificate.getEfidOrPath();

+					}

+				}

+			}

+

+			if (certPath == null) {

+

+				throw new SignatureCardException(

+						"Could not determine path to certificate.");

+			}

+

+			log

+					.debug("Read certificate path: "

+							+ SMCCHelper.toString(certPath));

+

+			certPath = FINEIDUtil.removeMFPath(certPath);

+

+			CommandAPDU apdu = new CommandAPDU((byte) 0x00, (byte) 0xA4,

+					(byte) 0x08, (byte) 0x00, certPath);

+			ResponseAPDU resp = channel.transmit(apdu);

+

+			byte[] fcx = new TLVSequence(resp.getBytes())

+					.getValue(ISO7816Utils.TAG_FCI);

+			byte[] fileDataLength = new TLVSequence(fcx).getValue(0x81);

+

+			return ISO7816Utils.readTransparentFile(channel,

+					computeLengthFromByteArray(fileDataLength));

+

+		} catch (CardException e) {

+

+			throw new SignatureCardException(

+					"Error reading certificate from card.", e);

+		}

+	}

+

+	@Override

+	public byte[] getInfobox(String infobox, PINGUI pinGUI, String domainId)

+			throws SignatureCardException, InterruptedException {

+

+		throw new IllegalArgumentException("Infobox '" + infobox

+				+ "' not supported.");

+	}

+

+	protected void verifyPINLoop(CardChannel channel, PinInfo spec,

+			PINGUI provider, byte[] pinPath, byte keyID)

+			throws LockedException, NotActivatedException,

+			SignatureCardException, InterruptedException, CardException {

+

+		CommandAPDU verifySelect = new CommandAPDU((byte) 0x00, (byte) 0xA4,

+				(byte) 0x08, (byte) 0x00, FINEIDUtil.removeMFPath(pinPath));

+		ResponseAPDU response = channel.transmit(verifySelect);

+

+		if (response.getSW() != 0x9000) {

+

+			throw new SignatureCardException("Cannot select PIN path "

+					+ SMCCHelper.toString(pinPath) + ": "

+					+ Integer.toHexString(response.getSW()));

+		}

+

+		int retries = -1;

+

+		do {

+			retries = verifyPIN(channel, spec, provider, retries, keyID);

+		} while (retries > 0);

+	}

+

+	protected int verifyPIN(CardChannel channel, PinInfo pinSpec,

+			PINGUI provider, int retries, byte keyID)

+			throws SignatureCardException, LockedException,

+			NotActivatedException, InterruptedException, CardException {

+

+		VerifyAPDUSpec apduSpec = new VerifyAPDUSpec(new byte[] { (byte) 0x00,

+				(byte) 0x20, (byte) 0x00, keyID, (byte) 0x08, (byte) 0x00,

+				(byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,

+				(byte) 0x00, (byte) 0x00, (byte) 0x00 }, 0,

+				VerifyAPDUSpec.PIN_FORMAT_ASCII, 8);

+

+		ResponseAPDU resp = reader.verify(channel, apduSpec, provider, pinSpec,

+				retries);

+

+		if (resp.getSW() == 0x9000) {

+			return -1;

+		}

+		if (resp.getSW() >> 4 == 0x63c) {

+			return 0x0f & resp.getSW();

+		}

+

+		switch (resp.getSW()) {

+		case 0x6983:

+			// authentication method blocked

+			throw new LockedException();

+		case 0x6984:

+			// reference data not usable

+			throw new NotActivatedException();

+		case 0x6985:

+			// conditions of use not satisfied

+			throw new NotActivatedException();

+

+		default:

+			String msg = "VERIFY failed. SW="

+					+ Integer.toHexString(resp.getSW());

+			log.info(msg);

+			throw new SignatureCardException(msg);

+		}

+

+	}

+

+	private void executeRestoreMSE(CardChannel channel) throws CardException {

+

+		CommandAPDU mseRestore = new CommandAPDU((byte) 0x00, (byte) 0x22,

+				(byte) 0xF3, (byte) 0x00);

+		ResponseAPDU resp = channel.transmit(mseRestore);

+

+		if (resp.getSW() != 0x9000) {

+

+			throw new CardException("Error restoring MSE: "

+					+ Integer.toHexString(resp.getSW()));

+		}

+

+	}

+

+	private void executeSetMSE(CardChannel channel, byte[] dst)

+			throws CardException {

+

+		CommandAPDU mseSet = new CommandAPDU((byte) 0x00, (byte) 0x22,

+				(byte) 0x41, (byte) 0xB6, dst);

+		ResponseAPDU resp = channel.transmit(mseSet);

+

+		if (resp.getSW() != 0x9000) {

+

+			throw new CardException("Error setting MSE: "

+					+ Integer.toHexString(resp.getSW()));

+		}

+

+	}

+

+	private byte[] executeSign(CardChannel channel, byte[] hash)

+			throws CardException {

+

+		CommandAPDU sign = new CommandAPDU((byte) 0x00, (byte) 0x2A,

+				(byte) 0x9E, (byte) 0x9A, hash);

+		ResponseAPDU resp = channel.transmit(sign);

+

+		if (resp.getSW() != 0x9000) {

+

+			throw new CardException("Error signing hash: "

+					+ Integer.toHexString(resp.getSW()));

+		}

+

+		return resp.getData();

+	}

+

+	private int computeLengthFromByteArray(byte[] input) {

+

+		int result = 0;

+

+		for (int i = 0; i < input.length; i++) {

+			int current = input[input.length - 1 - i];

+			result = result + (int) (current * Math.pow(256, i));

+		}

+		return result;

+	}

+

+}

diff --git a/smcc/src/main/java/at/gv/egiz/smcc/FINEIDEFObjectDirectory.java b/smcc/src/main/java/at/gv/egiz/smcc/FINEIDEFObjectDirectory.java
new file mode 100644
index 00000000..2690d694
--- /dev/null
+++ b/smcc/src/main/java/at/gv/egiz/smcc/FINEIDEFObjectDirectory.java
@@ -0,0 +1,44 @@
+/*

+ * Copyright 2008 Federal Chancellery Austria and

+ * Graz University of Technology

+ *

+ * Licensed under the Apache License, Version 2.0 (the "License");

+ * you may not use this file except in compliance with the License.

+ * You may obtain a copy of the License at

+ *

+ *     http://www.apache.org/licenses/LICENSE-2.0

+ *

+ * Unless required by applicable law or agreed to in writing, software

+ * distributed under the License is distributed on an "AS IS" BASIS,

+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

+ * See the License for the specific language governing permissions and

+ * limitations under the License.

+ */

+

+package at.gv.egiz.smcc;

+

+import javax.smartcardio.CardChannel;

+import javax.smartcardio.CardException;

+import javax.smartcardio.CommandAPDU;

+import javax.smartcardio.ResponseAPDU;

+

+public class FINEIDEFObjectDirectory extends EFObjectDirectory {

+

+	public FINEIDEFObjectDirectory(int padding) {

+

+		super(padding);

+	}	

+	

+	@Override

+	protected void executeSelect(CardChannel channel)

+			throws SignatureCardException, CardException {		

+		

+		CommandAPDU cmd = new CommandAPDU(0x00, 0xA4, 0x00, 0x00, fid, 256);

+		ResponseAPDU resp = channel.transmit(cmd);

+

+		if (resp.getSW() != 0x9000) {

+			throw new SignatureCardException("SELECT EF.OD failed: SW=0x"

+					+ Integer.toHexString(resp.getSW()));

+		}

+	}

+}

diff --git a/smcc/src/main/java/at/gv/egiz/smcc/FINEIDUtil.java b/smcc/src/main/java/at/gv/egiz/smcc/FINEIDUtil.java
new file mode 100644
index 00000000..11f37100
--- /dev/null
+++ b/smcc/src/main/java/at/gv/egiz/smcc/FINEIDUtil.java
@@ -0,0 +1,37 @@
+/*

+* Copyright 2008 Federal Chancellery Austria and

+* Graz University of Technology

+*

+* Licensed under the Apache License, Version 2.0 (the "License");

+* you may not use this file except in compliance with the License.

+* You may obtain a copy of the License at

+*

+*     http://www.apache.org/licenses/LICENSE-2.0

+*

+* Unless required by applicable law or agreed to in writing, software

+* distributed under the License is distributed on an "AS IS" BASIS,

+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

+* See the License for the specific language governing permissions and

+* limitations under the License.

+*/

+package at.gv.egiz.smcc;

+

+public class FINEIDUtil {

+

+	public static byte[] removeMFPath(byte[] completePath) {

+

+		byte[] result = null;

+

+		// remove MF path

+		if (completePath.length >= 2 && completePath[0] == 0x3F

+				&& completePath[1] == 0x00) {

+			result = new byte[completePath.length - 2];

+			System.arraycopy(completePath, 2, result, 0,

+					completePath.length - 2);

+		} else {

+			result = completePath;

+		}

+

+		return result;

+	}

+}

diff --git a/smcc/src/main/java/at/gv/egiz/smcc/LIEZertifikatCard.java b/smcc/src/main/java/at/gv/egiz/smcc/LIEZertifikatCard.java
index c4324773..434f35a1 100644
--- a/smcc/src/main/java/at/gv/egiz/smcc/LIEZertifikatCard.java
+++ b/smcc/src/main/java/at/gv/egiz/smcc/LIEZertifikatCard.java
@@ -109,7 +109,7 @@ public class LIEZertifikatCard extends AbstractSignatureCard implements Signatur
       EFObjectDirectory ef_od = new EFObjectDirectory();
       ef_od.selectAndRead(channel);
 
-      CIOCertificateDirectory ef_cd = new CIOCertificateDirectory(ef_od.getEf_cd());
+      CIOCertificateDirectory ef_cd = new CIOCertificateDirectory(ef_od.getEf_cd_list().get(0));
       ef_cd.selectAndRead(channel);
 
         byte[] ef_qcert = null;
diff --git a/smcc/src/main/java/at/gv/egiz/smcc/SignatureCardFactory.java b/smcc/src/main/java/at/gv/egiz/smcc/SignatureCardFactory.java
index 3a773ca2..22d295e0 100644
--- a/smcc/src/main/java/at/gv/egiz/smcc/SignatureCardFactory.java
+++ b/smcc/src/main/java/at/gv/egiz/smcc/SignatureCardFactory.java
@@ -183,7 +183,7 @@ public class SignatureCardFactory {
 		// e-card G3
 		supportedCards.add(new SupportedCard(
 		// ATR
-		// (3b:dd:96:ff:81:b1:fe:45:1f:03:80:31:b0:52:02:03:64:04:1b:b4:22:81:05:18)
+				// (3b:dd:96:ff:81:b1:fe:45:1f:03:80:31:b0:52:02:03:64:04:1b:b4:22:81:05:18)
 				new byte[] { (byte) 0x3b, (byte) 0xdd, (byte) 0x96,
 						(byte) 0xff, (byte) 0x81, (byte) 0xb1, (byte) 0xfe,
 						(byte) 0x45, (byte) 0x1f, (byte) 0x03, (byte) 0x00,
@@ -203,7 +203,7 @@ public class SignatureCardFactory {
 		// a-sign premium (EPA)
 		supportedCards.add(new SupportedCard(
 		// ATR
-		// (3b:bf:11:00:81:31:fe:45:45:50:41:00:00:00:00:00:00:00:00:00:00:00:00:00)
+				// (3b:bf:11:00:81:31:fe:45:45:50:41:00:00:00:00:00:00:00:00:00:00:00:00:00)
 				new byte[] { (byte) 0x3b, (byte) 0xbf, (byte) 0x11,
 						(byte) 0x00, (byte) 0x81, (byte) 0x31, (byte) 0xfe,
 						(byte) 0x45, (byte) 0x45, (byte) 0x50, (byte) 0x41,
@@ -224,7 +224,7 @@ public class SignatureCardFactory {
 		// a-sign premium (MCA)
 		supportedCards.add(new SupportedCard(
 		// ATR
-		// (3b:bf:11:00:81:31:fe:45:45:50:41:00:00:00:00:00:00:00:00:00:00:00:00:00)
+				// (3b:bf:11:00:81:31:fe:45:45:50:41:00:00:00:00:00:00:00:00:00:00:00:00:00)
 				new byte[] { (byte) 0x3b, (byte) 0xbf, (byte) 0x11,
 						(byte) 0x00, (byte) 0x81, (byte) 0x31, (byte) 0xfe,
 						(byte) 0x45, (byte) 0x4D, (byte) 0x43, (byte) 0x41,
@@ -309,6 +309,41 @@ public class SignatureCardFactory {
 						(byte) 0xff, (byte) 0xff, (byte) 0x00, (byte) 0xff,
 						(byte) 0xff }, "at.gv.egiz.smcc.ESDNIeCard"));
 
+		// FMNT card - ATR is correct, but implementation is NOT equal to DNIe
+//		supportedCards.add(new SupportedCard(
+//				// ATR
+//				// [3b:ef:00:00:40:14:80:25:43:45:52:45:53:57:01:16:01:01:03:90:00]
+//				new byte[] { (byte) 0x3b, (byte) 0xEF, (byte) 0x00,
+//						(byte) 0x00, (byte) 0x40, (byte) 0x14, (byte) 0x80,
+//						(byte) 0x25, (byte) 0x43, (byte) 0x45, (byte) 0x52,
+//						(byte) 0x45, (byte) 0x53, (byte) 0x57, (byte) 0x01,
+//						(byte) 0x16, (byte) 0x01, (byte) 0x01, (byte) 0x03,
+//						(byte) 0x90, (byte) 0x00 },
+//				// mask (ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff:ff)
+//				new byte[] { (byte) 0xff, (byte) 0xff, (byte) 0xff,
+//						(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
+//						(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
+//						(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
+//						(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
+//						(byte) 0xff, (byte) 0xff },
+//				"at.gv.egiz.smcc.ESDNIeCard"));
+
+		// FIN eID
+		supportedCards.add(new SupportedCard(
+		// ATR [3b:7B:94:00:00:80:62:12:51:56:46:69:6E:45:49:44]
+				new byte[] { (byte) 0x3b, (byte) 0x7B, (byte) 0x94,
+						(byte) 0x00, (byte) 0x00, (byte) 0x80, (byte) 0x62,
+						(byte) 0x00, (byte) 0x51, (byte) 0x56, (byte) 0x46,
+						(byte) 0x69, (byte) 0x6E, (byte) 0x45, (byte) 0x49,
+						(byte) 0x44 },
+				// mask (ff:ff:ff:ff:ff:ff:ff:00:ff:ff:ff:ff:ff:ff:ff:ff) -
+				// ignore card OS minor version
+				new byte[] { (byte) 0xff, (byte) 0xff, (byte) 0xff,
+						(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
+						(byte) 0x00, (byte) 0xff, (byte) 0xff, (byte) 0xff,
+						(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
+						(byte) 0xff }, "at.gv.egiz.smcc.FINEIDCard"));
+
 		// ITCards
 		supportedCards.add(new SupportedCard(
 		// ATR =
diff --git a/smcc/src/main/java/at/gv/egiz/smcc/T0CardChannel.java b/smcc/src/main/java/at/gv/egiz/smcc/T0CardChannel.java
index 4806b6c0..65bcd84b 100644
--- a/smcc/src/main/java/at/gv/egiz/smcc/T0CardChannel.java
+++ b/smcc/src/main/java/at/gv/egiz/smcc/T0CardChannel.java
@@ -49,7 +49,7 @@ public class T0CardChannel extends LogCardChannel {
 		CommandAPDU command = new CommandAPDU(new byte[] { (byte) 0x00,

 				(byte) 0xC0, (byte) 0x00, (byte) 0x00, (byte) sw2 });

 		ResponseAPDU resp = channel.transmit(command);

-

+		

 		try {

 			bof.write(resp.getData());

 		} catch (IOException e) {

diff --git a/smcc/src/main/java/at/gv/egiz/smcc/util/ISO7816Utils.java b/smcc/src/main/java/at/gv/egiz/smcc/util/ISO7816Utils.java
index f35086b6..44045d3c 100644
--- a/smcc/src/main/java/at/gv/egiz/smcc/util/ISO7816Utils.java
+++ b/smcc/src/main/java/at/gv/egiz/smcc/util/ISO7816Utils.java
@@ -65,6 +65,11 @@ public class ISO7816Utils {
 			@Override
 			protected byte[] readBinary(int offset, int len) throws IOException {
 
+				if(len < 1) {
+					// nothing to read - return
+					return new byte[0];
+				}
+								
 				ResponseAPDU resp;
 				try {
 					resp = channel.transmit(new CommandAPDU(0x00, 0xB0,
@@ -76,7 +81,7 @@ public class ISO7816Utils {
 				// handle case: wrong number of bytes requested from card
 				// card indicates correct number of bytes available in SW2
 				if (resp.getSW1() == 0x6c) {
-
+					
 					try {
 						resp = channel.transmit(new CommandAPDU(0x00, 0xB0,
 								0x7F & (offset >> 8), offset & 0xFF, resp
@@ -106,7 +111,6 @@ public class ISO7816Utils {
 		};
 
 		return file;
-
 	}
 
 	private static byte[] readFromInputStream(TransparentFileInputStream is) throws CardException, SignatureCardException {
diff --git a/smcc/src/main/resources/at/gv/egiz/smcc/FINEIDCard.properties b/smcc/src/main/resources/at/gv/egiz/smcc/FINEIDCard.properties
new file mode 100644
index 00000000..7729e647
--- /dev/null
+++ b/smcc/src/main/resources/at/gv/egiz/smcc/FINEIDCard.properties
@@ -0,0 +1,3 @@
+#pin.name=PIN

+sig.pin.name=PIN 2

+sig.pin.length=6-8
\ No newline at end of file