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Diffstat (limited to 'smcc/src/main/java/at/gv/egiz/smcc/FINEIDCard.java')
-rw-r--r--smcc/src/main/java/at/gv/egiz/smcc/FINEIDCard.java737
1 files changed, 372 insertions, 365 deletions
diff --git a/smcc/src/main/java/at/gv/egiz/smcc/FINEIDCard.java b/smcc/src/main/java/at/gv/egiz/smcc/FINEIDCard.java
index 92371d8e..4e911d1c 100644
--- a/smcc/src/main/java/at/gv/egiz/smcc/FINEIDCard.java
+++ b/smcc/src/main/java/at/gv/egiz/smcc/FINEIDCard.java
@@ -1,365 +1,372 @@
-/*
- * 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.cio.CIOCertificate;
-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
- .getPrKDReferences().get(0));
- 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 the associated PIN (authId must match)
- FINEIDAODirectory ef_aod = new FINEIDAODirectory(ef_od.getAODReferences().get(0));
- 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.getCDReferences().size(); i++) {
-
- FINEIDCIOCertificateDirectory ef_cd = new FINEIDCIOCertificateDirectory(
- ef_od.getCDReferences().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;
- }
-
-}
+/*
+ * Copyright 2011 by Graz University of Technology, Austria
+ * MOCCA has been developed by the E-Government Innovation Center EGIZ, a joint
+ * initiative of the Federal Chancellery Austria and Graz University of Technology.
+ *
+ * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
+ * the European Commission - subsequent versions of the EUPL (the "Licence");
+ * You may not use this work except in compliance with the Licence.
+ * You may obtain a copy of the Licence at:
+ * http://www.osor.eu/eupl/
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the Licence is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the Licence for the specific language governing permissions and
+ * limitations under the Licence.
+ *
+ * This product combines work with different licenses. See the "NOTICE" text
+ * file for details on the various modules and licenses.
+ * The "NOTICE" text file is part of the distribution. Any derivative works
+ * that you distribute must include a readable copy of the "NOTICE" text file.
+ */
+
+
+package at.gv.egiz.smcc;
+
+import at.gv.egiz.smcc.cio.CIOCertificate;
+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
+ .getPrKDReferences().get(0));
+ 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 the associated PIN (authId must match)
+ FINEIDAODirectory ef_aod = new FINEIDAODirectory(ef_od.getAODReferences().get(0));
+ 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.getCDReferences().size(); i++) {
+
+ FINEIDCIOCertificateDirectory ef_cd = new FINEIDCIOCertificateDirectory(
+ ef_od.getCDReferences().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;
+ }
+
+}