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850 lines
30 KiB
Java
850 lines
30 KiB
Java
/*
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* Copyright (c) 1997, 2022, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package sun.security.provider;
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import java.io.*;
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import java.security.*;
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import java.security.cert.Certificate;
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import java.security.cert.CertificateFactory;
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import java.security.cert.CertificateException;
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import java.util.*;
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import static java.nio.charset.StandardCharsets.UTF_8;
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import sun.security.pkcs.EncryptedPrivateKeyInfo;
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import sun.security.pkcs12.PKCS12KeyStore;
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import sun.security.util.Debug;
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import sun.security.util.IOUtils;
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import sun.security.util.KeyStoreDelegator;
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/**
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* This class provides the keystore implementation referred to as "JKS".
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*
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* @author Jan Luehe
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* @author David Brownell
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*
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*
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* @see KeyProtector
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* @see java.security.KeyStoreSpi
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* @see KeyTool
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*
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* @since 1.2
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*/
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public abstract sealed class JavaKeyStore extends KeyStoreSpi {
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// regular JKS
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public static final class JKS extends JavaKeyStore {
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String convertAlias(String alias) {
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return alias.toLowerCase(Locale.ENGLISH);
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}
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}
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// special JKS that uses case sensitive aliases
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public static final class CaseExactJKS extends JavaKeyStore {
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String convertAlias(String alias) {
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return alias;
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}
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}
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// special JKS that supports JKS and PKCS12 file formats
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public static final class DualFormatJKS extends KeyStoreDelegator {
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public DualFormatJKS() {
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super("JKS", JKS.class, "PKCS12", PKCS12KeyStore.class);
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}
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/**
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* Probe the first few bytes of the keystore data stream for a valid
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* JKS keystore encoding.
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*/
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@Override
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public boolean engineProbe(InputStream stream) throws IOException {
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DataInputStream dataStream;
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if (stream instanceof DataInputStream) {
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dataStream = (DataInputStream)stream;
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} else {
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dataStream = new DataInputStream(stream);
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}
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return MAGIC == dataStream.readInt();
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}
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}
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private static final Debug debug = Debug.getInstance("keystore");
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private static final int MAGIC = 0xfeedfeed;
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private static final int VERSION_1 = 0x01;
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private static final int VERSION_2 = 0x02;
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// Private keys and their supporting certificate chains
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private static class KeyEntry {
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Date date; // the creation date of this entry
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byte[] protectedPrivKey;
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Certificate[] chain;
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};
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// Trusted certificates
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private static class TrustedCertEntry {
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Date date; // the creation date of this entry
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Certificate cert;
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};
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/**
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* Private keys and certificates are stored in a hashtable.
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* Hash entries are keyed by alias names.
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*/
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private final Hashtable<String, Object> entries;
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JavaKeyStore() {
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entries = new Hashtable<String, Object>();
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}
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// convert an alias to internal form, overridden in subclasses:
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// lower case for regular JKS
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// original string for CaseExactJKS
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abstract String convertAlias(String alias);
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/**
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* Returns the key associated with the given alias, using the given
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* password to recover it.
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*
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* @param alias the alias name
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* @param password the password for recovering the key
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*
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* @return the requested key, or null if the given alias does not exist
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* or does not identify a <i>key entry</i>.
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*
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* @exception NoSuchAlgorithmException if the algorithm for recovering the
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* key cannot be found
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* @exception UnrecoverableKeyException if the key cannot be recovered
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* (e.g., the given password is wrong).
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*/
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public Key engineGetKey(String alias, char[] password)
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throws NoSuchAlgorithmException, UnrecoverableKeyException
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{
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Object entry = entries.get(convertAlias(alias));
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if (entry == null || !(entry instanceof KeyEntry)) {
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return null;
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}
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if (password == null) {
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throw new UnrecoverableKeyException("Password must not be null");
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}
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byte[] passwordBytes = convertToBytes(password);
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KeyProtector keyProtector = new KeyProtector(passwordBytes);
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byte[] encrBytes = ((KeyEntry)entry).protectedPrivKey;
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EncryptedPrivateKeyInfo encrInfo;
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try {
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encrInfo = new EncryptedPrivateKeyInfo(encrBytes);
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return keyProtector.recover(encrInfo);
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} catch (IOException ioe) {
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throw new UnrecoverableKeyException("Private key not stored as "
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+ "PKCS #8 "
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+ "EncryptedPrivateKeyInfo");
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} finally {
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Arrays.fill(passwordBytes, (byte) 0x00);
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}
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}
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/**
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* Returns the certificate chain associated with the given alias.
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*
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* @param alias the alias name
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*
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* @return the certificate chain (ordered with the user's certificate first
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* and the root certificate authority last), or null if the given alias
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* does not exist or does not contain a certificate chain (i.e., the given
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* alias identifies either a <i>trusted certificate entry</i> or a
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* <i>key entry</i> without a certificate chain).
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*/
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public Certificate[] engineGetCertificateChain(String alias) {
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Object entry = entries.get(convertAlias(alias));
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if (entry != null && entry instanceof KeyEntry) {
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if (((KeyEntry)entry).chain == null) {
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return null;
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} else {
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return ((KeyEntry)entry).chain.clone();
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}
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} else {
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return null;
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}
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}
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/**
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* Returns the certificate associated with the given alias.
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*
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* <p>If the given alias name identifies a
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* <i>trusted certificate entry</i>, the certificate associated with that
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* entry is returned. If the given alias name identifies a
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* <i>key entry</i>, the first element of the certificate chain of that
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* entry is returned, or null if that entry does not have a certificate
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* chain.
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*
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* @param alias the alias name
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*
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* @return the certificate, or null if the given alias does not exist or
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* does not contain a certificate.
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*/
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public Certificate engineGetCertificate(String alias) {
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Object entry = entries.get(convertAlias(alias));
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if (entry != null) {
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if (entry instanceof TrustedCertEntry) {
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return ((TrustedCertEntry)entry).cert;
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} else {
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if (((KeyEntry)entry).chain == null) {
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return null;
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} else {
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return ((KeyEntry)entry).chain[0];
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}
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}
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} else {
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return null;
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}
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}
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/**
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* Returns the creation date of the entry identified by the given alias.
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*
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* @param alias the alias name
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*
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* @return the creation date of this entry, or null if the given alias does
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* not exist
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*/
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public Date engineGetCreationDate(String alias) {
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Object entry = entries.get(convertAlias(alias));
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if (entry != null) {
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if (entry instanceof TrustedCertEntry) {
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return new Date(((TrustedCertEntry)entry).date.getTime());
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} else {
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return new Date(((KeyEntry)entry).date.getTime());
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}
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} else {
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return null;
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}
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}
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/**
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* Assigns the given private key to the given alias, protecting
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* it with the given password as defined in PKCS8.
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*
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* <p>The given java.security.PrivateKey <code>key</code> must
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* be accompanied by a certificate chain certifying the
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* corresponding public key.
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*
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* <p>If the given alias already exists, the keystore information
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* associated with it is overridden by the given key and certificate
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* chain.
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*
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* @param alias the alias name
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* @param key the private key to be associated with the alias
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* @param password the password to protect the key
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* @param chain the certificate chain for the corresponding public
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* key (only required if the given key is of type
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* <code>java.security.PrivateKey</code>).
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*
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* @exception KeyStoreException if the given key is not a private key,
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* cannot be protected, or this operation fails for some other reason
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*/
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public void engineSetKeyEntry(String alias, Key key, char[] password,
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Certificate[] chain)
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throws KeyStoreException
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{
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KeyProtector keyProtector;
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byte[] passwordBytes = null;
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if (!(key instanceof java.security.PrivateKey)) {
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throw new KeyStoreException("Cannot store non-PrivateKeys");
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}
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if (password == null) {
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throw new KeyStoreException("password can't be null");
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}
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try {
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synchronized(entries) {
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KeyEntry entry = new KeyEntry();
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entry.date = new Date();
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// Protect the encoding of the key
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passwordBytes = convertToBytes(password);
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keyProtector = new KeyProtector(passwordBytes);
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entry.protectedPrivKey = keyProtector.protect(key);
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// clone the chain
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if ((chain != null) &&
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(chain.length != 0)) {
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entry.chain = chain.clone();
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} else {
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entry.chain = null;
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}
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entries.put(convertAlias(alias), entry);
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}
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} catch (NoSuchAlgorithmException nsae) {
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throw new KeyStoreException("Key protection algorithm not found");
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} finally {
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if (passwordBytes != null)
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Arrays.fill(passwordBytes, (byte) 0x00);
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}
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}
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/**
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* Assigns the given key (that has already been protected) to the given
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* alias.
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*
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* <p>If the protected key is of type
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* <code>java.security.PrivateKey</code>, it must be accompanied by a
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* certificate chain certifying the corresponding public key. If the
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* underlying keystore implementation is of type <code>jks</code>,
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* <code>key</code> must be encoded as an
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* <code>EncryptedPrivateKeyInfo</code> as defined in the PKCS #8 standard.
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*
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* <p>If the given alias already exists, the keystore information
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* associated with it is overridden by the given key (and possibly
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* certificate chain).
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*
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* @param alias the alias name
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* @param key the key (in protected format) to be associated with the alias
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* @param chain the certificate chain for the corresponding public
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* key (only useful if the protected key is of type
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* <code>java.security.PrivateKey</code>).
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*
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* @exception KeyStoreException if this operation fails.
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*/
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public void engineSetKeyEntry(String alias, byte[] key,
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Certificate[] chain)
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throws KeyStoreException
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{
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synchronized(entries) {
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// key must be encoded as EncryptedPrivateKeyInfo as defined in
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// PKCS#8
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try {
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new EncryptedPrivateKeyInfo(key);
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} catch (IOException ioe) {
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throw new KeyStoreException("key is not encoded as "
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+ "EncryptedPrivateKeyInfo");
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}
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KeyEntry entry = new KeyEntry();
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entry.date = new Date();
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entry.protectedPrivKey = key.clone();
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if ((chain != null) &&
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(chain.length != 0)) {
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entry.chain = chain.clone();
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} else {
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entry.chain = null;
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}
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entries.put(convertAlias(alias), entry);
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}
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}
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/**
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* Assigns the given certificate to the given alias.
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*
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* <p>If the given alias already exists in this keystore and identifies a
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* <i>trusted certificate entry</i>, the certificate associated with it is
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* overridden by the given certificate.
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*
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* @param alias the alias name
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* @param cert the certificate
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*
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* @exception KeyStoreException if the given alias already exists and does
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* not identify a <i>trusted certificate entry</i>, or this operation
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* fails for some other reason.
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*/
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public void engineSetCertificateEntry(String alias, Certificate cert)
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throws KeyStoreException
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{
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synchronized(entries) {
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Object entry = entries.get(convertAlias(alias));
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if ((entry != null) && (entry instanceof KeyEntry)) {
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throw new KeyStoreException
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("Cannot overwrite own certificate");
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}
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TrustedCertEntry trustedCertEntry = new TrustedCertEntry();
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trustedCertEntry.cert = cert;
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trustedCertEntry.date = new Date();
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entries.put(convertAlias(alias), trustedCertEntry);
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}
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}
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/**
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* Deletes the entry identified by the given alias from this keystore.
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*
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* @param alias the alias name
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*
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* @exception KeyStoreException if the entry cannot be removed.
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*/
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public void engineDeleteEntry(String alias)
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throws KeyStoreException
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{
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synchronized(entries) {
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entries.remove(convertAlias(alias));
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}
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}
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/**
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* Lists all the alias names of this keystore.
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*
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* @return enumeration of the alias names
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*/
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public Enumeration<String> engineAliases() {
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return entries.keys();
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}
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/**
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* Checks if the given alias exists in this keystore.
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*
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* @param alias the alias name
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*
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* @return true if the alias exists, false otherwise
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*/
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public boolean engineContainsAlias(String alias) {
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return entries.containsKey(convertAlias(alias));
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}
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/**
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* Retrieves the number of entries in this keystore.
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*
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* @return the number of entries in this keystore
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*/
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public int engineSize() {
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return entries.size();
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}
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/**
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* Returns true if the entry identified by the given alias is a
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* <i>key entry</i>, and false otherwise.
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*
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* @return true if the entry identified by the given alias is a
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* <i>key entry</i>, false otherwise.
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*/
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public boolean engineIsKeyEntry(String alias) {
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Object entry = entries.get(convertAlias(alias));
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if ((entry != null) && (entry instanceof KeyEntry)) {
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return true;
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} else {
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return false;
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}
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}
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/**
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* Returns true if the entry identified by the given alias is a
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* <i>trusted certificate entry</i>, and false otherwise.
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*
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* @return true if the entry identified by the given alias is a
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* <i>trusted certificate entry</i>, false otherwise.
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*/
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public boolean engineIsCertificateEntry(String alias) {
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Object entry = entries.get(convertAlias(alias));
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if ((entry != null) && (entry instanceof TrustedCertEntry)) {
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return true;
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} else {
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return false;
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}
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}
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/**
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* Returns the (alias) name of the first keystore entry whose certificate
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* matches the given certificate.
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*
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* <p>This method attempts to match the given certificate with each
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* keystore entry. If the entry being considered
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* is a <i>trusted certificate entry</i>, the given certificate is
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* compared to that entry's certificate. If the entry being considered is
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* a <i>key entry</i>, the given certificate is compared to the first
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* element of that entry's certificate chain (if a chain exists).
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*
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* @param cert the certificate to match with.
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*
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* @return the (alias) name of the first entry with matching certificate,
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* or null if no such entry exists in this keystore.
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*/
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public String engineGetCertificateAlias(Certificate cert) {
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Certificate certElem;
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for (Enumeration<String> e = entries.keys(); e.hasMoreElements(); ) {
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String alias = e.nextElement();
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Object entry = entries.get(alias);
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if (entry instanceof TrustedCertEntry) {
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certElem = ((TrustedCertEntry)entry).cert;
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} else if (((KeyEntry)entry).chain != null) {
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certElem = ((KeyEntry)entry).chain[0];
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} else {
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continue;
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}
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if (certElem.equals(cert)) {
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return alias;
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}
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}
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return null;
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}
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/**
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* Stores this keystore to the given output stream, and protects its
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* integrity with the given password.
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*
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* @param stream the output stream to which this keystore is written.
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* @param password the password to generate the keystore integrity check
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*
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* @exception IOException if there was an I/O problem with data
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* @exception NoSuchAlgorithmException if the appropriate data integrity
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* algorithm could not be found
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* @exception CertificateException if any of the certificates included in
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* the keystore data could not be stored
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*/
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public void engineStore(OutputStream stream, char[] password)
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throws IOException, NoSuchAlgorithmException, CertificateException
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{
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synchronized(entries) {
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/*
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* KEYSTORE FORMAT:
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*
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* Magic number (big-endian integer),
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* Version of this file format (big-endian integer),
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*
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* Count (big-endian integer),
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* followed by "count" instances of either:
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*
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* {
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* tag=1 (big-endian integer),
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* alias (UTF string)
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* timestamp
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* encrypted private-key info according to PKCS #8
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* (integer length followed by encoding)
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* cert chain (integer count, then certs; for each cert,
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* integer length followed by encoding)
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* }
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*
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* or:
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*
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* {
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* tag=2 (big-endian integer)
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* alias (UTF string)
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* timestamp
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* cert (integer length followed by encoding)
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* }
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*
|
|
* ended by a keyed SHA1 hash (bytes only) of
|
|
* { password + extra data + preceding body }
|
|
*/
|
|
|
|
// password is mandatory when storing
|
|
if (password == null) {
|
|
throw new IllegalArgumentException("password can't be null");
|
|
}
|
|
|
|
byte[] encoded; // the certificate encoding
|
|
|
|
MessageDigest md = getPreKeyedHash(password);
|
|
DataOutputStream dos
|
|
= new DataOutputStream(new DigestOutputStream(stream, md));
|
|
|
|
dos.writeInt(MAGIC);
|
|
// always write the latest version
|
|
dos.writeInt(VERSION_2);
|
|
|
|
dos.writeInt(entries.size());
|
|
|
|
for (Enumeration<String> e = entries.keys(); e.hasMoreElements();) {
|
|
|
|
String alias = e.nextElement();
|
|
Object entry = entries.get(alias);
|
|
|
|
if (entry instanceof KeyEntry) {
|
|
|
|
// Store this entry as a KeyEntry
|
|
dos.writeInt(1);
|
|
|
|
// Write the alias
|
|
dos.writeUTF(alias);
|
|
|
|
// Write the (entry creation) date
|
|
dos.writeLong(((KeyEntry)entry).date.getTime());
|
|
|
|
// Write the protected private key
|
|
dos.writeInt(((KeyEntry)entry).protectedPrivKey.length);
|
|
dos.write(((KeyEntry)entry).protectedPrivKey);
|
|
|
|
// Write the certificate chain
|
|
int chainLen;
|
|
if (((KeyEntry)entry).chain == null) {
|
|
chainLen = 0;
|
|
} else {
|
|
chainLen = ((KeyEntry)entry).chain.length;
|
|
}
|
|
dos.writeInt(chainLen);
|
|
for (int i = 0; i < chainLen; i++) {
|
|
encoded = ((KeyEntry)entry).chain[i].getEncoded();
|
|
dos.writeUTF(((KeyEntry)entry).chain[i].getType());
|
|
dos.writeInt(encoded.length);
|
|
dos.write(encoded);
|
|
}
|
|
} else {
|
|
|
|
// Store this entry as a certificate
|
|
dos.writeInt(2);
|
|
|
|
// Write the alias
|
|
dos.writeUTF(alias);
|
|
|
|
// Write the (entry creation) date
|
|
dos.writeLong(((TrustedCertEntry)entry).date.getTime());
|
|
|
|
// Write the trusted certificate
|
|
encoded = ((TrustedCertEntry)entry).cert.getEncoded();
|
|
dos.writeUTF(((TrustedCertEntry)entry).cert.getType());
|
|
dos.writeInt(encoded.length);
|
|
dos.write(encoded);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Write the keyed hash which is used to detect tampering with
|
|
* the keystore (such as deleting or modifying key or
|
|
* certificate entries).
|
|
*/
|
|
byte[] digest = md.digest();
|
|
|
|
dos.write(digest);
|
|
dos.flush();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Loads the keystore from the given input stream.
|
|
*
|
|
* <p>If a password is given, it is used to check the integrity of the
|
|
* keystore data. Otherwise, the integrity of the keystore is not checked.
|
|
*
|
|
* @param stream the input stream from which the keystore is loaded
|
|
* @param password the (optional) password used to check the integrity of
|
|
* the keystore.
|
|
*
|
|
* @exception IOException if there is an I/O or format problem with the
|
|
* keystore data
|
|
* @exception NoSuchAlgorithmException if the algorithm used to check
|
|
* the integrity of the keystore cannot be found
|
|
* @exception CertificateException if any of the certificates in the
|
|
* keystore could not be loaded
|
|
*/
|
|
public void engineLoad(InputStream stream, char[] password)
|
|
throws IOException, NoSuchAlgorithmException, CertificateException
|
|
{
|
|
synchronized(entries) {
|
|
DataInputStream dis;
|
|
MessageDigest md = null;
|
|
CertificateFactory cf = null;
|
|
Hashtable<String, CertificateFactory> cfs = null;
|
|
ByteArrayInputStream bais = null;
|
|
byte[] encoded = null;
|
|
int trustedKeyCount = 0, privateKeyCount = 0;
|
|
|
|
if (stream == null)
|
|
return;
|
|
|
|
if (password != null) {
|
|
md = getPreKeyedHash(password);
|
|
dis = new DataInputStream(new DigestInputStream(stream, md));
|
|
} else {
|
|
dis = new DataInputStream(stream);
|
|
}
|
|
|
|
// Body format: see store method
|
|
|
|
int xMagic = dis.readInt();
|
|
int xVersion = dis.readInt();
|
|
|
|
if (xMagic!=MAGIC ||
|
|
(xVersion!=VERSION_1 && xVersion!=VERSION_2)) {
|
|
throw new IOException("Invalid keystore format");
|
|
}
|
|
|
|
if (xVersion == VERSION_1) {
|
|
cf = CertificateFactory.getInstance("X509");
|
|
} else {
|
|
// version 2
|
|
cfs = new Hashtable<String, CertificateFactory>(3);
|
|
}
|
|
|
|
entries.clear();
|
|
int count = dis.readInt();
|
|
|
|
for (int i = 0; i < count; i++) {
|
|
int tag;
|
|
String alias;
|
|
|
|
tag = dis.readInt();
|
|
|
|
if (tag == 1) { // private key entry
|
|
privateKeyCount++;
|
|
KeyEntry entry = new KeyEntry();
|
|
|
|
// Read the alias
|
|
alias = dis.readUTF();
|
|
|
|
// Read the (entry creation) date
|
|
entry.date = new Date(dis.readLong());
|
|
|
|
// Read the private key
|
|
entry.protectedPrivKey =
|
|
IOUtils.readExactlyNBytes(dis, dis.readInt());
|
|
|
|
// Read the certificate chain
|
|
int numOfCerts = dis.readInt();
|
|
if (numOfCerts > 0) {
|
|
List<Certificate> certs = new ArrayList<>(
|
|
numOfCerts > 10 ? 10 : numOfCerts);
|
|
for (int j = 0; j < numOfCerts; j++) {
|
|
if (xVersion == 2) {
|
|
// read the certificate type, and instantiate a
|
|
// certificate factory of that type (reuse
|
|
// existing factory if possible)
|
|
String certType = dis.readUTF();
|
|
if (cfs.containsKey(certType)) {
|
|
// reuse certificate factory
|
|
cf = cfs.get(certType);
|
|
} else {
|
|
// create new certificate factory
|
|
cf = CertificateFactory.getInstance(certType);
|
|
// store the certificate factory so we can
|
|
// reuse it later
|
|
cfs.put(certType, cf);
|
|
}
|
|
}
|
|
// instantiate the certificate
|
|
encoded = IOUtils.readExactlyNBytes(dis, dis.readInt());
|
|
bais = new ByteArrayInputStream(encoded);
|
|
certs.add(cf.generateCertificate(bais));
|
|
bais.close();
|
|
}
|
|
// We can be sure now that numOfCerts of certs are read
|
|
entry.chain = certs.toArray(new Certificate[numOfCerts]);
|
|
}
|
|
|
|
// Add the entry to the list
|
|
entries.put(alias, entry);
|
|
|
|
} else if (tag == 2) { // trusted certificate entry
|
|
trustedKeyCount++;
|
|
TrustedCertEntry entry = new TrustedCertEntry();
|
|
|
|
// Read the alias
|
|
alias = dis.readUTF();
|
|
|
|
// Read the (entry creation) date
|
|
entry.date = new Date(dis.readLong());
|
|
|
|
// Read the trusted certificate
|
|
if (xVersion == 2) {
|
|
// read the certificate type, and instantiate a
|
|
// certificate factory of that type (reuse
|
|
// existing factory if possible)
|
|
String certType = dis.readUTF();
|
|
if (cfs.containsKey(certType)) {
|
|
// reuse certificate factory
|
|
cf = cfs.get(certType);
|
|
} else {
|
|
// create new certificate factory
|
|
cf = CertificateFactory.getInstance(certType);
|
|
// store the certificate factory so we can
|
|
// reuse it later
|
|
cfs.put(certType, cf);
|
|
}
|
|
}
|
|
encoded = IOUtils.readExactlyNBytes(dis, dis.readInt());
|
|
bais = new ByteArrayInputStream(encoded);
|
|
entry.cert = cf.generateCertificate(bais);
|
|
bais.close();
|
|
|
|
// Add the entry to the list
|
|
entries.put(alias, entry);
|
|
|
|
} else {
|
|
throw new IOException("Unrecognized keystore entry: " +
|
|
tag);
|
|
}
|
|
}
|
|
|
|
if (debug != null) {
|
|
debug.println("JavaKeyStore load: private key count: " +
|
|
privateKeyCount + ". trusted key count: " + trustedKeyCount);
|
|
}
|
|
|
|
/*
|
|
* If a password has been provided, we check the keyed digest
|
|
* at the end. If this check fails, the store has been tampered
|
|
* with
|
|
*/
|
|
if (password != null) {
|
|
byte[] computed = md.digest();
|
|
byte[] actual = IOUtils.readExactlyNBytes(dis, computed.length);
|
|
if (!MessageDigest.isEqual(computed, actual)) {
|
|
Throwable t = new UnrecoverableKeyException
|
|
("Password verification failed");
|
|
throw new IOException
|
|
("Keystore was tampered with, or "
|
|
+ "password was incorrect", t);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* To guard against tampering with the keystore, we append a keyed
|
|
* hash with a bit of extra data.
|
|
*/
|
|
private MessageDigest getPreKeyedHash(char[] password)
|
|
throws NoSuchAlgorithmException
|
|
{
|
|
|
|
MessageDigest md = MessageDigest.getInstance("SHA");
|
|
byte[] passwdBytes = convertToBytes(password);
|
|
md.update(passwdBytes);
|
|
Arrays.fill(passwdBytes, (byte) 0x00);
|
|
md.update("Mighty Aphrodite".getBytes(UTF_8));
|
|
return md;
|
|
}
|
|
|
|
/**
|
|
* Helper method to convert char[] to byte[]
|
|
*/
|
|
|
|
private byte[] convertToBytes(char[] password) {
|
|
int i, j;
|
|
byte[] passwdBytes = new byte[password.length * 2];
|
|
for (i=0, j=0; i<password.length; i++) {
|
|
passwdBytes[j++] = (byte)(password[i] >> 8);
|
|
passwdBytes[j++] = (byte)password[i];
|
|
}
|
|
return passwdBytes;
|
|
}
|
|
}
|