--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/src/share/classes/com/sun/crypto/provider/JceKeyStore.java Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,901 @@
+/*
+ * Copyright 1998-2007 Sun Microsystems, Inc. All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+package com.sun.crypto.provider;
+
+import java.io.*;
+import java.util.*;
+import java.security.DigestInputStream;
+import java.security.DigestOutputStream;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+import java.security.Key;
+import java.security.PrivateKey;
+import java.security.KeyStoreSpi;
+import java.security.KeyStoreException;
+import java.security.UnrecoverableKeyException;
+import java.security.cert.Certificate;
+import java.security.cert.CertificateFactory;
+import java.security.cert.X509Certificate;
+import java.security.cert.CertificateException;
+import java.security.spec.InvalidKeySpecException;
+import javax.crypto.SealedObject;
+
+/**
+ * This class provides the keystore implementation referred to as "jceks".
+ * This implementation strongly protects the keystore private keys using
+ * triple-DES, where the triple-DES encryption/decryption key is derived from
+ * the user's password.
+ * The encrypted private keys are stored in the keystore in a standard format,
+ * namely the <code>EncryptedPrivateKeyInfo</code> format defined in PKCS #8.
+ *
+ * @author Jan Luehe
+ *
+ *
+ * @see java.security.KeyStoreSpi
+ */
+
+public final class JceKeyStore extends KeyStoreSpi {
+
+ private static final int JCEKS_MAGIC = 0xcececece;
+ private static final int JKS_MAGIC = 0xfeedfeed;
+ private static final int VERSION_1 = 0x01;
+ private static final int VERSION_2 = 0x02;
+
+ // Private key and supporting certificate chain
+ private static final class PrivateKeyEntry {
+ Date date; // the creation date of this entry
+ byte[] protectedKey;
+ Certificate chain[];
+ };
+
+ // Secret key
+ private static final class SecretKeyEntry {
+ Date date; // the creation date of this entry
+ SealedObject sealedKey;
+ }
+
+ // Trusted certificate
+ private static final class TrustedCertEntry {
+ Date date; // the creation date of this entry
+ Certificate cert;
+ };
+
+ /**
+ * Private keys and certificates are stored in a hashtable.
+ * Hash entries are keyed by alias names.
+ */
+ private Hashtable entries = new Hashtable();
+
+ /**
+ * Returns the key associated with the given alias, using the given
+ * password to recover it.
+ *
+ * @param alias the alias name
+ * @param password the password for recovering the key
+ *
+ * @return the requested key, or null if the given alias does not exist
+ * or does not identify a <i>key entry</i>.
+ *
+ * @exception NoSuchAlgorithmException if the algorithm for recovering the
+ * key cannot be found
+ * @exception UnrecoverableKeyException if the key cannot be recovered
+ * (e.g., the given password is wrong).
+ */
+ public Key engineGetKey(String alias, char[] password)
+ throws NoSuchAlgorithmException, UnrecoverableKeyException
+ {
+ Key key = null;
+
+ Object entry = entries.get(alias.toLowerCase());
+
+ if (!((entry instanceof PrivateKeyEntry) ||
+ (entry instanceof SecretKeyEntry))) {
+ return null;
+ }
+
+ KeyProtector keyProtector = new KeyProtector(password);
+
+ if (entry instanceof PrivateKeyEntry) {
+ byte[] encrBytes = ((PrivateKeyEntry)entry).protectedKey;
+ EncryptedPrivateKeyInfo encrInfo;
+ try {
+ encrInfo = new EncryptedPrivateKeyInfo(encrBytes);
+ } catch (IOException ioe) {
+ throw new UnrecoverableKeyException("Private key not stored "
+ + "as PKCS #8 " +
+ "EncryptedPrivateKeyInfo");
+ }
+ key = keyProtector.recover(encrInfo);
+ } else {
+ key =
+ keyProtector.unseal(((SecretKeyEntry)entry).sealedKey);
+ }
+
+ return key;
+ }
+
+ /**
+ * Returns the certificate chain associated with the given alias.
+ *
+ * @param alias the alias name
+ *
+ * @return the certificate chain (ordered with the user's certificate first
+ * and the root certificate authority last), or null if the given alias
+ * does not exist or does not contain a certificate chain (i.e., the given
+ * alias identifies either a <i>trusted certificate entry</i> or a
+ * <i>key entry</i> without a certificate chain).
+ */
+ public Certificate[] engineGetCertificateChain(String alias)
+ {
+ Certificate[] chain = null;
+
+ Object entry = entries.get(alias.toLowerCase());
+
+ if ((entry instanceof PrivateKeyEntry)
+ && (((PrivateKeyEntry)entry).chain != null)) {
+ chain = (Certificate[])((PrivateKeyEntry)entry).chain.clone();
+ }
+
+ return chain;
+ }
+
+ /**
+ * Returns the certificate associated with the given alias.
+ *
+ * <p>If the given alias name identifies a
+ * <i>trusted certificate entry</i>, the certificate associated with that
+ * entry is returned. If the given alias name identifies a
+ * <i>key entry</i>, the first element of the certificate chain of that
+ * entry is returned, or null if that entry does not have a certificate
+ * chain.
+ *
+ * @param alias the alias name
+ *
+ * @return the certificate, or null if the given alias does not exist or
+ * does not contain a certificate.
+ */
+ public Certificate engineGetCertificate(String alias) {
+ Certificate cert = null;
+
+ Object entry = entries.get(alias.toLowerCase());
+
+ if (entry != null) {
+ if (entry instanceof TrustedCertEntry) {
+ cert = ((TrustedCertEntry)entry).cert;
+ } else if ((entry instanceof PrivateKeyEntry) &&
+ (((PrivateKeyEntry)entry).chain != null)) {
+ cert = ((PrivateKeyEntry)entry).chain[0];
+ }
+ }
+
+ return cert;
+ }
+
+ /**
+ * Returns the creation date of the entry identified by the given alias.
+ *
+ * @param alias the alias name
+ *
+ * @return the creation date of this entry, or null if the given alias does
+ * not exist
+ */
+ public Date engineGetCreationDate(String alias) {
+ Date date = null;
+
+ Object entry = entries.get(alias.toLowerCase());
+
+ if (entry != null) {
+ // We have to create a new instance of java.util.Date because
+ // dates are not immutable
+ if (entry instanceof TrustedCertEntry) {
+ date = new Date(((TrustedCertEntry)entry).date.getTime());
+ } else if (entry instanceof PrivateKeyEntry) {
+ date = new Date(((PrivateKeyEntry)entry).date.getTime());
+ } else {
+ date = new Date(((SecretKeyEntry)entry).date.getTime());
+ }
+ }
+
+ return date;
+ }
+
+ /**
+ * Assigns the given key to the given alias, protecting it with the given
+ * password.
+ *
+ * <p>If the given key is of type <code>java.security.PrivateKey</code>,
+ * it must be accompanied by a certificate chain certifying the
+ * corresponding public key.
+ *
+ * <p>If the given alias already exists, the keystore information
+ * associated with it is overridden by the given key (and possibly
+ * certificate chain).
+ *
+ * @param alias the alias name
+ * @param key the key to be associated with the alias
+ * @param password the password to protect the key
+ * @param chain the certificate chain for the corresponding public
+ * key (only required if the given key is of type
+ * <code>java.security.PrivateKey</code>).
+ *
+ * @exception KeyStoreException if the given key cannot be protected, or
+ * this operation fails for some other reason
+ */
+ public void engineSetKeyEntry(String alias, Key key, char[] password,
+ Certificate[] chain)
+ throws KeyStoreException
+ {
+ synchronized(entries) {
+ try {
+ KeyProtector keyProtector = new KeyProtector(password);
+
+ if (key instanceof PrivateKey) {
+ PrivateKeyEntry entry = new PrivateKeyEntry();
+ entry.date = new Date();
+
+ // protect the private key
+ entry.protectedKey = keyProtector.protect((PrivateKey)key);
+
+ // clone the chain
+ if ((chain != null) &&
+ (chain.length !=0)) {
+ entry.chain = (Certificate[])chain.clone();
+ } else {
+ entry.chain = null;
+ }
+
+ // store the entry
+ entries.put(alias.toLowerCase(), entry);
+
+ } else {
+ SecretKeyEntry entry = new SecretKeyEntry();
+ entry.date = new Date();
+
+ // seal and store the key
+ entry.sealedKey = keyProtector.seal(key);
+ entries.put(alias.toLowerCase(), entry);
+ }
+
+ } catch (Exception e) {
+ throw new KeyStoreException(e.getMessage());
+ }
+ }
+ }
+
+ /**
+ * Assigns the given key (that has already been protected) to the given
+ * alias.
+ *
+ * <p>If the protected key is of type
+ * <code>java.security.PrivateKey</code>,
+ * it must be accompanied by a certificate chain certifying the
+ * corresponding public key.
+ *
+ * <p>If the given alias already exists, the keystore information
+ * associated with it is overridden by the given key (and possibly
+ * certificate chain).
+ *
+ * @param alias the alias name
+ * @param key the key (in protected format) to be associated with the alias
+ * @param chain the certificate chain for the corresponding public
+ * key (only useful if the protected key is of type
+ * <code>java.security.PrivateKey</code>).
+ *
+ * @exception KeyStoreException if this operation fails.
+ */
+ public void engineSetKeyEntry(String alias, byte[] key,
+ Certificate[] chain)
+ throws KeyStoreException
+ {
+ synchronized(entries) {
+ // We assume it's a private key, because there is no standard
+ // (ASN.1) encoding format for wrapped secret keys
+ PrivateKeyEntry entry = new PrivateKeyEntry();
+ entry.date = new Date();
+
+ entry.protectedKey = (byte[])key.clone();
+ if ((chain != null) &&
+ (chain.length != 0)) {
+ entry.chain = (Certificate[])chain.clone();
+ } else {
+ entry.chain = null;
+ }
+
+ entries.put(alias.toLowerCase(), entry);
+ }
+ }
+
+ /**
+ * Assigns the given certificate to the given alias.
+ *
+ * <p>If the given alias already exists in this keystore and identifies a
+ * <i>trusted certificate entry</i>, the certificate associated with it is
+ * overridden by the given certificate.
+ *
+ * @param alias the alias name
+ * @param cert the certificate
+ *
+ * @exception KeyStoreException if the given alias already exists and does
+ * not identify a <i>trusted certificate entry</i>, or this operation
+ * fails for some other reason.
+ */
+ public void engineSetCertificateEntry(String alias, Certificate cert)
+ throws KeyStoreException
+ {
+ synchronized(entries) {
+
+ Object entry = entries.get(alias.toLowerCase());
+ if (entry != null) {
+ if (entry instanceof PrivateKeyEntry) {
+ throw new KeyStoreException("Cannot overwrite own "
+ + "certificate");
+ } else if (entry instanceof SecretKeyEntry) {
+ throw new KeyStoreException("Cannot overwrite secret key");
+ }
+ }
+
+ TrustedCertEntry trustedCertEntry = new TrustedCertEntry();
+ trustedCertEntry.cert = cert;
+ trustedCertEntry.date = new Date();
+ entries.put(alias.toLowerCase(), trustedCertEntry);
+ }
+ }
+
+ /**
+ * Deletes the entry identified by the given alias from this keystore.
+ *
+ * @param alias the alias name
+ *
+ * @exception KeyStoreException if the entry cannot be removed.
+ */
+ public void engineDeleteEntry(String alias)
+ throws KeyStoreException
+ {
+ synchronized(entries) {
+ entries.remove(alias.toLowerCase());
+ }
+ }
+
+ /**
+ * Lists all the alias names of this keystore.
+ *
+ * @return enumeration of the alias names
+ */
+ public Enumeration engineAliases() {
+ return entries.keys();
+ }
+
+ /**
+ * Checks if the given alias exists in this keystore.
+ *
+ * @param alias the alias name
+ *
+ * @return true if the alias exists, false otherwise
+ */
+ public boolean engineContainsAlias(String alias) {
+ return entries.containsKey(alias.toLowerCase());
+ }
+
+ /**
+ * Retrieves the number of entries in this keystore.
+ *
+ * @return the number of entries in this keystore
+ */
+ public int engineSize() {
+ return entries.size();
+ }
+
+ /**
+ * Returns true if the entry identified by the given alias is a
+ * <i>key entry</i>, and false otherwise.
+ *
+ * @return true if the entry identified by the given alias is a
+ * <i>key entry</i>, false otherwise.
+ */
+ public boolean engineIsKeyEntry(String alias) {
+ boolean isKey = false;
+
+ Object entry = entries.get(alias.toLowerCase());
+ if ((entry instanceof PrivateKeyEntry)
+ || (entry instanceof SecretKeyEntry)) {
+ isKey = true;
+ }
+
+ return isKey;
+ }
+
+ /**
+ * Returns true if the entry identified by the given alias is a
+ * <i>trusted certificate entry</i>, and false otherwise.
+ *
+ * @return true if the entry identified by the given alias is a
+ * <i>trusted certificate entry</i>, false otherwise.
+ */
+ public boolean engineIsCertificateEntry(String alias) {
+ boolean isCert = false;
+ Object entry = entries.get(alias.toLowerCase());
+ if (entry instanceof TrustedCertEntry) {
+ isCert = true;
+ }
+ return isCert;
+ }
+
+ /**
+ * Returns the (alias) name of the first keystore entry whose certificate
+ * matches the given certificate.
+ *
+ * <p>This method attempts to match the given certificate with each
+ * keystore entry. If the entry being considered
+ * is a <i>trusted certificate entry</i>, the given certificate is
+ * compared to that entry's certificate. If the entry being considered is
+ * a <i>key entry</i>, the given certificate is compared to the first
+ * element of that entry's certificate chain (if a chain exists).
+ *
+ * @param cert the certificate to match with.
+ *
+ * @return the (alias) name of the first entry with matching certificate,
+ * or null if no such entry exists in this keystore.
+ */
+ public String engineGetCertificateAlias(Certificate cert) {
+ Certificate certElem;
+
+ Enumeration e = entries.keys();
+ while (e.hasMoreElements()) {
+ String alias = (String)e.nextElement();
+ Object entry = entries.get(alias);
+ if (entry instanceof TrustedCertEntry) {
+ certElem = ((TrustedCertEntry)entry).cert;
+ } else if ((entry instanceof PrivateKeyEntry) &&
+ (((PrivateKeyEntry)entry).chain != null)) {
+ certElem = ((PrivateKeyEntry)entry).chain[0];
+ } else {
+ continue;
+ }
+ if (certElem.equals(cert)) {
+ return alias;
+ }
+ }
+ return null;
+ }
+
+ /**
+ * Stores this keystore to the given output stream, and protects its
+ * integrity with the given password.
+ *
+ * @param stream the output stream to which this keystore is written.
+ * @param password the password to generate the keystore integrity check
+ *
+ * @exception IOException if there was an I/O problem with data
+ * @exception NoSuchAlgorithmException if the appropriate data integrity
+ * algorithm could not be found
+ * @exception CertificateException if any of the certificates included in
+ * the keystore data could not be stored
+ */
+ public void engineStore(OutputStream stream, char[] password)
+ throws IOException, NoSuchAlgorithmException, CertificateException
+ {
+ synchronized(entries) {
+ /*
+ * KEYSTORE FORMAT:
+ *
+ * Magic number (big-endian integer),
+ * Version of this file format (big-endian integer),
+ *
+ * Count (big-endian integer),
+ * followed by "count" instances of either:
+ *
+ * {
+ * tag=1 (big-endian integer)
+ * alias (UTF string)
+ * timestamp
+ * encrypted private-key info according to PKCS #8
+ * (integer length followed by encoding)
+ * cert chain (integer count followed by certs;
+ * for each cert: type UTF string, followed by integer
+ * length, followed by encoding)
+ * }
+ *
+ * or:
+ *
+ * {
+ * tag=2 (big-endian integer)
+ * alias (UTF string)
+ * timestamp
+ * cert (type UTF string, followed by integer length,
+ * followed by encoding)
+ * }
+ *
+ * or:
+ *
+ * {
+ * tag=3 (big-endian integer)
+ * alias (UTF string)
+ * timestamp
+ * sealed secret key (in serialized form)
+ * }
+ *
+ * ended by a keyed SHA1 hash (bytes only) of
+ * { password + whitener + 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));
+ // NOTE: don't pass dos to oos at this point or it'll corrupt
+ // the keystore!!!
+ ObjectOutputStream oos = null;
+ try {
+ dos.writeInt(JCEKS_MAGIC);
+ dos.writeInt(VERSION_2); // always write the latest version
+
+ dos.writeInt(entries.size());
+
+ Enumeration e = entries.keys();
+ while (e.hasMoreElements()) {
+
+ String alias = (String)e.nextElement();
+ Object entry = entries.get(alias);
+
+ if (entry instanceof PrivateKeyEntry) {
+
+ PrivateKeyEntry pentry = (PrivateKeyEntry)entry;
+
+ // write PrivateKeyEntry tag
+ dos.writeInt(1);
+
+ // write the alias
+ dos.writeUTF(alias);
+
+ // write the (entry creation) date
+ dos.writeLong(pentry.date.getTime());
+
+ // write the protected private key
+ dos.writeInt(pentry.protectedKey.length);
+ dos.write(pentry.protectedKey);
+
+ // write the certificate chain
+ int chainLen;
+ if (pentry.chain == null) {
+ chainLen = 0;
+ } else {
+ chainLen = pentry.chain.length;
+ }
+ dos.writeInt(chainLen);
+ for (int i = 0; i < chainLen; i++) {
+ encoded = pentry.chain[i].getEncoded();
+ dos.writeUTF(pentry.chain[i].getType());
+ dos.writeInt(encoded.length);
+ dos.write(encoded);
+ }
+
+ } else if (entry instanceof TrustedCertEntry) {
+
+ // write TrustedCertEntry tag
+ 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);
+
+ } else {
+
+ // write SecretKeyEntry tag
+ dos.writeInt(3);
+
+ // write the alias
+ dos.writeUTF(alias);
+
+ // write the (entry creation) date
+ dos.writeLong(((SecretKeyEntry)entry).date.getTime());
+
+ // write the sealed key
+ oos = new ObjectOutputStream(dos);
+ oos.writeObject(((SecretKeyEntry)entry).sealedKey);
+ // NOTE: don't close oos here since we are still
+ // using dos!!!
+ }
+ }
+
+ /*
+ * 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();
+ } finally {
+ if (oos != null) {
+ oos.close();
+ } else {
+ dos.close();
+ }
+ }
+ }
+ }
+
+ /**
+ * 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 cfs = null;
+ ByteArrayInputStream bais = null;
+ byte[] encoded = null;
+
+ if (stream == null)
+ return;
+
+ if (password != null) {
+ md = getPreKeyedHash(password);
+ dis = new DataInputStream(new DigestInputStream(stream, md));
+ } else {
+ dis = new DataInputStream(stream);
+ }
+ // NOTE: don't pass dis to ois at this point or it'll fail to load
+ // the keystore!!!
+ ObjectInputStream ois = null;
+
+ try {
+ // Body format: see store method
+
+ int xMagic = dis.readInt();
+ int xVersion = dis.readInt();
+
+ // Accept the following keystore implementations:
+ // - JCEKS (this implementation), versions 1 and 2
+ // - JKS (Sun's keystore implementation in JDK 1.2),
+ // versions 1 and 2
+ if (((xMagic != JCEKS_MAGIC) && (xMagic != JKS_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(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
+
+ PrivateKeyEntry entry = new PrivateKeyEntry();
+
+ // read the alias
+ alias = dis.readUTF();
+
+ // read the (entry creation) date
+ entry.date = new Date(dis.readLong());
+
+ // read the private key
+ try {
+ entry.protectedKey = new byte[dis.readInt()];
+ } catch (OutOfMemoryError e) {
+ throw new IOException("Keysize too big");
+ }
+ dis.readFully(entry.protectedKey);
+
+ // read the certificate chain
+ int numOfCerts = dis.readInt();
+ try {
+ if (numOfCerts > 0) {
+ entry.chain = new Certificate[numOfCerts];
+ }
+ } catch (OutOfMemoryError e) {
+ throw new IOException("Too many certificates in "
+ + "chain");
+ }
+ 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 = (CertificateFactory)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
+ try {
+ encoded = new byte[dis.readInt()];
+ } catch (OutOfMemoryError e) {
+ throw new IOException("Certificate too big");
+ }
+ dis.readFully(encoded);
+ bais = new ByteArrayInputStream(encoded);
+ entry.chain[j] = cf.generateCertificate(bais);
+ }
+
+ // Add the entry to the list
+ entries.put(alias, entry);
+
+ } else if (tag == 2) { // trusted certificate entry
+
+ 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 = (CertificateFactory)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);
+ }
+ }
+ try {
+ encoded = new byte[dis.readInt()];
+ } catch (OutOfMemoryError e) {
+ throw new IOException("Certificate too big");
+ }
+ dis.readFully(encoded);
+ bais = new ByteArrayInputStream(encoded);
+ entry.cert = cf.generateCertificate(bais);
+
+ // Add the entry to the list
+ entries.put(alias, entry);
+
+ } else if (tag == 3) { // secret-key entry
+
+ SecretKeyEntry entry = new SecretKeyEntry();
+
+ // read the alias
+ alias = dis.readUTF();
+
+ // read the (entry creation) date
+ entry.date = new Date(dis.readLong());
+
+ // read the sealed key
+ try {
+ ois = new ObjectInputStream(dis);
+ entry.sealedKey = (SealedObject)ois.readObject();
+ // NOTE: don't close ois here since we are still
+ // using dis!!!
+ } catch (ClassNotFoundException cnfe) {
+ throw new IOException(cnfe.getMessage());
+ }
+
+ // Add the entry to the list
+ entries.put(alias, entry);
+
+ } else {
+ throw new IOException("Unrecognized keystore entry");
+ }
+ }
+
+ /*
+ * 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[], actual[];
+ computed = md.digest();
+ actual = new byte[computed.length];
+ dis.readFully(actual);
+ for (int i = 0; i < computed.length; i++) {
+ if (computed[i] != actual[i]) {
+ throw new IOException("Keystore was tampered with, or "
+ + "password was incorrect");
+ }
+ }
+ }
+ } finally {
+ if (ois != null) {
+ ois.close();
+ } else {
+ dis.close();
+ }
+ }
+ }
+ }
+
+ /**
+ * To guard against tampering with the keystore, we append a keyed
+ * hash with a bit of whitener.
+ */
+ private MessageDigest getPreKeyedHash(char[] password)
+ throws NoSuchAlgorithmException, UnsupportedEncodingException {
+ int i, j;
+
+ MessageDigest md = MessageDigest.getInstance("SHA");
+ 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];
+ }
+ md.update(passwdBytes);
+ for (i=0; i<passwdBytes.length; i++)
+ passwdBytes[i] = 0;
+ md.update("Mighty Aphrodite".getBytes("UTF8"));
+ return md;
+ }
+}