gt:                     byte computed[], actual[];
context: /*
   * Copyright (c) 1998, 2019, Oracle and/or its affiliates. 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.  Oracle designates this
   * particular file as subject to the "Classpath" exception as provided
   * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
   * or visit www.oracle.com if you need additional information or have any
   * questions.
   */
  
  package com.sun.crypto.provider;
  
  import sun.security.util.Debug;
  
  import java.io.*;
  import java.util.*;
  import java.security.AccessController;
  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.PrivilegedAction;
  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.CertificateException;
  import javax.crypto.SealedObject;
  
  import static java.nio.charset.StandardCharsets.UTF_8;
  
  /**
   * 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 Debug debug = Debug.getInstance("keystore");
      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<String, Object> entries = new Hashtable<String, Object>();
  
      /**
       * 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(Locale.ENGLISH));
  
          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(Locale.ENGLISH));
  
          if ((entry instanceof PrivateKeyEntry)
              && (((PrivateKeyEntry)entry).chain != null)) {
              chain = ((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(Locale.ENGLISH));
  
          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(Locale.ENGLISH));
  
          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 = chain.clone();
                      } else {
                          entry.chain = null;
                      }
  
                      // store the entry
                      entries.put(alias.toLowerCase(Locale.ENGLISH), entry);
  
                  } else {
                      SecretKeyEntry entry = new SecretKeyEntry();
                      entry.date = new Date();
  
                      // seal and store the key
                      entry.sealedKey = keyProtector.seal(key);
                      entries.put(alias.toLowerCase(Locale.ENGLISH), 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 = key.clone();
              if ((chain != null) &&
                  (chain.length != 0)) {
                  entry.chain = chain.clone();
              } else {
                  entry.chain = null;
              }
  
              entries.put(alias.toLowerCase(Locale.ENGLISH), 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(Locale.ENGLISH));
              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(Locale.ENGLISH), 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(Locale.ENGLISH));
          }
      }
  
      /**
       * Lists all the alias names of this keystore.
       *
       * @return enumeration of the alias names
       */
      public Enumeration<String> 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(Locale.ENGLISH));
      }
  
      /**
       * 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(Locale.ENGLISH));
          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(Locale.ENGLISH));
          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<String> e = entries.keys();
          while (e.hasMoreElements()) {
              String alias = 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<String> e = entries.keys();
                  while (e.hasMoreElements()) {
  
                      String alias = 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<String, CertificateFactory> cfs = null;
              ByteArrayInputStream bais = null;
              byte[] encoded = null;
              int trustedKeyCount = 0, privateKeyCount = 0, secretKeyCount = 0;
  
              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
                          privateKeyCount++;
                          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 = 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
                          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);
                              }
                          }
                          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
                          secretKeyCount++;
                          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);
                              final ObjectInputStream ois2 = ois;
                              // Set a deserialization checker
                              AccessController.doPrivileged(
                                  (PrivilegedAction<Void>)() -> {
                                      ois2.setObjectInputFilter(
                                          new DeserializationChecker());
                                      return null;
                              });
                              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());
                          } catch (InvalidClassException ice) {
                              throw new IOException("Invalid secret key format");
                          }
  
                          // Add the entry to the list
                          entries.put(alias, entry);
  
                      } else {
                          throw new IOException("Unrecognized keystore entry: " +
                                  tag);
                      }
                  }
  
                  if (debug != null) {
                      debug.println("JceKeyStore load: private key count: " +
                          privateKeyCount + ". trusted key count: " +
                          trustedKeyCount + ". secret key count: " +
                          secretKeyCount);
                  }
  
                  /*
                   * 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) {
  