pwdbheader.java

KeePass for J2ME is a J2ME port of KeePass Password Safe, a free, open source, light-weight and easy

/*
KeePass for J2ME

Copyright 2007 Naomaru Itoi <[e-mail]>

This file was derived from 

Java clone of KeePass - A KeePass file viewer for Java
Copyright 2006 Bill Zwicky <[e-mail]>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2

This program 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 for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

package org.phoneid.keepassj2me;

public class PwDbHeader {
  /**
   * Parse given buf, as read from file.
   * @param buf
   */
  public PwDbHeader( byte buf[], int offset ) {
    signature1 = Types.readInt( buf, offset + 0 );
    signature2 = Types.readInt( buf, offset + 4 );
    flags = Types.readInt( buf, offset + 8 );
    version = Types.readInt( buf, offset + 12 );

    System.arraycopy( buf, offset + 16, masterSeed, 0, 16 );
    System.arraycopy( buf, offset + 32, encryptionIV, 0, 16 );

    numGroups = Types.readInt( buf, offset + 48 );
    numEntries = Types.readInt( buf, offset + 52 );

    System.arraycopy( buf, offset + 56, contentsHash, 0, 32 );

    System.arraycopy( buf, offset + 88, masterSeed2, 0, 32 );
    numKeyEncRounds = Types.readInt( buf, offset + 120 );
  }



  public void toBuf( byte[] buf, int offset ) {
    throw new RuntimeException("Method 'toBuf' not implemented yet");
  }



  /** Size of byte buffer needed to hold this struct. */
  public static final int BUF_SIZE        = 124;



  public int              signature1;                  // = PWM_DBSIG_1
  public int              signature2;                  // = PWM_DBSIG_2
  public int              flags;
  public int              version;

  /** Seed that gets hashed with the userkey to form the final key */
  public byte             masterSeed[]   = new byte[16];
  /** IV used for content encryption */
  public byte             encryptionIV[] = new byte[16];

  /** Number of groups in the database */
  public int              numGroups;
  /** Number of entries in the database */
  public int              numEntries;

  /** SHA-256 hash of the database, used for integrity check */
  public byte             contentsHash[] = new byte[32];

  /** Used for the dwKeyEncRounds AES transformations */
  public byte             masterSeed2[]  = new byte[32];
  public int              numKeyEncRounds;
}