IT. Expert System.

All Implemented Interfaces:

KeySpec

public class PBEKeySpec
extends Object
implements KeySpec

• Constructor Summary

  Constructors

  Constructor and Description
  PBEKeySpec(char[] password) Creates a new PBEKeySpec with the specified password.
  PBEKeySpec(char[] password, byte[] salt, int iterationCount) Creates a new PBEKeySpec with the specified password, salt and iteration count.
  PBEKeySpec(char[] password, byte[] salt, int iterationCount, int keyLength) Creates a new PBEKeySpec with the specified password, salt, iteration count and the desired length of the derived key.

• Method Summary

  Methods

  Modifier and Type	Method and Description
  void	clearPassword() Clears the password by overwriting it.
  int	getIterationCount() Returns the iteration count of this key specification.
  int	getKeyLength() Returns the desired key length of the derived key.
  char[]	getPassword() Returns a copy of the password of this key specification.
  byte[]	getSalt() Returns a copy of the salt of this key specification.

  • Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

• Constructor Detail

  • PBEKeySpec

    public PBEKeySpec(char[] password)

    Creates a new PBEKeySpec with the specified password.

    Parameters:

    password - the password.

  • PBEKeySpec

    public PBEKeySpec(char[] password,
              byte[] salt,
              int iterationCount,
              int keyLength)

    Creates a new PBEKeySpec with the specified password, salt, iteration count and the desired length of the derived key.

    Parameters:

    password - the password.

    salt - the salt.

    iterationCount - the iteration count.

    keyLength - the desired key length of the derived key,

    Throws:

    NullPointerException - if the salt is null.

    IllegalArgumentException - if the salt is empty, iteration count is zero or negative or the key length is zero or negative.

  • PBEKeySpec

    public PBEKeySpec(char[] password,
              byte[] salt,
              int iterationCount)

    Creates a new PBEKeySpec with the specified password, salt and iteration count.

    Parameters:

    password - the password.

    salt - the salt.

    iterationCount - the iteration count.

    Throws:

    NullPointerException - if salt is null.

    IllegalArgumentException - if the salt is empty or iteration count is zero or negative.

• Method Detail

  • clearPassword

    public final void clearPassword()

    Clears the password by overwriting it.

  • getPassword

    public final char[] getPassword()

    Returns a copy of the password of this key specification.

    Returns:

    a copy of the password of this key specification.

    Throws:

    IllegalStateException - if the password has been cleared before.

  • getSalt

    public final byte[] getSalt()

    Returns a copy of the salt of this key specification.

    Returns:

    a copy of the salt of this key specification or null if none is specified.

  • getIterationCount

    public final int getIterationCount()

    Returns the iteration count of this key specification.

    Returns:

    the iteration count of this key specification.

  • getKeyLength

    public final int getKeyLength()

    Returns the desired key length of the derived key.

    Returns:

    the desired key length of the derived key.