iaik.security.spec

Class PBEKeyAndParameterSpec

java.lang.Object

iaik.security.spec.PBEKeyAndParameterSpec

All Implemented Interfaces:

java.security.spec.AlgorithmParameterSpec

Direct Known Subclasses:

PBKDF2KeyAndParameterSpec

public class PBEKeyAndParameterSpec
extends java.lang.Object
implements java.security.spec.AlgorithmParameterSpec

This class is simply a combination of PBEParameterSpec and PBEKeySpec since both specs are needed when generating a SecretKey for a MAC. Typically a MAC SecretKey depends on a user specified password, a salt value and an iteration count.

Version:

File Revision 11

Constructor Summary

Constructors

Constructor and Description
PBEKeyAndParameterSpec(byte[] password, byte[] salt, int iterationCount, int derivedKeyLength) Constructs a parameter set for password-based encryption for generating MAC secret keys.

Method Summary

Methods

Modifier and Type	Method and Description
protected void	finalize() Clears the internal password field.
int	getDerivedKeyLength() Returns the length (number of bytes) the derived key should have.
int	getIterationCount() Returns the iteration count.
byte[]	getPassword() Returns the password.
byte[]	getSalt() Returns the salt.

Methods inherited from class java.lang.Object

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

Constructor Detail

PBEKeyAndParameterSpec

public PBEKeyAndParameterSpec(byte[] password,
                      byte[] salt,
                      int iterationCount,
                      int derivedKeyLength)

Constructs a parameter set for password-based encryption for generating MAC secret keys. Note that the given password and the salt are cloned before they are stored in the new MACParameterSpec object.

Parameters:

password - the password

salt - the salt

iterationCount - the iteration count

derivedKeyLength - the length (number of bytes) the derived key should have

Method Detail

getIterationCount

public final int getIterationCount()

Returns the iteration count.

getDerivedKeyLength

public final int getDerivedKeyLength()

Returns the length (number of bytes) the derived key should have.

getSalt

public final byte[] getSalt()

Returns the salt.

getPassword

public final byte[] getPassword()

Returns the password. Note that this method returns a reference to the password. It is the caller's responsibility to zero out the password information after it is no longer needed.

finalize

protected void finalize()
                 throws java.lang.Throwable

Clears the internal password field.

Overrides:

finalize in class java.lang.Object

Throws:

java.lang.Throwable