org.jboss.seam.security.crypto

Class PBKDF2Parameters

java.lang.Object

org.jboss.seam.security.crypto.PBKDF2Parameters

public class PBKDF2Parameters
extends Object

Copied from Matthias Gartner's PKCS#5 implementation - see http://rtner.de/software/PBKDF2.html

Parameter data holder for PBKDF2 configuration.

A free Java implementation of Password Based Key Derivation Function 2 as defined by RFC 2898. Copyright (c) 2007 Matthias Gärtner

This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.

This library 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 Lesser General Public License for more details.

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

For Details, see http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

Version:

1.0

Author:

Matthias Gärtner

Field Summary

Fields

Modifier and Type	Field and Description
protected byte[]	derivedKey The derived key is actually only a convenience to store a reference derived key.
protected String	hashAlgorithm
protected String	hashCharset
protected int	iterationCount
protected byte[]	salt

Constructor Summary

Constructors

Constructor and Description
PBKDF2Parameters() Constructor.
PBKDF2Parameters(String hashAlgorithm, String hashCharset, byte[] salt, int iterationCount) Constructor.
PBKDF2Parameters(String hashAlgorithm, String hashCharset, byte[] salt, int iterationCount, byte[] derivedKey) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
byte[]	getDerivedKey()
String	getHashAlgorithm()
String	getHashCharset()
int	getIterationCount()
byte[]	getSalt()
void	setDerivedKey(byte[] derivedKey)
void	setHashAlgorithm(String hashAlgorithm)
void	setHashCharset(String hashCharset)
void	setIterationCount(int iterationCount)
void	setSalt(byte[] salt)

Methods inherited from class java.lang.Object

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

Field Detail

salt

protected byte[] salt

iterationCount

protected int iterationCount

hashAlgorithm

protected String hashAlgorithm

hashCharset

protected String hashCharset

derivedKey

protected byte[] derivedKey

The derived key is actually only a convenience to store a reference derived key. It is not used during computation.

Constructor Detail

PBKDF2Parameters

public PBKDF2Parameters()

Constructor. Defaults to null for byte arrays, UTF-8 as character set and 1000 for iteration count.

PBKDF2Parameters

public PBKDF2Parameters(String hashAlgorithm,
                String hashCharset,
                byte[] salt,
                int iterationCount)

Constructor.

Parameters:

hashAlgorithm - for example HMacSHA1 or HMacMD5

hashCharset - for example UTF-8

salt - Salt as byte array, may be null (not recommended)

iterationCount - Number of iterations to execute. Recommended value 1000.

PBKDF2Parameters

public PBKDF2Parameters(String hashAlgorithm,
                String hashCharset,
                byte[] salt,
                int iterationCount,
                byte[] derivedKey)

Constructor.

Parameters:

hashAlgorithm - for example HMacSHA1 or HMacMD5

hashCharset - for example UTF-8

salt - Salt as byte array, may be null (not recommended)

iterationCount - Number of iterations to execute. Recommended value 1000.

derivedKey - Convenience data holder, not used during computation.

Method Detail

getIterationCount

public int getIterationCount()

setIterationCount

public void setIterationCount(int iterationCount)

getSalt

public byte[] getSalt()

setSalt

public void setSalt(byte[] salt)

getDerivedKey

public byte[] getDerivedKey()

setDerivedKey

public void setDerivedKey(byte[] derivedKey)

getHashAlgorithm

public String getHashAlgorithm()

setHashAlgorithm

public void setHashAlgorithm(String hashAlgorithm)

getHashCharset

public String getHashCharset()

setHashCharset

public void setHashCharset(String hashCharset)