edu.vt.middleware.crypt.pbe
Class PBKDF2KeyGenerator

java.lang.Object
  edu.vt.middleware.crypt.pbe.AbstractPKCSKeyGenerator
      edu.vt.middleware.crypt.pbe.PBKDF2KeyGenerator

All Implemented Interfaces:

KeyGenerator

public class PBKDF2KeyGenerator
extends AbstractPKCSKeyGenerator

Implements the PBKDF2 key generation function defined in PKCS#5v2.

Version:

$Revision: 1818 $

Author:

Middleware Services

Field Summary

Fields inherited from class edu.vt.middleware.crypt.pbe.AbstractPKCSKeyGenerator

DEFAULT_ITERATION_COUNT, iterationCount, salt

Constructor Summary

PBKDF2KeyGenerator(byte[] saltBytes)
Creates a new instance that uses SHA1 hash for pseudorandom function to generate derived keys.

PBKDF2KeyGenerator(byte[] saltBytes, int iterations)
Creates a new instance that uses SHA1 hash for pseudorandom function to generate derived keys.

Method Summary

protected org.bouncycastle.crypto.PBEParametersGenerator	newParamGenerator() Creates a new BC parameter generator instance.
protected byte[]	toBytes(char[] password) Converts password characters to bytes in implementation-dependent fashion.

Methods inherited from class edu.vt.middleware.crypt.pbe.AbstractPKCSKeyGenerator

generate, setIterationCount

Methods inherited from class java.lang.Object

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

Constructor Detail

PBKDF2KeyGenerator

public PBKDF2KeyGenerator(byte[] saltBytes)

Creates a new instance that uses SHA1 hash for pseudorandom function to generate derived keys.

Parameters:

saltBytes - Key derivation function salt bytes.

PBKDF2KeyGenerator

public PBKDF2KeyGenerator(byte[] saltBytes,
                          int iterations)

Creates a new instance that uses SHA1 hash for pseudorandom function to generate derived keys.

Parameters:

saltBytes - Key derivation function salt bytes.

iterations - Key derivation function iteration count.

Method Detail

newParamGenerator

protected org.bouncycastle.crypto.PBEParametersGenerator newParamGenerator()

Creates a new BC parameter generator instance.

Specified by:

newParamGenerator in class AbstractPKCSKeyGenerator

Returns:

New parameter generator.

toBytes

protected byte[] toBytes(char[] password)

Converts password characters to bytes in implementation-dependent fashion.

Specified by:

toBytes in class AbstractPKCSKeyGenerator

Parameters:

password - Password to convert.

Returns:

Password bytes.