Package org.bouncycastle.jcajce.spec

Class PBKDF2KeySpec

java.lang.Object

javax.crypto.spec.PBEKeySpec

org.bouncycastle.jcajce.spec.PBKDF2KeySpec

All Implemented Interfaces:

KeySpec

public class PBKDF2KeySpec
extends PBEKeySpec

PBEKeySpec allowing for the use of alternate PRFs with PBKDF2.

Constructor Summary

Constructors

Constructor	Description
PBKDF2KeySpec(char[] password, byte[] salt, int iterationCount, int keySize)	Base constructor with the default PRF.
PBKDF2KeySpec(char[] password, byte[] salt, int iterationCount, int keySize, AlgorithmIdentifier prf)	Constructor that allows specifying a PRF.
PBKDF2KeySpec(char[] password, byte[] salt, int iterationCount, int keySize, DigestAlgorithm prfAlgorithm)	Constructor that allows specifying a PRF using an Algorithm.

Method Summary

Modifier and Type	Method	Description
AlgorithmIdentifier	getPrf()	Return an AlgorithmIdentifier representing the PRF.
boolean	isDefaultPrf()	Return true if this spec is for the default PRF (HmacSHA1), false otherwise.

Methods inherited from class javax.crypto.spec.PBEKeySpec

clearPassword, getIterationCount, getKeyLength, getPassword, getSalt

Methods inherited from class java.lang.Object

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

Constructor Details

PBKDF2KeySpec

public PBKDF2KeySpec(char[] password,
 byte[] salt,
 int iterationCount,
 int keySize)

Base constructor with the default PRF.

Parameters:

password - password.

salt - salt to use.

iterationCount - iteration count for PBE algorithm.

keySize - keySize in bits.

PBKDF2KeySpec

public PBKDF2KeySpec(char[] password,
 byte[] salt,
 int iterationCount,
 int keySize,
 DigestAlgorithm prfAlgorithm)

Constructor that allows specifying a PRF using an Algorithm.

Parameters:

password - password.

salt - salt to use.

iterationCount - iteration count for PBE algorithm.

keySize - keySize in bits.

prfAlgorithm - Algorithm identifying the PRF to use.

PBKDF2KeySpec

public PBKDF2KeySpec(char[] password,
 byte[] salt,
 int iterationCount,
 int keySize,
 AlgorithmIdentifier prf)

Constructor that allows specifying a PRF.

Parameters:

password - password.

salt - salt to use.

iterationCount - iteration count for PBE algorithm.

keySize - keySize in bits.

prf - AlgorithmIdentifier for the PRF to use.

Method Details

isDefaultPrf

public boolean isDefaultPrf()

Return true if this spec is for the default PRF (HmacSHA1), false otherwise.

Returns:

true if this spec uses the default PRF, false otherwise.

getPrf

public AlgorithmIdentifier getPrf()

Return an AlgorithmIdentifier representing the PRF.

Returns:

the PRF's AlgorithmIdentifier.