com.helger.photon.basic.security.password.hash

Class AbstractPasswordHashCreatorPBKDF2

java.lang.Object

com.helger.photon.basic.security.password.hash.AbstractPasswordHashCreator

com.helger.photon.basic.security.password.hash.AbstractPasswordHashCreatorPBKDF2

All Implemented Interfaces:

IPasswordHashCreator

Direct Known Subclasses:

PasswordHashCreatorPBKDF2_1000_48

public abstract class AbstractPasswordHashCreatorPBKDF2
extends AbstractPasswordHashCreator

Base class for IPasswordHashCreator using the PBKDF2 algorithm.

Since:

3.8.2

Author:

Philip Helger

Field Summary

Fields

Modifier and Type	Field and Description
static String	PBKDF2_ALGORITHM

Constructor Summary

Constructors

Constructor and Description
AbstractPasswordHashCreatorPBKDF2(String sAlgorithm)

Method Summary

Methods

Modifier and Type	Method and Description
protected static byte[]	pbkdf2(char[] aPassword, byte[] aSalt, int nIterations, int nBytes) Computes the PBKDF2 hash of a password.
boolean	requiresSalt()

Methods inherited from class com.helger.photon.basic.security.password.hash.AbstractPasswordHashCreator

getAlgorithmName, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.helger.photon.basic.security.password.hash.IPasswordHashCreator

createPasswordHash

Field Detail

PBKDF2_ALGORITHM

public static final String PBKDF2_ALGORITHM

See Also:

Constant Field Values

Constructor Detail

AbstractPasswordHashCreatorPBKDF2

public AbstractPasswordHashCreatorPBKDF2(@Nonnull@Nonempty
                                 String sAlgorithm)

Method Detail

requiresSalt

public final boolean requiresSalt()

Returns:

true if this hash creator requires a salt, false if not.

pbkdf2

@Nonnull
protected static final byte[] pbkdf2(@Nonnull
                    char[] aPassword,
                    @Nonnull
                    byte[] aSalt,
                    @Nonnegative
                    int nIterations,
                    @Nonnegative
                    int nBytes)

Computes the PBKDF2 hash of a password.

Parameters:

aPassword - the password to hash.

aSalt - the salt

nIterations - the iteration count (slowness factor)

nBytes - the length of the hash to compute in bytes

Returns:

the PBDKF2 hash of the password