org.apache.fulcrum.jce.crypto

Class PasswordFactory

java.lang.Object

org.apache.fulcrum.jce.crypto.PasswordFactory

All Implemented Interfaces:

PasswordParameters

public class PasswordFactory
extends Object
implements PasswordParameters

The implementation supplies a default password in the case that the programmer don't want to have additional hassles. It is easy to reengineer the password being used but much better than a hard-coded password in the application. The code uses parts from Markus Hahn's Blowfish library found at http://blowfishj.sourceforge.net/

Author:

Siegfried Goeschl , Markus Hahn

Field Summary

Fields inherited from interface org.apache.fulcrum.jce.crypto.PasswordParameters

COUNT

Constructor Summary

Constructors

Constructor and Description
PasswordFactory(String algo)
PasswordFactory(String algo, int count)

Method Summary

Modifier and Type	Method and Description
char[]	create() Create a new password
char[]	create(char[] seed)
char[]	create(char[] password, byte[] salt, int count) Creates a default password using "xxxx-xxxx-xxxx-xxxxx".
char[]	create(String seed) Create a new password using a seed
static PasswordFactory	getInstance() Factory method to get a default instance
static PasswordFactory	getInstance(String algo) Factory method to get a default instance
static PasswordFactory	getInstance(String algo, int count) Factory method to get a default instance

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.fulcrum.jce.crypto.PasswordParameters

DefaultPassword, Salt

Constructor Detail

PasswordFactory

public PasswordFactory(String algo)

PasswordFactory

public PasswordFactory(String algo,
                       int count)

Method Detail

getInstance

public static PasswordFactory getInstance()

Factory method to get a default instance

Returns:

an instance of the CryptoStreamFactory

getInstance

public static PasswordFactory getInstance(String algo)

Factory method to get a default instance

Parameters:

algo - algorithm

Returns:

an instance of the CryptoStreamFactory

getInstance

public static PasswordFactory getInstance(String algo,
                                          int count)

Factory method to get a default instance

Parameters:

algo - algorithm

count - the number of MessageDigest iterations

Returns:

an instance of the CryptoStreamFactory

create

public char[] create()
              throws NoSuchAlgorithmException,
                     UnsupportedEncodingException

Create a new password

Returns:

a default password using "xxxx-xxxx-xxxx-xxxxx"

Throws:

NoSuchAlgorithmException - the encryption algorithm is not supported

UnsupportedEncodingException - the requested encoding is not supported

create

public char[] create(String seed)
              throws NoSuchAlgorithmException,
                     UnsupportedEncodingException

Create a new password using a seed

Parameters:

seed - the default password supplied by the caller

Returns:

a password using "xxxx-xxxx-xxxx-xxxxx"

Throws:

NoSuchAlgorithmException - the encryption algorithm is not supported

UnsupportedEncodingException - the requested encoding is not supported

create

public final char[] create(char[] seed)
                    throws NoSuchAlgorithmException,
                           UnsupportedEncodingException

Parameters:

seed - the default password supplied by the caller

Returns:

a password using "xxxx-xxxx-xxxx-xxxxx"

Throws:

NoSuchAlgorithmException - the encryption algorithm is not supported

UnsupportedEncodingException - the requested encoding is not supported

create

public char[] create(char[] password,
                     byte[] salt,
                     int count)
              throws NoSuchAlgorithmException,
                     UnsupportedEncodingException

Creates a default password using "xxxx-xxxx-xxxx-xxxxx".

Parameters:

salt - the password salt

password - the default password

count - number of MessageDigest iterations

Returns:

the default password

Throws:

NoSuchAlgorithmException - the encryption algorithm is not supported

UnsupportedEncodingException - the requested encoding is not supported