org.norther.tammi.core.security
Class DefaultMessageDigestFactory

java.lang.Object
  org.norther.tammi.core.base.Adaptee
      org.norther.tammi.core.base.DefaultObjectFactory<MessageDigest>
          org.norther.tammi.core.security.DefaultMessageDigestFactory

All Implemented Interfaces:

Serializable, NotificationBroadcaster, NotificationEmitter, Manageable, MBeanDelegate, ObjectFactory<MessageDigest>, MessageDigestFactory

public class DefaultMessageDigestFactory
extends DefaultObjectFactory<MessageDigest>
implements MessageDigestFactory

A default implementation of MessageDigestFactory.

Version:

$Id: DefaultMessageDigestFactory.java,v 1.7 2009/09/28 15:08:43 cvsimp Exp $

Author:

Ilkka Priha

See Also:

Serialized Form

Field Summary

Fields inherited from class org.norther.tammi.core.base.Adaptee

ADAPTEE_NOTIF_DESCRIPTION, ADAPTEE_NOTIFICATIONS

Constructor Summary

DefaultMessageDigestFactory()
Constructs a new factory.

Method Summary

String	decodeBase64(String string) Decodes a BASE64 string applying the UTF-8 encoding.
String	decodeBase64(String string, String encoding) Decodes a BASE64 string applying the specified encoding.
String	digest(String algorithm, String string) Computes a hash for the given string by applying platform's default encoding.
String	digest(String algorithm, String string, String encoding) Computes a hash for the given string applying the specified encoding.
String	digest(String algorithm, String salt, String string, String encoding) Computes a hash for the given string using the given salt and applying the specified encoding.
String	encodeBase64(String string) Encodes a BASE64 string applying the UTF-8 encoding.
String	encodeBase64(String string, String encoding) Encodes a BASE64 string applying the specified encoding.
String	generate(String algorithm) Generates a secret key and returns its string representation.
MessageDigest	getInstance(String className, ObjectName loader, Object[] params, String[] signature) Gets an instance of a named class using a specified class loader.
boolean	isLoaderSupported(String className) Checks if specified class loaders are supported for a named class.

Methods inherited from class org.norther.tammi.core.base.DefaultObjectFactory

getInstance, getInstance, getInstance

Methods inherited from class org.norther.tammi.core.base.Adaptee

addAdaptee, addNotificationListener, getAttributeSupport, getBroker, getCanonicalName, getDomain, getFactory, getLoader, getLog, getLog, getMBean, getMBeanServer, getNotificationInfo, getObjectName, getRegistrationTime, getSequenceNumber, hasListeners, isRegistered, postmanaged, premanaged, removeNotificationListener, removeNotificationListener, sendNotification, sendNotification, sendNotification, sendNotification, unmanaged, unregister

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.norther.tammi.core.base.ObjectFactory

getInstance, getInstance, getInstance

Constructor Detail

DefaultMessageDigestFactory

public DefaultMessageDigestFactory()

Constructs a new factory.

Method Detail

digest

public String digest(String algorithm,
                     String string)
              throws NoSuchAlgorithmException

Description copied from interface: MessageDigestFactory

Computes a hash for the given string by applying platform's default encoding.

Specified by:

digest in interface MessageDigestFactory

Parameters:

algorithm - the digest algorithm.

string - the string to use.

Returns:

the BASE64 or MD5 encoded hash.

Throws:

NoSuchAlgorithmException - if the algorithm is unknown.

digest

public String digest(String algorithm,
                     String string,
                     String encoding)
              throws NoSuchAlgorithmException

Description copied from interface: MessageDigestFactory

Computes a hash for the given string applying the specified encoding.

Specified by:

digest in interface MessageDigestFactory

Parameters:

algorithm - the digest algorithm.

string - the string to use.

encoding - the character encoding.

Returns:

the BASE64 or MD5 encoded hash.

Throws:

NoSuchAlgorithmException - if the algorithm is unknown.

digest

public String digest(String algorithm,
                     String salt,
                     String string,
                     String encoding)
              throws NoSuchAlgorithmException

Description copied from interface: MessageDigestFactory

Computes a hash for the given string using the given salt and applying the specified encoding.

Specified by:

digest in interface MessageDigestFactory

Parameters:

algorithm - the digest algorithm.

salt - the salt to use.

string - the string to use.

encoding - the character encoding.

Returns:

the BASE64 or MD5 encoded hash.

Throws:

NoSuchAlgorithmException - if the algorithm is unknown.

generate

public String generate(String algorithm)
                throws NoSuchAlgorithmException

Description copied from interface: MessageDigestFactory

Generates a secret key and returns its string representation.

Specified by:

generate in interface MessageDigestFactory

Parameters:

algorithm - the secret algorithm.

Returns:

the BASE64 encoded key.

Throws:

NoSuchAlgorithmException - if the algorithm is unknown.

encodeBase64

public String encodeBase64(String string)

Description copied from interface: MessageDigestFactory

Encodes a BASE64 string applying the UTF-8 encoding.

Specified by:

encodeBase64 in interface MessageDigestFactory

Parameters:

string - the string to encode.

Returns:

the encoded string.

encodeBase64

public String encodeBase64(String string,
                           String encoding)

Description copied from interface: MessageDigestFactory

Encodes a BASE64 string applying the specified encoding.

Specified by:

encodeBase64 in interface MessageDigestFactory

Parameters:

string - the string to encode.

encoding - the character encoding.

Returns:

the encoded string.

decodeBase64

public String decodeBase64(String string)

Description copied from interface: MessageDigestFactory

Decodes a BASE64 string applying the UTF-8 encoding.

Specified by:

decodeBase64 in interface MessageDigestFactory

Parameters:

string - the string to decode.

Returns:

the decoded string.

decodeBase64

public String decodeBase64(String string,
                           String encoding)

Description copied from interface: MessageDigestFactory

Decodes a BASE64 string applying the specified encoding.

Specified by:

decodeBase64 in interface MessageDigestFactory

Parameters:

string - the string to decode.

encoding - the character encoding.

Returns:

the decoded string.

getInstance

public MessageDigest getInstance(String className,
                                 ObjectName loader,
                                 Object[] params,
                                 String[] signature)
                          throws ConstructionException

Description copied from interface: ObjectFactory

Gets an instance of a named class using a specified class loader. Parameters for its constructor are given as an array of objects, primitive types must be wrapped with a corresponding class.

Class loaders are supported only if the isLoaderSupported method returns true. Otherwise the loader parameter is ignored.

Specified by:

getInstance in interface ObjectFactory<MessageDigest>

Overrides:

getInstance in class DefaultObjectFactory<MessageDigest>

Parameters:

className - the name of the class.

loader - the class loader.

params - an array containing the parameters of the constructor.

signature - an array containing the signature of the constructor.

Returns:

the instance.

Throws:

ConstructionException - if construction fails.

isLoaderSupported

public boolean isLoaderSupported(String className)

Description copied from interface: ObjectFactory

Checks if specified class loaders are supported for a named class.

Specified by:

isLoaderSupported in interface ObjectFactory<MessageDigest>

Overrides:

isLoaderSupported in class DefaultObjectFactory<MessageDigest>

Parameters:

className - the name of the class.

Returns:

true if class loaders are supported, false otherwise.