ch.elca.el4j.util.encryption
Class SymmetricEncryption

java.lang.Object
  ch.elca.el4j.util.encryption.SymmetricEncryption

public class SymmetricEncryption
extends Object

Class to en- and decrypt data symetrically. CAVEAT: the encoding between byte[] and String was recently changed to adapt to the new Base64 encore (before it used a private method of sun).

Author:

Andreas Pfenninger (APR)

File-location:

SymmetricEncryption

Last check-in date:

2009-08-04 15:48:31 +0200 (Di, 04. Aug 2009) by swismer for revision 3884

Constructor Summary

SymmetricEncryption()

Method Summary

String	decrypt(String encryptedString) Decrypts a String.
byte[]	decryptStringToByteArray(String encryptedString) Decrypts a String into a byte array.
String	encrypt(String unencryptedString) Encrypts a String.
String	encryptByteArrayToString(byte[] cleartext) Encrypts a byte array into a String.
void	init() Initializes the encryptor.
void	setDataEncodingFormat(String dataEncodingFormat)
void	setEncryptionKey(String encryptionKey)
void	setEncryptionScheme(String encryptionScheme)

Methods inherited from class java.lang.Object

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

Constructor Detail

SymmetricEncryption

public SymmetricEncryption()

Method Detail

setDataEncodingFormat

public void setDataEncodingFormat(String dataEncodingFormat)

Parameters:

dataEncodingFormat - The dataEncodingFormat to set.

setEncryptionKey

public void setEncryptionKey(String encryptionKey)

Parameters:

encryptionKey - The encryptionKey to set.

setEncryptionScheme

public void setEncryptionScheme(String encryptionScheme)

Parameters:

encryptionScheme - The encryptionScheme to set.

init

public void init()
          throws EncryptionException

Initializes the encryptor.

Throws:

EncryptionException - if encryption could not be initialized.

encrypt

public String encrypt(String unencryptedString)
               throws EncryptionException

Encrypts a String.

Parameters:

unencryptedString - The String to encrypt.

Returns:

The decrypted String.

Throws:

EncryptionException - if there was an error.

decrypt

public String decrypt(String encryptedString)
               throws EncryptionException

Decrypts a String.

Parameters:

encryptedString - The String to decrypt.

Returns:

The decrypted String.

Throws:

EncryptionException - if there was an error.

encryptByteArrayToString

public String encryptByteArrayToString(byte[] cleartext)
                                throws EncryptionException

Encrypts a byte array into a String.

Parameters:

cleartext - The byte array to encrypt.

Returns:

The encrypted String.

Throws:

EncryptionException - if there was an error.

decryptStringToByteArray

public byte[] decryptStringToByteArray(String encryptedString)
                                throws EncryptionException

Decrypts a String into a byte array.

Parameters:

encryptedString - The String to decrypt.

Returns:

The decrypted byte array.

Throws:

EncryptionException - if there was an error.