org.randomcoder.crypto
Class TransientAESEncryptionContext

java.lang.Object
  org.randomcoder.crypto.TransientAESEncryptionContext

All Implemented Interfaces:

EncryptionContext, InitializingBean

public final class TransientAESEncryptionContext
extends Object
implements EncryptionContext, InitializingBean

EncryptionContext which implements padded AES encryption using a temporary key.

 Copyright (c) 2007, Craig Condit. All rights reserved.
 
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 modification, are permitted provided that the following conditions are met:
 
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     this list of conditions and the following disclaimer in the documentation
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 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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Constructor Summary

TransientAESEncryptionContext()

Method Summary

void	afterPropertiesSet() Initializes the internal state of the object after all properties have been set.
byte[]	decrypt(byte[] data) Decrypts the given data.
byte[]	encrypt(byte[] data) Encrypts the given data.
void	setKeySize(int keySize) Sets the key size in bits (defaults to 128).

Methods inherited from class java.lang.Object

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

Constructor Detail

TransientAESEncryptionContext

public TransientAESEncryptionContext()

Method Detail

setKeySize

public void setKeySize(int keySize)

Sets the key size in bits (defaults to 128).

Parameters:

keySize - key size

afterPropertiesSet

public void afterPropertiesSet()
                        throws Exception

Initializes the internal state of the object after all properties have been set.

Specified by:

afterPropertiesSet in interface InitializingBean

Throws:

Exception - if an error occurs

encrypt

public byte[] encrypt(byte[] data)
               throws EncryptionException

Description copied from interface: EncryptionContext

Encrypts the given data.

Specified by:

encrypt in interface EncryptionContext

Parameters:

data - data to encrypt

Returns:

encrypted data

Throws:

EncryptionException - if encryption fails

decrypt

public byte[] decrypt(byte[] data)
               throws EncryptionException

Description copied from interface: EncryptionContext

Decrypts the given data.

Specified by:

decrypt in interface EncryptionContext

Parameters:

data - data to decrypt

Returns:

decrypted data

Throws:

EncryptionException - if decryption fails