Package org.jivesoftware.util

Class AesEncryptor

java.lang.Object

org.jivesoftware.util.AesEncryptor

All Implemented Interfaces:

Encryptor

public class AesEncryptor
extends Object
implements Encryptor

Utility class providing symmetric AES encryption/decryption. To strengthen the encrypted result, use the setKey(byte[]) method to provide a custom key prior to invoking the encrypt(java.lang.String) or decrypt(java.lang.String) methods.

Author:

Tom Evans

Constructor Summary

Constructors

Constructor	Description
AesEncryptor()	Default constructor
AesEncryptor(String key)	Custom key constructor

Method Summary

Modifier and Type	Method	Description
String	decrypt(String value)	Decrypt an encrypted String.
String	decrypt(String value, byte[] iv)	Decrypt an encrypted String.
String	encrypt(String value)	Encrypt a clear text String.
String	encrypt(String value, byte[] iv)	Encrypt a clear text String.
void	setKey(String key)	Set the encryption key.

Methods inherited from class java.lang.Object

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

Constructor Detail

AesEncryptor

public AesEncryptor()

Default constructor

AesEncryptor

public AesEncryptor(String key)

Custom key constructor

Parameters:

key - the custom key

Method Detail

encrypt

public String encrypt(String value)

Description copied from interface: Encryptor

Encrypt a clear text String.

Specified by:

encrypt in interface Encryptor

Parameters:

value - The clear text attribute

Returns:

The encrypted attribute, or null

encrypt

public String encrypt(String value,
                      byte[] iv)

Description copied from interface: Encryptor

Encrypt a clear text String.

Specified by:

encrypt in interface Encryptor

Parameters:

value - The clear text attribute

iv - The IV to use, or null for the default IV

Returns:

The encrypted attribute, or null

decrypt

public String decrypt(String value)

Description copied from interface: Encryptor

Decrypt an encrypted String.

Specified by:

decrypt in interface Encryptor

Parameters:

value - The encrypted attribute in Base64 encoding

Returns:

The clear text attribute, or null

decrypt

public String decrypt(String value,
                      byte[] iv)

Description copied from interface: Encryptor

Decrypt an encrypted String.

Specified by:

decrypt in interface Encryptor

Parameters:

value - The encrypted attribute in Base64 encoding

iv - The IV to use, or null for the default IV

Returns:

The clear text attribute, or null

setKey

public void setKey(String key)

Description copied from interface: Encryptor

Set the encryption key. This will apply the user-defined key, truncated or filled (via the default key) as needed to meet the key length specifications.

Specified by:

setKey in interface Encryptor

Parameters:

key - The encryption key