org.licas.security

Class Encryption

java.lang.Object

org.licas.security.Encryption

public class Encryption
extends java.lang.Object

This can encrypt and decrypt a string message using the 'AES' algorithm. Note that encryption cannot be done in parts and concatenated together. https://stackoverflow.com/questions/7762771/how-do-i-encrypt-decrypt-a-string-with-another-string-as-a-password

Author:

Kieran Greer

Constructor Summary

Constructors

Constructor and Description
Encryption()

Method Summary

Modifier and Type	Method and Description
java.lang.String	decrypt(java.lang.String toDecrypt, java.security.Key key) Decrypt a string using a strong aes algorithm.
java.lang.String	encrypt(java.lang.String toEncrypt, java.security.Key key) Encrypt a string using a strong aes algorithm.
java.security.Key	generateKey() Generate a unique key to use as the basis for some encryption.

Methods inherited from class java.lang.Object

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

Constructor Detail

Encryption

public Encryption()

Method Detail

encrypt

public java.lang.String encrypt(java.lang.String toEncrypt,
                                java.security.Key key)
                         throws java.lang.Exception

Encrypt a string using a strong aes algorithm. The returned string is also base64 encoded, so use decrypt to reverse the encryption.

Parameters:

toEncrypt - the string to encrypt.

key - the encryption key.

Returns:

the encrypted byte string.

Throws:

java.lang.Exception - any error.

decrypt

public java.lang.String decrypt(java.lang.String toDecrypt,
                                java.security.Key key)
                         throws java.lang.Exception

Decrypt a string using a strong aes algorithm.

Parameters:

toDecrypt - the string to decrypt.

key - the encryption key.

Returns:

the encrypted string.

Throws:

java.lang.Exception - any error.

generateKey

public java.security.Key generateKey()
                              throws java.lang.Exception

Generate a unique key to use as the basis for some encryption.

Returns:

the encryption key.

Throws:

java.lang.Exception - any error.