ro.raducora.utils.encryption.key
Class RC4EncryptionKey

java.lang.Object
  |
  +--ro.raducora.utils.encryption.key.StreamEncryptionKey
        |
        +--ro.raducora.utils.encryption.key.RC4EncryptionKey

All Implemented Interfaces:

java.lang.Cloneable

public class RC4EncryptionKey

extends StreamEncryptionKey

Author:

Radu Coravu

Constructor Summary

RC4EncryptionKey()

Method Summary

byte[]	decrypt(byte[] toDecrypt, int offset, int length) Decrypt.
byte[]	encrypt(byte[] toEncrypt, int offset, int length) Encrypt.
boolean	isExplicitlySet()
void	reset() Init Ciphers
void	setKey(java.lang.String key) Set the key.

Methods inherited from class ro.raducora.utils.encryption.key.StreamEncryptionKey

clone

Methods inherited from class java.lang.Object

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

Constructor Detail

RC4EncryptionKey

public RC4EncryptionKey()

Method Detail

reset

public void reset()

Init Ciphers

Specified by:

reset in class StreamEncryptionKey

setKey

public void setKey(java.lang.String key)
            throws java.security.InvalidKeyException

Set the key.

Specified by:

setKey in class StreamEncryptionKey

Parameters:

key - the String

java.security.InvalidKeyException

isExplicitlySet

public boolean isExplicitlySet()

Specified by:

isExplicitlySet in class StreamEncryptionKey

Returns:

true if key explicitly set.

encrypt

public byte[] encrypt(byte[] toEncrypt,
                      int offset,
                      int length)

Encrypt.

Specified by:

encrypt in class StreamEncryptionKey

Parameters:

toEncrypt - bytes to encrypt

offset - where to begin

length - how many bytes to process

Returns:

the encrypted array(could be different size than input because of padding)

decrypt

public byte[] decrypt(byte[] toDecrypt,
                      int offset,
                      int length)

Decrypt.

Specified by:

decrypt in class StreamEncryptionKey

Parameters:

toDecrypt - bytes to decrypt

offset - where to begin

length - how many bytes to process

Returns:

the decrypted array(could be different size than input because of padding removal)