ro.raducora.utils.encryption.key
Class StreamEncryptionKey

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

All Implemented Interfaces:

java.lang.Cloneable

Direct Known Subclasses:

DefaultEncryptionKey, RC4EncryptionKey

public abstract class StreamEncryptionKey

extends java.lang.Object

implements java.lang.Cloneable

Author:

Radu Coravu

Constructor Summary

StreamEncryptionKey()

Method Summary

java.lang.Object	clone() Clone Supported.
abstract byte[]	decrypt(byte[] toDecrypt, int offset, int length) Takes an array of bytes and decrypts it
abstract byte[]	encrypt(byte[] toEncrypt, int offset, int length) Takes an array of bytes and encodes it with key
abstract boolean	isExplicitlySet()
abstract void	reset() Resets the encryption/decryption process,initializez variables,etc so that the key can be used as a brand new one
abstract void	setKey(java.lang.String key) Takes a string and makes a key

Methods inherited from class java.lang.Object

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

Constructor Detail

StreamEncryptionKey

public StreamEncryptionKey()

Method Detail

clone

public java.lang.Object clone()
                       throws java.lang.CloneNotSupportedException

Clone Supported.

Overrides:

clone in class java.lang.Object

java.lang.CloneNotSupportedException

setKey

public abstract void setKey(java.lang.String key)
                     throws java.lang.Exception

Takes a string and makes a key

Parameters:

key - the String

java.lang.Exception

isExplicitlySet

public abstract boolean isExplicitlySet()

Returns:

True if the key was initialized with a non-default constructor or with the setKey method and false if the key was initialised with the default constructor

reset

public abstract void reset()
                    throws java.lang.Exception

Resets the encryption/decryption process,initializez variables,etc so that the key can be used as a brand new one

java.lang.Exception

encrypt

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

Takes an array of bytes and encodes it with key

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

Takes an array of bytes and decrypts it

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)