com.openstego.desktop

Class OpenStegoCrypto

java.lang.Object

com.openstego.desktop.OpenStegoCrypto

public class OpenStegoCrypto
extends java.lang.Object

This is the class for providing cryptography support to OpenStego.

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	ALGO_AES128 Constant for algorithm - AES128
static java.lang.String	ALGO_AES256 Constant for algorithm - AES256
static java.lang.String	ALGO_DES Constant for algorithm - DES

Constructor Summary

Constructors

Constructor and Description
OpenStegoCrypto(java.lang.String password, java.lang.String algorithm) Default constructor

Method Summary

Modifier and Type	Method and Description
byte[]	decrypt(byte[] input) Method to decrypt the data
byte[]	encrypt(byte[] input) Method to encrypt the data

Methods inherited from class java.lang.Object

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

Field Detail

ALGO_DES

public static final java.lang.String ALGO_DES

Constant for algorithm - DES

See Also:

Constant Field Values

ALGO_AES128

public static final java.lang.String ALGO_AES128

Constant for algorithm - AES128

See Also:

Constant Field Values

ALGO_AES256

public static final java.lang.String ALGO_AES256

Constant for algorithm - AES256

See Also:

Constant Field Values

Constructor Detail

OpenStegoCrypto

public OpenStegoCrypto(java.lang.String password,
                       java.lang.String algorithm)
                throws OpenStegoException

Default constructor

Parameters:

password - Password to use for encryption

algorithm - Cryptography algorithm to use. If null or blank value is provided, then it defaults to AES128

Throws:

OpenStegoException

Method Detail

encrypt

public byte[] encrypt(byte[] input)
               throws OpenStegoException

Method to encrypt the data

Parameters:

input - Data to be encrypted

Returns:

Encrypted data

Throws:

OpenStegoException

decrypt

public byte[] decrypt(byte[] input)
               throws OpenStegoException

Method to decrypt the data

Parameters:

input - Data to be decrypted

Returns:

Decrypted data (returns null if password is invalid)

Throws:

OpenStegoException