Module org.sejda.sambox

Package org.sejda.sambox.encryption

Class ConcatenatingAESEngine

java.lang.Object

org.sejda.sambox.encryption.AESEngineNoPadding

org.sejda.sambox.encryption.ConcatenatingAESEngine

All Implemented Interfaces:

AESEncryptionAlgorithmEngine, EncryptionAlgorithmEngine

public class ConcatenatingAESEngine
extends AESEngineNoPadding

AES implementation of a EncryptionAlgorithmEngine that concatenates the results to the initialization vectors as required by Algorithm 1 and 1A. A random IV is created for those methods that don't take one as parameter

Field Summary

Fields

Modifier and Type	Field	Description
private final SecureRandom	random

Constructor Summary

Constructors

Constructor	Description
ConcatenatingAESEngine()

Method Summary

Modifier and Type	Method	Description
byte[]	encryptBytes(byte[] data, byte[] key)
byte[]	encryptBytes(byte[] data, byte[] key, byte[] iv)
InputStream	encryptStream(InputStream data, byte[] key)
InputStream	encryptStream(InputStream data, byte[] key, byte[] iv)
private byte[]	initializationVector()

Methods inherited from class org.sejda.sambox.encryption.AESEngineNoPadding

cbc, ecb

Methods inherited from class java.lang.Object

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

Field Details

random

private final SecureRandom random

Constructor Details

ConcatenatingAESEngine

ConcatenatingAESEngine()

Method Details

encryptStream

public InputStream encryptStream(InputStream data,
 byte[] key)

Specified by:

encryptStream in interface EncryptionAlgorithmEngine

Overrides:

encryptStream in class AESEngineNoPadding

Parameters:

data - data to encrypt

Returns:

a stream where encrypted data can be read from

encryptStream

public InputStream encryptStream(InputStream data,
 byte[] key,
 byte[] iv)

Specified by:

encryptStream in interface AESEncryptionAlgorithmEngine

Overrides:

encryptStream in class AESEngineNoPadding

Returns:

a stream encrypted with the given key and initialization vector

encryptBytes

public byte[] encryptBytes(byte[] data,
 byte[] key)

Specified by:

encryptBytes in interface EncryptionAlgorithmEngine

Overrides:

encryptBytes in class AESEngineNoPadding

Parameters:

data - data to encrypt

Returns:

the encrypted data

encryptBytes

public byte[] encryptBytes(byte[] data,
 byte[] key,
 byte[] iv)

Specified by:

encryptBytes in interface AESEncryptionAlgorithmEngine

Overrides:

encryptBytes in class AESEngineNoPadding

Returns:

the byte array encrypted with the given key and initialization vector

initializationVector

private byte[] initializationVector()