net.sf.jrtps.udds.security

Class CipherTransformer

java.lang.Object

net.sf.jrtps.udds.security.CipherTransformer

All Implemented Interfaces:

Transformer

public class CipherTransformer
extends Object
implements Transformer

CipherTransformer uses javax.crypto.Cipher to encode and decode payload.

Author:

mcr70

See Also:

Cipher

Field Summary

Fields

Modifier and Type	Field and Description
static int	AES_KIND
static String	AES_NAME

Constructor Summary

Constructors

Constructor and Description
CipherTransformer(String cipherName, int kind) Constructor for CipherTransformer.

Method Summary

Modifier and Type	Method and Description
RTPSByteBuffer	decode(Key key, SecurePayload payload) Decodes a given SecurePayload
SecurePayload	encode(Key key, RTPSByteBuffer bb) Encodes RTPSByteBuffer into SecurePayload.
String	getName() Gets the name of this transformer.
int	getTransformationKind() Gets the transformation kind used by this transformer.

Methods inherited from class java.lang.Object

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

Field Detail

AES_KIND

public static final int AES_KIND

See Also:

Constant Field Values

AES_NAME

public static final String AES_NAME

See Also:

Constant Field Values

Constructor Detail

CipherTransformer

public CipherTransformer(String cipherName,
                         int kind)
                  throws NoSuchAlgorithmException,
                         NoSuchPaddingException

Constructor for CipherTransformer. An instance of Cipher is obtained by calling Cipher.getInstance(cipherName).

Parameters:

cipherName - Name of the transformation

kind - transformationKind

Throws:

NoSuchAlgorithmException - on NoSuchAlgorithmException

NoSuchPaddingException - on NoSuchPaddingException

Method Detail

getTransformationKind

public int getTransformationKind()

Description copied from interface: Transformer

Gets the transformation kind used by this transformer. Kind of the transformation is transferred to remote entity, so that remote entity can associate a correct Transformer to decode incoming message

Specified by:

getTransformationKind in interface Transformer

Returns:

transformationKind

getName

public String getName()

Description copied from interface: Transformer

Gets the name of this transformer. Name of the transformer may be used in configuration file.

Specified by:

getName in interface Transformer

Returns:

Name of the transformer

encode

public SecurePayload encode(Key key,
                            RTPSByteBuffer bb)
                     throws SecurityException

Description copied from interface: Transformer

Encodes RTPSByteBuffer into SecurePayload.

Specified by:

encode in interface Transformer

Parameters:

key - Key

bb - RTPSByteBuffer RTPSByteBuffer to encode. Position should be placed at the end of buffer.

Returns:

SecurePayload

Throws:

SecurityException - on SecurityException

decode

public RTPSByteBuffer decode(Key key,
                             SecurePayload payload)
                      throws SecurityException

Description copied from interface: Transformer

Decodes a given SecurePayload

Specified by:

decode in interface Transformer

Parameters:

key - Key

payload - Payload to decode

Returns:

RTPSByteBuffer

Throws:

SecurityException - on SecurityException