net.sf.jrtps.udds.security

Class CompositeTransformer

java.lang.Object

net.sf.jrtps.udds.security.CompositeTransformer

All Implemented Interfaces:

Transformer

public class CompositeTransformer
extends Object
implements Transformer

CompositeTransformer joins two transformations. During encoding, bytes are first encoded with the first Tranformer. Result of the first transformation is input to second transformation. Decoding is performed on reverse order.

Author:

mcr70

Field Summary

Fields

Modifier and Type	Field and Description
static int	AES_HMAC_SHA1
static int	AES_HMAC_SHA256

Constructor Summary

Constructors

Constructor and Description
CompositeTransformer(Transformer tr1, Transformer tr2, int kind) Constructor for CompositeTransformer.

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() Name of this CompositeTransformer.
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_HMAC_SHA1

public static final int AES_HMAC_SHA1

See Also:

Constant Field Values

AES_HMAC_SHA256

public static final int AES_HMAC_SHA256

See Also:

Constant Field Values

Constructor Detail

CompositeTransformer

public CompositeTransformer(Transformer tr1,
                            Transformer tr2,
                            int kind)

Constructor for CompositeTransformer.

Parameters:

tr1 - First Tranformer

tr2 - Second Transformer

kind - transformationKind

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()

Name of this CompositeTransformer. Name is composed by concatenating names of the Transformers. For example AESHmacSHA1.

Specified by:

getName in interface Transformer

Returns:

name

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