Package org.apache.plc4x.java.opcua.context

Class SymmetricEncryptionHandler

java.lang.Object

org.apache.plc4x.java.opcua.context.SymmetricEncryptionHandler

public class SymmetricEncryptionHandler
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
protected Conversation	conversation
protected static int	SECURE_MESSAGE_HEADER_SIZE
protected SecurityPolicy	securityPolicy
protected static int	SEQUENCE_HEADER_SIZE

Constructor Summary

Constructors

Constructor	Description
SymmetricEncryptionHandler(Conversation channel, SecurityPolicy policy)

Method Summary

Modifier and Type	Method	Description
MessagePDU	decodeMessage(Chunk chunk, MessagePDU message)
protected int	decrypt(WriteBufferByteBased chunkBuffer, Chunk chunk, int messageLength)
List<MessagePDU>	encodeMessage(Chunk chunk, MessagePDU message, Supplier<Integer> sequenceSupplier)
protected void	encrypt(WriteBufferByteBased buffer, int securityHeaderSize, int plainTextBlockSize, int cipherTextBlockSize, int blockCount)
protected byte[]	sign(byte[] data)
protected void	verify(WriteBufferByteBased buffer, Chunk chunk, int messageLength)

Methods inherited from class java.lang.Object

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

Field Detail

SECURE_MESSAGE_HEADER_SIZE

protected static final int SECURE_MESSAGE_HEADER_SIZE

See Also:

Constant Field Values

SEQUENCE_HEADER_SIZE

protected static final int SEQUENCE_HEADER_SIZE

See Also:

Constant Field Values

conversation

protected final Conversation conversation

securityPolicy

protected final SecurityPolicy securityPolicy

Constructor Detail

SymmetricEncryptionHandler

public SymmetricEncryptionHandler(Conversation channel,
                                  SecurityPolicy policy)

Method Detail

verify

protected void verify(WriteBufferByteBased buffer,
                      Chunk chunk,
                      int messageLength)
               throws Exception

Throws:

Exception

decrypt

protected int decrypt(WriteBufferByteBased chunkBuffer,
                      Chunk chunk,
                      int messageLength)
               throws Exception

Throws:

Exception

encrypt

protected void encrypt(WriteBufferByteBased buffer,
                       int securityHeaderSize,
                       int plainTextBlockSize,
                       int cipherTextBlockSize,
                       int blockCount)
                throws Exception

Throws:

Exception

sign

protected byte[] sign(byte[] data)
               throws GeneralSecurityException

Throws:

GeneralSecurityException

encodeMessage

public final List<MessagePDU> encodeMessage(Chunk chunk,
                                            MessagePDU message,
                                            Supplier<Integer> sequenceSupplier)

decodeMessage

public final MessagePDU decodeMessage(Chunk chunk,
                                      MessagePDU message)