iaik.security.ssl
Class CompressionMethod

java.lang.Object
  |
  +--iaik.security.ssl.CompressionMethod

Direct Known Subclasses:

NullCompression

public abstract class CompressionMethod

extends java.lang.Object

Defines the compression methods supported in SSL Version 3.0. SSL v3.0 does not define any standard compression methods but allows user defined compression methods.

Field Summary

static CompressionMethod

NULL_COMPRESSION

Constructor Summary

protected

CompressionMethod(java.lang.String name, int id) This constructor is called from a class which implements a specific compression method.

Method Summary

protected abstract int	compress(byte[] in, int inOff, int inLen, byte[] out, int outOff) Performs the compress operation.
protected abstract int	decompress(byte[] in, int inOff, int inLen, byte[] out, int outOff) Performs the decompress operation.
static CompressionMethod[]	getDefault() Returns an array with the default compression methods.
int	getID() Returns the identifier of this compression method.
java.lang.String	getName() Returns the name of this compression method.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

NULL_COMPRESSION

public static final CompressionMethod NULL_COMPRESSION

Constructor Detail

CompressionMethod

protected CompressionMethod(java.lang.String name,
                            int id)

This constructor is called from a class which implements a specific compression method.

Method Detail

getName

public final java.lang.String getName()

Returns the name of this compression method.

Returns:

the name of this compression method

getID

public final int getID()

Returns the identifier of this compression method.

Returns:

the identifier of this compression method

compress

protected abstract int compress(byte[] in,
                                int inOff,
                                int inLen,
                                byte[] out,
                                int outOff)
                         throws java.util.zip.DataFormatException

Performs the compress operation. Implemented by a subclass.

Parameters:

in - the byte array holding the data to be processed

inOff - the offset indicating the start position within the in byte array

inLen - the number of bytes to be processed

out - the byte array for holding the result

outOff - the offset indicating the start position within the out byte array

Returns:

the number of bytes that are stored in the out byte array

decompress

protected abstract int decompress(byte[] in,
                                  int inOff,
                                  int inLen,
                                  byte[] out,
                                  int outOff)
                           throws java.util.zip.DataFormatException

Performs the decompress operation. Implemented by a subclass.

Parameters:

in - the byte array holding the data to be processed

inOff - the offset indicating the start position within the in byte array

inLen - the number of bytes to be processed

out - the byte array for holding the result

outOff - the offset indicating the start position within the out byte array

Returns:

the number of bytes that are stored in the out byte array

getDefault

public static CompressionMethod[] getDefault()

Returns an array with the default compression methods. Currently this is always an array with NullCompression as its only element.

Returns:

an array with the default compression methods

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object