opencard.core.terminal
Class ResponseAPDU

java.lang.Object
  |
  +--opencard.core.terminal.APDU
        |
        +--opencard.core.terminal.ResponseAPDU

public class ResponseAPDU

extends APDU

A ResponseAPDU represents a Response Application Protocol Data Unit received from the smart card in response to a previous CommandAPDU. A response APDU consists of an optional body and a mandatory trailer.

Fields inherited from class opencard.core.terminal.APDU

apdu_buffer, apdu_length

Constructor Summary

ResponseAPDU(byte[] apdu)
Creates a new object of this type and initializes it with the given apdu buffer.

ResponseAPDU(int size)
Constructs an object of this type with the given buffer size.

Method Summary

byte[]	data() Gets the data fields of the APDU.
int	sw() Gets the value of SW1 and SW2 as a short integer.
byte	sw1() Gets the value of SW1 as a byte.
byte	sw2() Gets the value of SW1 as a byte.

Methods inherited from class opencard.core.terminal.APDU

append, append, getBuffer, getByte, getBytes, getLength, setByte, setLength, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ResponseAPDU

public ResponseAPDU(byte[] apdu)

Creates a new object of this type and initializes it with the given apdu buffer. The internal buffer's length is set to the length of the buffer passed.

Parameters:

buffer - the byte array to be used for holding the APDU

Throws:

OpencardRuntimeException - thrown when apdu is invalid

See Also:

APDU.getLength()

ResponseAPDU

public ResponseAPDU(int size)

Constructs an object of this type with the given buffer size. A new buffer with the given size is allocated. The length of the internally buffered APDU is set to 0.

Parameters:

size - the size of the buffer to create

Throws:

OpencardRuntimeException - thrown when apdu is invalid

See Also:

APDU.getLength()

Method Detail

data

public byte[] data()

Gets the data fields of the APDU.

Returns:

a byte array containing the APDU data field

sw

public final int sw()

Gets the value of SW1 and SW2 as a short integer. It is computed as: (((sw1<<8)&0xFF00) | (sw2&0xFF)).

Returns:

The value (((sw1<<8)&0xFF00) | (sw2&0xFF)) as integer.

sw1

public final byte sw1()

Gets the value of SW1 as a byte.

Returns:

The value of SW1

sw2

public final byte sw2()

Gets the value of SW1 as a byte.

Returns:

The value of SW2