gnu.crypto.key

Class IncomingMessage

public class IncomingMessage extends Object

An implementation of an incoming message for use with key agreement protocols.

Version: $Revision: 1.2 $

Field Summary
protected ByteArrayInputStreamin
The internal buffer stream containing the message's contents.
protected intlength
The length of the message contents, according to its 4-byte header.
Constructor Summary
IncomingMessage(byte[] b)

Constructs an incoming message given the message's encoded form, including its header bytes.

Method Summary
static intfourBytesToLength(byte[] b)

Converts four octets into the number that they represent.

static IncomingMessagegetInstance(byte[] raw)

Returns an instance of a message given its encoded contents, excluding the message's header bytes.

Calls the method with the same name and three arguments as: getInstance(raw, 0, raw.length).

static IncomingMessagegetInstance(byte[] raw, int offset, int len)

Returns an instance of a message given its encoded contents, excluding the message's header bytes.

booleanhasMoreElements()
BigIntegerreadMPI()

Decodes an MPI from the current message's contents.

PrivateKeyreadPrivateKey()
PublicKeyreadPublicKey()
StringreadString()
static inttwoBytesToLength(byte[] b)

Converts two octets into the number that they represent.

Field Detail

in

protected ByteArrayInputStream in
The internal buffer stream containing the message's contents.

length

protected int length
The length of the message contents, according to its 4-byte header.

Constructor Detail

IncomingMessage

public IncomingMessage(byte[] b)

Constructs an incoming message given the message's encoded form, including its header bytes.

Parameters: b the encoded form, including the header bytes, of an incoming message.

Throws: KeyAgreementException if the buffer is malformed.

Method Detail

fourBytesToLength

public static int fourBytesToLength(byte[] b)

Converts four octets into the number that they represent.

Parameters: b the four octets.

Returns: the length.

getInstance

public static IncomingMessage getInstance(byte[] raw)

Returns an instance of a message given its encoded contents, excluding the message's header bytes.

Calls the method with the same name and three arguments as: getInstance(raw, 0, raw.length).

Parameters: raw the encoded form, excluding the header bytes.

Returns: a new instance of IncomingMessage.

getInstance

public static IncomingMessage getInstance(byte[] raw, int offset, int len)

Returns an instance of a message given its encoded contents, excluding the message's header bytes.

Parameters: raw the encoded form, excluding the header bytes. offset offset where to start using raw bytes from. len number of bytes to use.

Returns: a new instance of IncomingMessage.

hasMoreElements

public boolean hasMoreElements()

readMPI

public BigInteger readMPI()

Decodes an MPI from the current message's contents.

Returns: a native representation of an MPI.

Throws: KeyAgreementException if an encoding exception occurs during the operation.

readPrivateKey

public PrivateKey readPrivateKey()

readPublicKey

public PublicKey readPublicKey()

readString

public String readString()

twoBytesToLength

public static int twoBytesToLength(byte[] b)

Converts two octets into the number that they represent.

Parameters: b the two octets.

Returns: the length.

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