Class QRAuthServer

All Implemented Interfaces:
InterAuthServer, InterProtocolServer

public class QRAuthServer
extends QRAuth
implements InterAuthServer

Query-response authenticaton server. It expects to talk to a QRAuthClient object.

If the protocol is completed, the server is certain that the client also knows the secret key passed to the constructor.

Logi Ragnarsson (
See Also:

Fields inherited from class org.logi.crypto.Crypto
BIT, cdsPath, EMPTY_ARRAY, FOUR, keySource, NIBBLE, ONE, primeCertainty, random, TWO, ZERO
Constructor Summary
QRAuthServer(CipherKey key)
          Creates a new QRAuthServer object with the specified secret key.
Method Summary
 byte[] message(byte[] received)
          Get the next message in the protocol.
Methods inherited from class org.logi.crypto.protocols.QRAuth
completed, maxMessageSize
Methods inherited from class org.logi.crypto.Crypto
binString, binString, equal, equalRelaxed, equalSub, fromHexNibble, fromHexString, fromString, fromString, hexString, hexString, hexString, hexString, hexString, initRandom, initRandom, makeClass, makeInt, makeLong, makeSessionKey, pastSpace, pickBits, pickBits, readBlock, readInt, writeBytes, writeBytes, writeInt
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Methods inherited from interface org.logi.crypto.protocols.InterProtocolServer
completed, maxMessageSize

Constructor Detail


public QRAuthServer(CipherKey key)
Creates a new QRAuthServer object with the specified secret key.
Method Detail


public byte[] message(byte[] received)
               throws CryptoProtocolException
Get the next message in the protocol.

received is the last message received form the server and has not yet been sent to the client.

The returned value is the next message to send to the server or null if no more messages need to be sent and the protocol is terminated.

Specified by:
message in interface InterProtocolServer
CryptoProtocolException - if a problem arises with the protocol.

Copyright 1997-2000 Logi Ragnarsson