org.logi.crypto.protocols
Class DHKeyExNoninter
java.lang.Object
|
+--org.logi.crypto.Crypto
|
+--org.logi.crypto.protocols.DHKeyEx
|
+--org.logi.crypto.protocols.DHKeyExNoninter
- All Implemented Interfaces:
- InterKeyExClient, InterKeyExServer, InterProtocolClient, InterProtocolServer, NoninterKeyExClient, NoninterKeyExServer, NoninterProtocolClient, NoninterProtocolServer, PrettyPrintable
- public class DHKeyExNoninter
- extends DHKeyEx
- implements NoninterKeyExClient, NoninterKeyExServer
Diffie-Hellman key exchange without exchanging keys. Both parties
need to know the other party's public DHKey. No messages are
sent in either direction, but a unique session key is created for each
pair of Diffie-Hellman keys used.
This class is both the client and server for the protocol.
- Author:
- Logi Ragnarsson
(logir@logi.org)
- See Also:
DHKeyExServer
,
DHKeyExClient
,
DHKey
Fields inherited from class org.logi.crypto.Crypto |
BIT, cdsPath, EMPTY_ARRAY, FOUR, keySource, NIBBLE, ONE, primeCertainty, random, TWO, ZERO |
Constructor Summary |
DHKeyExNoninter(DHKey pri,
DHKey pub,
java.lang.String keyType)
Create a new DHKeyExClient object which uses
the private DH key from pri and the public
DH key from pri to generate a session key. |
Method Summary |
byte[] |
message(byte[] received)
Expects and sends null, since no messages are needed for this protocol. |
Methods inherited from class org.logi.crypto.Crypto |
binString, binString, ensureArrayLength, ensureArrayLength, equal, equalRelaxed, equalSub, fromHexNibble, fromHexString, fromString, fromString, hexString, hexString, hexString, hexString, hexString, initRandom, initRandom, makeClass, makeInt, makeLong, makeSessionKey, pastSpace, pickBits, pickBits, prettyPrint, prettyPrint, readBlock, readInt, trimArrayLength, trimArrayLength, trimLeadingZeroes, writeBytes, writeBytes, writeInt |
Methods inherited from class java.lang.Object |
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
DHKeyExNoninter
public DHKeyExNoninter(DHKey pri,
DHKey pub,
java.lang.String keyType)
throws KeyException,
InvalidCDSException
- Create a new DHKeyExClient object which uses
the private DH key from
pri
and the public
DH key from pri
to generate a session key.
- Throws:
KeyException
- if the public/private flag of either key
is wrong.InvalidCDSException
- if the session key object can not
be created.
message
public byte[] message(byte[] received)
throws CryptoProtocolException
- Expects and sends null, since no messages are needed for this protocol.
- Specified by:
message
in interface InterProtocolClient
- Throws:
CryptoProtocolException
- if called with a parameter other than null.
Copyright 1997-2000 Logi Ragnarsson