is.logi.crypto.protocols
Class DHKeyExServer
java.lang.Object
|
+--is.logi.crypto.Crypto
|
+--is.logi.crypto.protocols.DHKeyEx
|
+--is.logi.crypto.protocols.DHKeyExServer
- public class DHKeyExServer
- extends DHKeyEx
- implements InterKeyExServer
Diffie-Hellman key exchange server. It expects to talk to a
DHKeyExClient object.
- Author:
- Logi Ragnarsson
(logir@hi.is)
- See Also:
DHKeyExClient
Constructor Summary |
DHKeyExServer(DHKey pri,
java.lang.String keyType)
Create a new DHKeyExServer object. |
DHKeyExServer(int n,
java.lang.String keyType)
Create a new DHKeyExClient object. |
Method Summary |
byte[] |
message(byte[] received)
Get the next message in the protocol.
|
Methods inherited from class is.logi.crypto.Crypto |
binString,
binString,
equal,
equalRelaxed,
equalSub,
fromHexNibble,
fromHexString,
fromString,
fromString,
hexString,
hexString,
hexString,
hexString,
makeClass,
makeInt,
makeLong,
makeSessionKey,
pastSpace,
pickBits,
pickBits,
readInt,
writeBytes,
writeBytes,
writeInt |
Methods inherited from class java.lang.Object |
equals,
getClass,
hashCode,
notify,
notifyAll,
toString,
wait,
wait,
wait |
DHKeyExServer
public DHKeyExServer(DHKey pri,
java.lang.String keyType)
throws KeyException
- Create a new DHKeyExServer object. It uses
the private DH key from
pri
.
- Throws:
- KeyException - if the key is not private.
DHKeyExServer
public DHKeyExServer(int n,
java.lang.String keyType)
- Create a new DHKeyExClient object. It uses
an
n
bit modulus and the named key type.
There are pre-computed public modulus and gnerator pairs for
these values of n
: 256, 512, 1024, 2048. Using
one of these values saves you from a rather long wait.
message
public byte[] message(byte[] received)
throws ProtocolException
- Get the next message in the protocol.
received
is the last message received form the client
and has not yet been sent to the client.
The returned value is the next message to send to the client or null
if no more messages need to be sent and the protocol is terminated.
- Throws:
- ProtocolException - if a problem arises with the protocol.
Copyright 1997-1999 Logi Ragnarsson