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java.lang.Objectnet.jini.core.constraint.ServerAuthentication
public final class ServerAuthentication
Represents a constraint on authentication of the server to the client.
Network authentication by a server (to a client) is implementation-specific,
but typically is also scoped and controlled by a Subject
. The
server subject normally is contained in the
Exporter
used to export that remote
object and is taken from the current thread when the exporter is
constructed. However, a server might use one subject to control its local
execution and a different subject to control its network authentication.
A server generally must have permission (such as
AuthenticationPermission
) to authenticate itself
to clients.
It is important to understand that specifying
ServerAuthentication.YES
as a requirement does not
ensure that a server is to be trusted; it does ensure that the
server authenticates itself as someone, but it does not ensure that the
server authenticates itself as anyone in particular. Without knowing who
the server authenticated itself as, there is no basis for actually
trusting the server. The client generally needs to specify a
ServerMinPrincipal
requirement in addition, or else verify
that the server has specified a satisfactory
ServerMinPrincipal
requirement for each of the methods that
the client cares about.
Serialization for this class is guaranteed to produce instances that are
comparable with ==
.
ServerMinPrincipal
,
AuthenticationPermission
,
Serialized FormField Summary | |
---|---|
static ServerAuthentication |
NO
Do not authenticate the server to the client, so that the server remains anonymous. |
private static long |
serialVersionUID
|
private boolean |
val
true for YES , false for
NO |
static ServerAuthentication |
YES
Authenticate the server to the client. |
Constructor Summary | |
---|---|
private |
ServerAuthentication(boolean val)
Simple constructor. |
Method Summary | |
---|---|
private Object |
readResolve()
Canonicalize so that == can be used. |
String |
toString()
Returns a string representation of this object. |
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Field Detail |
---|
private static final long serialVersionUID
public static final ServerAuthentication YES
public static final ServerAuthentication NO
private final boolean val
true
for YES
, false
for
NO
Constructor Detail |
---|
private ServerAuthentication(boolean val)
val
- true
for YES
, false
for NO
Method Detail |
---|
public String toString()
toString
in class Object
private Object readResolve()
==
can be used.
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