Haller Piroska
Using Planetlab to Implement Multicast at the Application Level.
Tue, 02/01/2011 - 16:01 — SomNambulAuthors: Genge Bela, Haller Piroska
Subjects: and Cluster Computing, Distributed, Parallel
AbstractApplication-layer multicast implements the multicast functionality at the
application layer. The main goal of application-layer multicast is to construct
and maintain efficient distribution structures between endhosts. In this paper
we focus on the implementation of an application-layer multicast network using
PlanetLab. We observe that the total time required to measure network latency
over TCP is influenced dramatically by the TCP connection time.Certificate-based Single Sign-On Mechanism for Multi-Platform Distributed Systems.
Thu, 09/10/2009 - 10:12 — SomNambulAuthors: Magyari Attila, Genge Bela, Haller Piroska
Subjects: Cryptography and Security
AbstractWe propose a certificate-based single sign-on mechanism in distributed
systems. The proposed security protocols and authentication mechanisms are
integrated in a middleware. The novelty of our middleware lies on the use of
XPCOM components, this way we provide a different services that can be used on
every platform where Mozilla is available. The componen based architecture of
the implemented services allows using the authentication components separately.Extending WS-Security to Implement Security Protocols for Web Services.
Thu, 09/10/2009 - 10:12 — SomNambulAuthors: Genge Bela, Haller Piroska
Subjects: Cryptography and Security
AbstractWeb services use tokens provided by the WS-Security standard to implement
security protocols. We propose several extensions to the WS-Security standard,
including name types, key and random number extensions. The extensions are used
to implement existing protocols such as ISO9798, Kerberos or BAN-Lowe. The
advantages of using these implementations rather than the existing, binary
ones, are inherited from the advantages of using Web service technologies, such
as extensibility and end-to-end security across multiple environments that do
not support a connection-based communication.
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