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Displaying 1-17 out of 17 total
Fault Tolerance Middleware for Cloud Computing
Found in: Cloud Computing, IEEE International Conference on
By Wenbing Zhao, P.M. Melliar-Smith, L.E. Moser
Issue Date:July 2010
pp. 67-74
The Low Latency Fault Tolerance (LLFT) middleware provides fault tolerance for distributed applications deployed within a cloud computing or data center environment, using the leader/follower replication approach. The LLFT middleware consists of a Low Late...
 
Integrity-Preserving Replica Coordination for Byzantine Fault Tolerant Systems
Found in: Parallel and Distributed Systems, International Conference on
By Wenbing Zhao
Issue Date:December 2008
pp. 447-454
The use of good random numbers is essential to the integrity of many mission-critical systems. However, when such systems are replicated for Byzantine fault tolerance, a serious issue arises, i.e., how do we preserve the integrity of the systems while ensu...
 
Byzantine Fault Tolerance for Electric Power Grid Monitoring and Control
Found in: Embedded Software and Systems, Second International Conference on
By Wenbing Zhao, F. Eugenio Villaseca
Issue Date:July 2008
pp. 129-135
The stability of the electric power grid is crucial to every nation's security and well-being. As revealed by a number of large-scale blackout incidents in North America, the data communication infrastructure for power grid is in urgent need of transformat...
 
Byzantine Fault Tolerant Coordination for Web Services Business Activities
Found in: Services Computing, IEEE International Conference on
By Wenbing Zhao, Honglei Zhang
Issue Date:July 2008
pp. 407-414
In this paper, we present a comprehensive study on the threats towards the coordination services for Web services business activities and explore the most optimal solution to mitigate such threats. A careful analysis of the state model of the coordination ...
 
A Lightweight Fault Tolerance Framework for Web Services
Found in: Web Intelligence, IEEE / WIC / ACM International Conference on
By Wenbing Zhao
Issue Date:November 2007
pp. 542-548
In this paper, we present the design and implementation of a lightweight fault tolerance framework for Web services. With our framework, a Web service can be rendered fault tolerant by replicating it across several nodes. A consensusbased algorithm is used...
 
Byzantine Fault Tolerance for Nondeterministic Applications
Found in: Dependable, Autonomic and Secure Computing, IEEE International Symposium on
By Wenbing Zhao
Issue Date:September 2007
pp. 108-118
All practical applications contain some degree of nondeterminism. When such applications are replicated to achieve Byzantine fault tolerance (BFT), their nondeterministic operations must be controlled to ensure replica consistency. To the best of our knowl...
 
A Byzantine Fault Tolerant Distributed Commit Protocol
Found in: Dependable, Autonomic and Secure Computing, IEEE International Symposium on
By Wenbing Zhao
Issue Date:September 2007
pp. 37-46
In this paper, we present a Byzantine fault tolerant distributed commit protocol for transactions running over untrusted networks. The traditional two-phase commit protocol is enhanced by replicating the coordinator and by running a Byzantine agreement alg...
 
A Reservation-Based Coordination Protocol for Web Services
Found in: Web Services, IEEE International Conference on
By Wenbing Zhao, L. E. Moser, P. M. Melliar-Smith
Issue Date:July 2005
pp. 49-56
Traditional transaction semantics are not appropriate for business activities that involve long-running transactions in a loosely-coupled distributed environment, in particular, for Web Services that operate between different enterprises over the Internet....
 
Deterministic Scheduling for Multithreaded Replicas
Found in: Object-Oriented Real-Time Dependable Systems, IEEE International Workshop on
By Wenbing Zhao, L. E. Moser, P. M. Melliar-Smith
Issue Date:February 2005
pp. 74-81
<p>Replication of objects, processes and components is essential for building reliable distributed systems. However, maintaining replica consistency in the presence of nondeterminism is a challenge. There are many sources of nondeterminism in the app...
 
BFT-WS: A Byzantine Fault Tolerance Framework for Web Services
Found in: Enterprise Distributed Object Computing Conference Workshops, IEEE International
By Wenbing Zhao
Issue Date:October 2007
pp. 89-96
Many Web services are expected to run with high degree of security and dependability. To achieve this goal, it is essential to use a Web-services compatible framework that tolerates not only crash faults, but Byzantine faults as well, due to the untrusted ...
 
A Framework for Enhancing Security and Privacy on Unmodified Mobile Operating Systems
Found in: 2013 IEEE 33rd International Conference on Distributed Computing Systems Workshops (ICDCSW)
By Brian Krupp,Nigamanth Sridhar, Wenbing Zhao
Issue Date:July 2013
pp. 404-409
Mobile device utilization continues to experience considerable growth and the privacy and security of these devices are becoming more critical with their continued rise in utilization. In this paper, we discuss the components of a mobile operating system t...
 
Toward Trustworthy Coordination of Web Services Business Activities
Found in: IEEE Transactions on Services Computing
By Hua Chai,Honglei Zhang,Wenbing Zhao,P. Michael Melliar-Smith,Louise E. Moser
Issue Date:April 2013
pp. 276-288
We present a lightweight Byzantine fault tolerance (BFT) algorithm, which can be used to render the coordination of web services business activities (WS-BA) more trustworthy. The lightweight design of the BFT algorithm is the result of a comprehensive stud...
 
Trustworthy Coordination of Web Services Atomic Transactions
Found in: IEEE Transactions on Parallel and Distributed Systems
By Honglei Zhang,Hua Chai,Wenbing Zhao,P. Michael Melliar-Smith,Louise E. Moser
Issue Date:August 2012
pp. 1551-1565
The Web Services Atomic Transactions (WS-AT) specification makes it possible for businesses to engage in standard distributed transaction processing over the Internet using Web Services technology. For such business applications, trustworthy coordination o...
 
A Reservation-Based Extended Transaction Protocol
Found in: IEEE Transactions on Parallel and Distributed Systems
By Wenbing Zhao, Louise E. Moser, P. M. Melliar-Smith
Issue Date:February 2008
pp. 188-203
With the advent of the new generation of Internet-based technology, in particular Web Services, the automation of business activities that are distributed across multiple enterprises becomes possible. Business activities are different from traditional tran...
 
Unification of Transactions and Replication in Three-Tier Architectures Based on CORBA
Found in: IEEE Transactions on Dependable and Secure Computing
By Wenbing Zhao, Louise E. Moser, P. Michael Melliar-Smith
Issue Date:January 2005
pp. 20-33
In this paper, we describe a software infrastructure that unifies transactions and replication in three-tier architectures and provides data consistency and high availability for enterprise applications. The infrastructure uses transactions based on the CO...
 
Leader-Determined Membership Protocol
Found in: High-Assurance Systems Engineering, IEEE International Symposium on
By Wenbing Zhao,P.M. Melliar-Smith,L.E. Moser
Issue Date:November 2011
pp. 124-129
Many fault-tolerant systems organize the replicas of an application process as a process group. The Leader-Determined Membership Protocol determines a new membership for the process group, when a member becomes faulty, a member leaves the group, or a new m...
 
Towards practical intrusion tolerant systems: a blueprint
Found in: Proceedings of the 4th annual workshop on Cyber security and informaiton intelligence research: developing strategies to meet the cyber security and information intelligence challenges ahead (CSIIRW '08)
By Wenbing Zhao
Issue Date:May 2008
pp. N/A
In this paper, we present the blueprint of a novel middleware infrastructure that can be used to build mission-critical systems with increased resiliency against intrusion attacks. The infrastructure is designed to be practical and it imposes a well-define...
     
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