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A Hidden Credential Based Oblivious Automated Trust Negotiation Model

A Hidden Credential Based Oblivious Automated Trust Negotiat...

引用

IEEE International Conference on e-Business Engineering (ICEBE)

作者： Zhensong Liao Hai Jin Deqing Zou Services Computing Technology and System Lab Cluster and Grid Computing Lab School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China

Automated trust negotiation (ATN) is an important means to establish trust between strangers through the exchange of digital credentials and access control policies specifying what credentials a stranger must submit in the open and distributed environment. While ATN brings convenience, there are still two issues unsolved successfully: 1) to protect the transmitting message; 2) to prevent the sensitive information leakage. Hidden credential can provide high security level to protect sensitive resources, policies and credentials from being attacked. Zero-knowledge is an important means to avoid leakage and can be used to protect the user's private context and sensitive information from unauthorized inferences. If hidden credentials and zero-knowledge are well-combined and redesigned, they can jointly make ATN better. Based on these, a hidden credential based oblivious automated trust negotiation model (HBOA) is proposed in this paper. In the model, the negotiation information is carried by hidden credentials, which have the same secure level with elliptic curve. Zero-knowledge protocol is provided by Pedersen commitment scheme, which ensures that no sensitive information can be attained by authorized users. A practical example is given to prove its usability.

关键词： Information security Protection Protocols Identity-based encryption Access control Elliptic curves Elliptic curve cryptography Middleware Computers grid computing

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An Asymmetrical Encryption Based automated trust negotiation model

An Asymmetrical Encryption Based automated trust negotiation...

引用

Inaugural IEEE-IES Digital Ecosystems and Technologies Conference, DEST

作者： Hai Jin Zhensong Liao Deqing Zou Chisong Li Services Computing Technology and System Lab Cluster and Grid Computing Lab School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China

ISBN: (纸本)9781424414895

Automated trust negotiation (ATN) is an important means to establish trust between strangers through the exchange of digital credentials and mobile access control policies specifying what combinations of credentials a stranger must submit. As a certificate may contain sensitive information, unlimited disclosure will leak valuable information or jeopardize individual privacy. In order to prevent information leakage, the negotiation protocol is designed so complicated that a requestor is hard to attain the access. In addition, if the encryption algorithm is short in security intensity, the transmitting message over the public channel is easy to be attacked. To solve these problems, an asymmetrical encryption based ATN model (AEBM) is proposed in this paper. AEBM adopts credentials with a flexible format to meet the requirements of access control policies, instead of disclosing the whole contents of a certificate. Further, AEBM uses asymmetric encryption technique to encrypt the transmitting message, which can prevent information from leaking. AEBM presents a new negotiation strategy to enhance the negotiation efficiency. A use case is studied to prove that AEBM is sound and reasonable.

关键词： Cryptography Access control Protocols Public key Educational institutions Authentication Ecosystems

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esDMT: Efficient and scalable deterministic multithreading through memory isolation

esDMT: Efficient and scalable deterministic multithreading t...

引用

International Conference on Parallel and Distributed systems (ICPADS)

作者： Jie Sun Xiaofei Liao Long Zheng Hai Jin Yu Zhang School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China Services Computing Technology and System Lab Cluster and Grid Computing Lab

Deterministic multithreading (DMT) system is well-known to eliminate the harmful program behaviors caused by nondeterminism, i.e., always proceeding the program execution into the same thread schedule for the same given input. To achieve this goal, two kinds of schedules are enforced by existing DMT systems. 1) A mem-based schedule ensures the determinism with the total order of the shared memory accesses, and 2) A sync-based schedule makes it by only enforcing the total order of the synchronization operations. Mem-schedule achieves full determinism but suffers from prohibitive overhead; while sync-schedule mitigates this overhead but cannot ensure the determinism for the race schedules, i.e., part determinism. Much recent research is devoted to the hybrid schedule combining the determinism of mem-schedule and efficiency of sync-schedule. However, they suffer from the practicability and scalability problems due to the defects of their technical characteristics, such as trace collection in advance and huge schedule memoization. To address the above problem, this paper proposes esDMT, an efficient and scalable DMT system using a new technique of memory isolation. It can improve the efficiency by proceeding the execution of each thread in parallel within its private virtual memory, and defers the determinism guarantee by updating private memory into shared memory in a deterministic order according to deterministic lock algorithm, thus further reducing the overhead of inter-thread waiting. In contrast to the previous hybrid work avoiding the nondeterminism of race schedules offline based on the enormous historical records, our key insight is to eliminate the nondeterminism of race schedules online at runtime. Our experimental results on PARSEC benchmarks show that esDMT eliminates the nondeterminism successfully, almost gains the same performance as the sync-schedule (with

关键词： Instruction sets Schedules Synchronization Scalability Clocks Computer crashes Runtime

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Multi-Source Traffic Data Fusion Method Based on Regulation and Reliability

Multi-Source Traffic Data Fusion Method Based on Regulation ...

引用

International Symposium on Parallel and Distributed Processing with Applications, ISPA

作者： Xinhong Wu Hai Jin Services Computing Technology and System Lab Cluster and Grid Computing Lab School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China

This paper provides a new data fusion mechanism based on regulation and reliability to solve the data conflict problems of multi-source heterogeneous data fusion in traffic information engineering. This mechanism evaluates each data source on historical reliability and data source QoS (Quality of Service), and then gives its reliability result. Userspsila reliability on the data source is calculated and dynamically adjusted, then new reliability data of the data source is given, finally the conflict data is fused. The validation of experiment result indicates that the method enhances accuracy and adoption ratio of the collected data in real time greatly.

关键词： Quality of service Paper technology Data engineering Reliability engineering Distributed processing Application software grid computing Computer science Data analysis Delay

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A Scalable Service Scheme for Secure Group Communication in grid

A Scalable Service Scheme for Secure Group Communication in ...

引用

IEEE Annual International Computer Software and Applications Conference (COMPSAC)

作者： Yunfa Li Hai Jin Deqing Zou Jieyun Chen Zongfen Han Services Computing Technology and System Lab Cluster and Grid Computing Lab School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China

In this paper, we propose a scalable service scheme for secure group communication in grid. In the service scheme, a series of methods and strategies are presented, such as the initialization methods for group member, administrative domain and virtual organization, the key distribution strategy and the rekeying strategy. In order to improve the scalability of this service scheme, the services for a group are logically divided into two hierarchical levels, which is in accordance with the characteristics of group communication in grid. In addition, in order to show the efficiency and the scalability of the service scheme, simulation experiments are done. The results show that the service scheme is efficient and scalable. Thus, the service scheme can satisfy the requirement of people in large-scale, dynamic grid environment.

关键词： grid computing Scalability Large-scale systems Information security Public key Computer science Distribution strategy Analytical models Broadcasting Protocols

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Heterogeneous Medical Data Share and Integration on grid

Heterogeneous Medical Data Share and Integration on Grid

引用

International Conference on BioMedical Engineering and Informatics (BMEI)

作者： Ran Zheng Hai Jin Qin Zhang Yingshu Liu Pan Chu Services Computing Technology and System Lab Cluster and Grid Computing Lab School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China

It is very significant for the medical and health enterprises to develop an efficient medical information grid to achieve sufficient medical data share and integration. In order to access heterogeneous data resources transparently, front agent is built on heterogeneous databases or medical systems, the same as the unified data models and mapping rules with grid services to communicate with upper grid middleware, so that users can query or access medical data conveniently. Two medical application instances, medical information integration and content-based image diagnosis or retrieval of emphysema disease, are introduced and realized with these technologies.

关键词： Biomedical imaging Medical diagnostic imaging Image databases Data models Middleware Medical services Biomedical equipment Information retrieval Image retrieval Content based retrieval

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Conch: A Cyclic MapReduce Model for Iterative Applications

Conch: A Cyclic MapReduce Model for Iterative Applications

引用

Euromicro Conference on Parallel, Distributed and Network-Based Processing

作者： Ran Zheng Genmao Yu Hai Jin Xuanhua Shi Qin Zhang Services Computing Technology and System Lab Cluster and Grid Computing Lab School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China

MapReduce programming model is a popular model to simplify but speed up data parallel applications. However, it is not efficient for iterative applications because of its repeated data transmission with HDFS (Hadoop Distributed File system). Conch, a cyclic MapReduce model, is designed for efficient processing of iterative applications. In order to minimize network overhead, shared data is cached locally and a "map-shuffle" phase is presented with a combined transmission mechanism. Meanwhile, a prediction scheduler for iterative applications is brought out to achieve better data locality in terms of runtime information. The experiments show that Conch can support iterative applications transparently and efficiently. Compared with Hadoop and HaLoop in single-job environment, Conch can achieve 13%-17% improvements on K-Means and fuzzy C-Means. Especially in multi-job environment, 63.6% and 28.6% improvements can be obtained compared with Hadoop and HaLoop.

关键词： Delays Iterative methods Computational modeling Prediction algorithms Heart beat Data transfer Data models

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An Authenticated Encryption Mechanism for Secure Group Communication in grid

An Authenticated Encryption Mechanism for Secure Group Commu...

引用

International Conference on Internet computing in Science and Engineering (ICICSE)

作者： Yunfa Li Hai Jin Deqing Zou Sanmin Liu Zongfen Han Services Computing Technology and System Lab Cluster and Grid Computing Lab School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China

In grid computing, group communication is an important strategy to realize large-scale information resource sharing. However, it is very difficult to ensure the security of group communication in large-scale grid environment. In this paper, based on the basic theories of threshold signature and the basic characteristics of group communication in grid, we present four algorithms, including keys generating, individual signature generating and verifying, group signature generating and encrypting, decrypting and group signature verifying, which constitute the authenticated encryption mechanism for group communication in grid. Finally, we validate the correctness of the authenticated encryption mechanism proposed in this paper and analyze its security. In addition, the validity of this mechanism is verified by the experiments. The results show that it is efficient to ensure the security of group communication in grid.

关键词： Cryptography Communication system security Large-scale systems Mobile communication grid computing Character generation Mesh generation Information resources Information security Web and internet services

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Virtual Machine Resource Management for High Performance computing Applications

Virtual Machine Resource Management for High Performance Com...

引用

International Symposium on Parallel and Distributed Processing with Applications, ISPA

作者： Zhiyuan Shao Hai Jin Yong Li Services Computing Technology and System Lab Cluster and Grid Computing Lab School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China

In this paper, we propose a scheme that manages the computational resource of virtual machines that are used to host high performance computing applications. Different from the static configuration methodology employed by the state-of-art virtual machine monitors, in our scheme, the virtual machines are automatically configured according to the actual load generated by the applications. NPB, HPL and kernel compilation are chosen as representative high performance computing applications to run inside the virtual machine constructed using our scheme, and the performance of such applications are compared with that obtained from the statically configured virtual machines. The comparison indicates that besides the great flexibility it brings, the performance penalty resulted by our scheme is below 5% in most cases, and the performance of the application running inside the automatically configured virtual machine is even better than that running inside the statically configured ones in some cases.

关键词： Virtual machining Resource management High performance computing Application software grid computing Virtual machine monitors Kernel Distributed processing Computer science technology management

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A Novel Fast Approach for Convolutional Networks with Small Filters Based on GPU

A Novel Fast Approach for Convolutional Networks with Small ...

引用

IEEE International Conference on High Performance computing and Communications (HPCC)

作者： Wenbin Jiang Yiming Chen Hai Jin Bin Luo Ye Chi Services Computing Technology and System Lab Cluster and Grid Computing Lab School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China

ISBN: (纸本)9781479989386

Recently, convolutional networks have achieved great successes in the field of computer vision. In order to improve the efficiency of convolutional networks, large amount of solutions focusing on training algorithms and parallelism strategies have been proposed. In this paper, a novel algorithm based on look-up table is proposed to speed up convolutional networks with small filters by applying GPU. By transforming multiplication operations in the convolution computation to some table-based summation operations, the overhead of convolution computation can be reduced largely. The process of creating table and looking up table is very appropriate for parallelization on GPU. Experiment results show that the proposed approaches can improve the speed of convolution computation by 20%-30%, compared with state-of-the-art existing works.

关键词： Convolution Graphics processing units Training Computational modeling Filtering algorithms Kernel Digital filters

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