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Anonymous Password Authentication Scheme by Using Digital Signature and Fingerprint in Cloud computing

Anonymous Password Authentication Scheme by Using Digital Si...

引用

International Conference on Cloud and Green computing (CGC)

作者： Ali A. Yassin Hai Jin Ayad Ibrahim Deqing Zou Cluster and Grid Computing Laboratory Services Computing Technology and System Laboratory School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China

Cloud security represents a main hindrance that causes to retard its widespread adoption. Authentication considers a significance element of security in cloud environment, aiming to verify a user's identity when a user wishes to request services from cloud. There are many authentication schemes that depend on username/password, but they are considered weak techniques of cloud authentication. A more secure scheme is the two-factor authentication that does not only verify the username/password pair, but also needs a second factor such as a token device, biometric. However, the feasibility of second-factor authentication is limited by the deployment complexity, high cost and the cloud security is compromised when the token is missing or purloined. Furthermore, these schemes are failed to resist well-known attacks such as replay attacks, reflection attacks. This paper proposes two-factor authentication scheme based on Schnorr digital signature and feature extraction from fingerprint to overcome above aforementioned issues. Security analysis and experimental results illustrate that our proposed scheme can withstand the common security attacks as well, and has a good performance of password authentication.

关键词： Authentication Servers Feature extraction Cryptography Digital signatures Cloud computing

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FTDS: Adjusting Virtual computing Resources in Threshing Cases

FTDS: Adjusting Virtual Computing Resources in Threshing Cas...

引用

Euromicro Conference on Parallel, Distributed and Network-Based Processing

作者： Jian Huang Hai Jin Kan Hu Zhiyuan Shao Services Computing Technology and System Laboratory Cluster and Grid Computing Laboratory School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China

In a virtual execution environment, dynamic computing resource adjustment technique, configuring the computing resource of virtual machines automatically according to the actual loads generated by applications, is often adopted in virtual machine monitor to improve the resource utilization rate. Traditionally, the simple Additive Increase Subtractive Decrease (AISD) scheme is used as an adjusting rule. However, in some special situations, for example, compiling kernel in a virtual machine, the configuration of virtual machines may change abruptly because of the violent vibration of workload during a short interval, and the threshing can inevitably result in additional overhead under AISD rule. In this paper, we extend the Proportional-Integral-Derivative (PID) algorithm and present a feedback control model for configuring virtual computing resources, and propose an innovative adjusting scheme called Forecasting and Time Delayed Subtraction (FTDS) to reduce the overhead caused by threshing. The FTDS uses both statistic history of resource requests and current utilization of computing resource to predict whether threshing happens and to determine how many and when to adjust the amount of virtual CPUs. Experimental results show that FTDS can effectively reduce the jitter occurred in adjusting and make the performance penalty for threshing decreased from 9% to 0.3% compared with AISD, while maintaining that in non-threshing cases the same as AISD.

关键词： Virtual machining Virtual machine monitors Resource management Kernel Three-term control Feedback control Predictive models Delay effects Statistics History

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Measurement Study of PKTown: A P2P-Based Multiplayer Online Game Supporting system

Measurement Study of PKTown: A P2P-Based Multiplayer Online ...

引用

International Symposium on Parallel Architectures, Algorithms and Programming (PAAP)

作者： Xuping Tu Hai Jin Wenbin Jiang Xiaofei Liao Services Computing Technology and System Laboratory Cluster and Grid Computing Laboratory School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China

Multiplayer Online Game has been extremely popular, in which peer-to-peer technology has been introduced to help with the scaling. This paper presents a measurement study on a P2P-based MOG supporting system, called PKTown, which has been fully deployed over the CERNET. By leveraging a large set of traces obtained recently over a 4-month period, we study the benefit of P2P architecture applying to MOG supporting system, workload characteristics, players' behaviors and impact form a number of system parameters. We believe this provides insights in understanding the fundamental nature of MOG, which can be further explored to enhance the system design.

关键词： Games Servers Relays Correlation Bandwidth Peer to peer computing Computer architecture

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LCM: A lightweight communication mechanism in HPC cloud

LCM: A lightweight communication mechanism in HPC cloud

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International Conference on Pervasive computing and Applications (ICPCA)

作者： Haibao Chen Song Wu Xuanhua Shi Hai Jin Yu Fu Services Computing Technology and System Laboratory Cluster and Grid Computing Laboratory School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China

ISBN: (纸本)9781457702099

Inspired by the concept of cloud computing, the construction of HPC Cloud with traditional HPC resources not only provides new opportunities to address the challenges to the traditional HPC, but also brings many exciting research problems. One of them is how to reduce the network overhead of virtual cluster in HPC cloud. In order to resolve the problem, this paper presents the design and implementation of lightweight communication mechanism for virtual cluster in HPC Cloud, called LCM, which maintains binary compatibility for applications written in standard socket interface. We implemented our design on Xen 3.2 with Linux kernel 2.6.18, and evaluated the speed of file transfer, the running time of NAS Parallel benchmark and binary compatibility using binary image of real socket applications. In our tests, we have proved that LCM realizes the high performance that is comparable to UNIX domain socket and ensures full binary compatibility.

关键词： IP networks Program processors Educational institutions

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VolunteerLive: Introducing Volunteer Nodes into P2P Live Streaming

VolunteerLive: Introducing Volunteer Nodes into P2P Live Str...

引用

International Conference on Intelligent Pervasive computing (IPC)

作者： Xuping Tu Hai Jin Xiaofei Liao Qi Huang Hong Yao Services Computing Technology and System Laboratory Cluster and Grid Computing Laboratory School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China

ISBN: (纸本)9780769530062;0739530060

In P2P live streaming system, service will be degraded when thousands of semi-riders, peers with very limited outbound bandwidth, concurrently join. Due to the limited outbound bandwidth, a semi-rider peer always gets more data than its contributions. In this paper, we propose VolunteerLive, an incentive-based P2P live streaming model, to address this issue. In VolunteerLive, these asymmetrical users are encouraged to "deposit" their bandwidth resources to relay data using their network bandwidth resources. They can enjoy the services as semi-riders in the future. We also propose ContriMax, a heuristics data scheduling algorithm designed for volunteers to collect and maximize the contributions of them. Simulations have been conducted to evaluate the performance of the proposed VolunteerLive and ContriMax. The results show that VolunteerLive model is feasible to support more semi-riders and greatly decrease the stress on the media server.

关键词： Bandwidth Peer to peer computing Scheduling algorithm Streaming media Algorithm design and analysis Pervasive computing Grid computing Computer science Degradation Relays

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An Approach to Use Cluster-Wide Free Memory in Virtual Environment

An Approach to Use Cluster-Wide Free Memory in Virtual Envir...

引用

ChinaGrid Annual Conference (ChinaGrid)

作者： Like Zhou Song Wu Xuanhua Shi Hai Jin Services Computing Technology and System Laboratory Cluster and Grid Computing Laboratory School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China

Memory and I/O intensive applications always use a huge amount of memory and the performance decreases quickly when memory pressure arises. With the development of high performance network and widely used in cluster, the latency of remote memory access is much less than that of disk operation. In this paper, we present an approach to let the VM (Virtual Machine) use cluster-wide free memory, which can overcome the limitation of physical memory by exploiting low-latency access to the memory of other nodes in cluster. This approach can reduce the execution time for memory and I/O intensive applications significantly by utilizing cluster-wide memory and increase the whole cluster utilization.

关键词： Memory management Random access memory Operating systems Virtual machine monitors Servers Programming

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Service Guarantee for Inter-domain Movement in Wireless Peer-to-Peer Live Streaming system

Service Guarantee for Inter-domain Movement in Wireless Peer...

引用

International Symposium on Parallel Architectures, Algorithms and Networks (ISPAN)

作者： Wenbin Jiang Haixiang Li Hai Jin Xiaofei Liao Services Computing Technology and System Laboratory Cluster and Grid Computing Laboratory School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China

When extending peer-to-peer live streaming system to IEEE 802.11-based wireless network, service guarantee for inter-domain movement is an obstacle since IEEE 802.11 has no QoS maintenance mechanism for it. The stream system must consider it itself. As a peer roams among adjacent networks, the streaming service will be interrupted by the disconnection of wireless network path and IP address changes. Here, a service guarantee mechanism is presented for the QoS of the wireless peer-to-peer living streaming while peer inter-domain roaming. A behavior prediction method based on wireless signal, a pre-caching strategy based on location, and a temp-storing strategy based on ability, are proposed to help the wireless peer rapidly resuming the topology and data transfer. The experiment results show that it can achieve good buffering for wireless roaming peers, which makes uninterrupted stream playing on mobile devices finally, when they roam among different domains.

关键词： Peer to peer computing Wireless LAN Switches Wireless networks Roaming Personal digital assistants Bandwidth Telecommunication network topology Clustering algorithms Computers

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Agent-Based Data Loading Method in MedImGrid

Agent-Based Data Loading Method in MedImGrid

引用

International Conference on New Trends in Information and Service Science, NISS

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

Agent-based grid data loading method aims at integrating heterogeneous hospitalspsila information systems into a medical information exchange platform based on grid middleware. It collects distributed data sets for decision support system, which makes data sources expanded from independent database modes to medical information systems in wide area. Virtual data access with grid service improves data security and makes data modification in local system more flexible. HL7 protocol and middleware are utilized to transform HL7 data into various local data structures for keeping the independence of each hospital information system and providing more convenience and expansibility for various medical applications.

关键词： Information systems Middleware Decision support systems Distributed databases Medical information systems Data security Access protocols Data structures Hospitals Medical services

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MT-BTRIMER: A Master-Slave Multi-threaded Dynamic Binary Translator

MT-BTRIMER: A Master-Slave Multi-threaded Dynamic Binary Tra...

引用

Japan-China Joint Workshop on Frontier of Computer Science and technology (FCST)

作者： Xuping Tu Hai Jin Zhibin Yu Jie Chen Yabin Hu Services Computing Technology and System Laboratory Cluster and Grid Computing Laboratory School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China

Most of the current dynamic binary translation (DBT) systems are single-threaded and many orders of magnitude slower than native execution. Although multi-core processors are becoming more and more prevalent, the single-threaded architecture prevents these DBT systems from improving their performance by making full use of the parallel execution advantage. In this paper, we present the design and implementation of a multi-threaded DBT system, named MT-BTRIMER. MT-BTRIMER employs a master-slave multi-threaded architecture. We evaluate the MT-BTRIMER system across SPEC CINT 2000 and BYTEmark test suite. The results demonstrate that MT-BTRIMER can speculatively translate on average 60% of useful target code, and reduce the total runtime by nearly 30% compared with ST-BTRIMER which is a single-threaded DBT system.

关键词： Instruction sets Message systems Runtime Benchmark testing Scalability Context Synchronization

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The Theory of Triangle Type-2 Fuzzy Sets

The Theory of Triangle Type-2 Fuzzy Sets

引用

International Conference on Computer and Information technology (CIT)

作者： Zehua Lv Hai Jin Pingpeng Yuan Services Computing Technology and System Laboratory Cluster and Grid Computing Laboratory School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China

Interval type-2 fuzzy set is the most popular kind of type-2 fuzzy set, its characteristic is that all the secondary membership functions equal to 1. Though interval type-2 fuzzy sets can reduce the calculation complexity than other type-2 fuzzy sets, it loses much fuzzy information simultaneously. In order to solve this problem we propose a novel theory of triangle type-2 fuzzy sets, the formulas for union, intersection and complement of triangle type-2 fuzzy sets are derived and proven in detail. In addition, the relationship and the conversion between triangle type-2 fuzzy sets and interval type-2 fuzzy sets are discussed.

关键词： Fuzzy sets Fuzzy set theory Uncertainty Grid computing Fuzzy systems Gaussian distribution Frequency selective surfaces Information technology Computer science Artificial intelligence

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