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Multi-user access control scheme based on resources hierarchies for perceptual layer of IoT

Tien Tzu Hsueh Pao/Acta Electronica Sinica 2014年第1期42卷 28-35页

作者： Ma, Jun Guo, Yuan-Bo Ma, Jian-Feng Liu, Xi-Meng Li, Qi School of Computer Science and Technology Xidian University Xi'an Shaanxi 710071 China PLA Information Engineering University Zhengzhou Henan 450004 China Shaanxi Key Laboratory of Network and System Security Xidian University Xi'an Shaanxi 710071 China

A novel hierarchical access control scheme for perceptual layer of the IoT is presented based on resources hierarchies, which could conform to the secure and efficient access requirement of multi-user. In the scheme, every hierarchical node is composed of perceptual nodes which provide resources with the same levels of security. More hierarchical nodes can be modeled as a set of partially ordered classes. With this mode, a deterministic key derivation algorithm is designed, which makes every user and perceptual node possesses a single key material to get some keys, and obtains the resources at the presented class and all descendant classes in the hierarchy. Furthermore, a mechanism of Merkle tree is introduced to guarantee secure and efficient multi-user key material derivation by independent of each hash link. Compared with previous proposals, the scheme is more suitable for multi-user to access resources of perceptual layer in IoT.

关键词： Access control

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MF-PDP: Multi-function provable data possession scheme in cloud computing

MF-PDP: Multi-function provable data possession scheme in cl...

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IEEE International Conference on Cloud computing and Intelligence Systems (CCIS)

作者： Xiaojun Yu Qiaoyan Wen State key laboratory of networking and switching technology Beijing University of Posts and Telecommunications Beijing China Beijing Topsec Network Security Technology Co. Ltd. Beijing China

ISBN: (纸本)9781467369541

This paper proposed a multi-function provable data possession (MF-PDP), which supports public verification, data dynamic, unlimited times verification and sampling verification. The detail design is provided and the theory analysis about the correctness, security and performance are also described. The experiment emulation and compare analysis suggest the feasibility and advantage.

关键词： Cloud computing Multi-function Provable data possession Cloud computing Verification

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An adaptively secure multi-authority ciphertext-policy ABE scheme on prime order groups

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Tien Tzu Hsueh Pao/Acta Electronica Sinica 2014年第4期42卷 696-702页

作者： Li, Qi Ma, Jian-Feng Xiong, Jin-Bo Liu, Xi-Meng Ma, Jun School of Computer Science and Technology Xidian University Xi'an Shaanxi 710071 China School of Telecommunication Engineering Xidian University Xi'an Shaanxi 710071 China Shaanxi Key Laboratory of Network and System Security Xidian University Xi'an Shaanxi 710071 China

Previous adaptively secure multi-authority attribute-based encryption (ABE) schemes suffered from superfluous computation overhead on composite order groups. To tackle this problem, an adaptively secure multi-authority ciphertext-policy ABE (MA-CP-ABE) scheme on prime order groups was proposed when a dual pairing vector space approach was employed. The proposed scheme supports any monotone access structure, and is proven adaptively secure from the decisional linear assumption in the standard model. Performance analysis indicates that our scheme is more efficient while achieving the adaptive security.

关键词： Vector spaces

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How does four-dimensional CT spare normal tissues in non-small cell lung cancer radiotherapy by defining internal target volume?

How does four-dimensional CT spare normal tissues in non-sma...

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第八届中国肿瘤学术大会暨第十三届海峡两岸肿瘤学术会议

作者： Tong Bai Jian Zhu Yong Yin Jie Lu Huazhong Shu Lin Wang Bo Yang Department of Radiation Physics Shandong Cancer Hospital and Institute Laboratory of Image Science and Technology Southeast University Shandong Provincial Key Laboratory of Network based Intelligent Computing University of Jinan

Purpose To investigate how does the four-dimensional CT(4DCT)technique spare normal tissues in non-small cell lung cancer(NSCLC)radiotherapy by defining individualized internal target volume(ITV).Methods GTV and CTV w... 详细信息

关键词： NSCLC PTV How does four-dimensional CT spare normal tissues in non-small cell lung cancer radiotherapy by defining internal target volume

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Implementation and test of human-operated and human-like adaptive impedance controls on Baxter robot

Implementation and test of human-operated and human-like ada...

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15th Annual Conference on Advances in Autonomous Robotics Systems, TAROS 2014

作者： Liang, Peidong Yang, Chenguang Wang, Ning Li, Zhijun Li, Ruifeng Burdet, Etienne Centre for Robotics and Neural Systems School of Computing and Mathematics Plymouth University United Kingdom MOE Key Lab. of Autonomous System and Network Control College of Automation Science and Engineering South China University of Technology China State Key Laboratory of Robotics and System Harbin Institute of Technology China Department of Computer Science and Engineering Chinese University of Hong Kong Hong Kong Department of Bioengineering Imperial College of Science Technology and Medicine London United Kingdom

ISBN: (纸本)9783319104003

This paper presents an improved method to teleoperate impedance of a robot based on surface electromyography (EMG) and test it experimentally. Based on a linear mapping between EMG amplitude and stiffness, an incremental stiffness extraction method is developed, which uses instantaneous amplitude identified from EMG in a high frequency band, compensating for non-linear residual error in the linear mapping and preventing muscle fatigue from affecting the control. Experiments on one joint of the Baxter robot are carried out to test the approach in a disturbance attenuation task, and to compare it with automatic human-like impedance adaptation. The experimental results demonstrate that the new human operated impedance method is successful at attenuating disturbance, and results similarly to as automatic disturbance attenuation, thus demonstrating its efficiency. © 2014 Springer International Publishing.

关键词： Stiffness

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Package of the vector math library based on the sunway processor

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Ruan Jian Xue Bao/Journal of Software 2014年 25卷 70-79页

作者： Xie, Qing-Chun Zhang, Yun-Quan Li, Yan Pang, Ren-Bo Wu, Zai-Long Lu, Yong-Quan Gao, Peng-Dong High Performance Computing Center Communication University of China Beijing100024 China Laboratory of Parallel Computing Institute of Software The Chinese Academy of Sciences Beijing100190 China State Key Laboratory of Computer Architecture Institute of Computing Technology The Chinese Academy of Sciences Beijing100190 China Department of Computer and Network National Marine Environmental Forecasting Center Beijing100081 China School of Information Sceience and Technology The Ocean University of China Qingdao266100 China

This paper first introduces the SIMD (single instruction multiple data) extension technology and presents three ways to use SIMD instructions. It is considered that calling the third party library, which is optimized for the target platform by using those instructions, is the best way to benefit the developers. Next, it introduces the China-developed SW-1600 CPU, and a software package called SW-VML, which consists of many mathematical functions, by using the SIMD extension technology. In order to solve the additional overhead caused by unaligned address access and transformation between vector and scalar array, the paper provides some performance optimized methods, such as aligned address access, simplifying vector condition branch and loop unrolling. An upgrade to SW-VML is also offered to support multi-thread with OpenMP. Finally, functions in the package are tested using arrays of different sizes on SW-1600, and the test results show that high performance is achieved with the technology of the SIMD vectorization. Compared with the traditional methods of the scalar calculation, the average speedup is up to 2.06. The performance speedup of package using 4 threads is up to 2.26 compared to using a single thread. SW-VML is a common vector function package for domestic Sunway processor series, and it can be used as a basic toolkit which is beneficial to high performance computing on Sunway platform. ©2014 ISCAS.

关键词： Vectors

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Steganalysis and improvement of a quantum steganography protocol via a GHZ_4 state

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Chinese Physics B 2013年第6期22卷 199-202页

作者：徐淑奖陈秀波钮心忻杨义先 Information Security Center State Key Laboratory of Networking and Switching TechnologyBeijing University of Posts and Telecommunications Shandong Provincial Key Laboratory of Computer Network Shandong Computer Science Center State Key Laboratory of Information Security (Institute of Information EngineeringChinese Academy of Sciences)

Quantum steganography that utilizes the quantum mechanical effect to achieve the purpose of information hiding is a popular topic of quantum information. Recently, E1 Allati et al. proposed a new quantum steganography using the GHZ4 state. Since all of the 8 groups of unitary transformations used in the secret message encoding rule change the GHZ4 state into 6 instead of 8 different quantum states when the global phase is not considered, we point out that a 2-bit instead of a 3-bit secret message can be encoded by one group of the given unitary transformations. To encode a 3-bit secret message by performing a group of unitary transformations on the GHZ4 state, we give another 8 groups of unitary transformations that can change the GHZ4 state into 8 different quantum states. Due to the symmetry of the GHZ4 state, all the possible 16 groups of unitary transformations change the GHZ4 state into 8 different quantum states, so the improved protocol achieves a high efficiency.

关键词： quantum steganography GHZ4 entangled state quantum cryptography quantum communication

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Detecting Compromised VM via Application-Aware Anomaly Detection

Detecting Compromised VM via Application-Aware Anomaly Detec...

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International Conference on Computational Intelligence and security

作者： Kai Luo Shouzhong Tu Chunhe Xia Dan Zhou Beijing Key Laboratory of Network Technology Beihang University Beijing China Beijing Institute of Electronic Technology & Application Beijing China The Institute of Computing Technology University of the Chinese Academy of Sciences Beijing China

ISBN: (纸本)9781479974351

Nowadays, the Infrastructure as a Service (IaaS) cloud has become the new target of attackers and the security of virtual machine (VM) in cloud is attracting more and more attention. In this paper, we propose to use virtualization to combine information of system level with that of network level and monitor the behavior of VM at the granularity of process. Based on Xen hypervisor, we implement this approach and develop APPLICATION-AWARE ANOMALY DETECTION SYSTEM (AADS) to detect anomalous behavior in VM. Experimental results show that our correlated approach performs better than that use features from only system level or network level.

关键词： Monitoring Feature extraction Malware Virtual machining Training Ports (Computers)

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Approach to keyword search over encrypted data in cloud

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Tongxin Xuebao/Journal on Communications 2014年 35卷 147-153页

作者： Zhang, Peng Li, Yan Lin, Hai-Lun Yang, Rong Liu, Qing-Yun Institute of Information Engineering Chinese Academy of Sciences Beijing100093 China National Engineering Laboratory for Information Security Technologies Beijing100093 China National Computer Network Emergency Response and Coordination Center Beijing100029 China Institute of Computing Technology Chinese Academy of Sciences Beijing100190 China

With the advent of cloud computing, large-scale data are being increasingly outsourced to the cloud. For the protection of data privacy, sensitive data has to be encrypted before outsourcing, which makes effective data utilization a very challenging task. Although traditional searchable encryption approaches allow users to search over encrypted data through keywords, they don't capture any relevance of data files, so users have to spend much time on post-processing every retrieved file in order to find ones most matching their interest. Moreover, retrieving all files containing the queried keyword further incurs unnecessary network traffic, which is not accord with pay-as-you-use cloud paradigm. An approach to ranked keyword search over encrypted data in cloud is proposed. Ranked search greatly mitigate the user's effort by returning the matching files in a ranked order, and also protects the data privacy by order-preserving encryption. Extensive experimental results demonstrate the efficiency. ©, 2014, Editorial Board of Journal on Communications. All right reserved.

关键词： Cloud computing

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A random walk evolution model of wireless sensor networks and virus spreading

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Chinese Physics B 2013年第1期22卷 154-160页

作者：王亚奇杨晓元 Network and Information Security Key Laboratory of the Armed Police Force Department of Electronics Technology Engineering University of the Chinese People's Armed Police Force

In this paper, considering both cluster heads and sensor nodes, we propose a novel evolving a network model based on a random walk to study the fault tolerance decrease of wireless sensor networks （WSNs） due to node failure, and discuss the spreading dynamic behavior of viruses in the evolution model. A theoretical analysis shows that the WSN generated by such an evolution model not only has a strong fault tolerance, but also can dynamically balance the energy loss of the entire network. It is also found that although the increase of the density of cluster heads in the network reduces the network efficiency, it can effectively inhibit the spread of viruses. In addition, the heterogeneity of the network improves the network efficiency and enhances the virus prevalence. We confirm all the theoretical results with sufficient numerical simulations.

关键词： wireless sensor network random walk network efficiency virus spreading

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