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International Conference on Computational Intelligence and security

作者： Zuowen Tan Key Laboratory of Network Security and Cryptology School of Mathematics and Computer Science Fujian Normal University Fuzhou Fujian China School of Information Technology Jiangxi University of Finance and Economics Nanchang Jiangxi China

ISBN: (纸本)9781424454112

In a group signature scheme, a group member signs messages anonymously on behalf of the group. However, in the case of a dispute, the actual group signer's identity can be revealed by a designated entity. In this paper, we propose a new identity-based group signature scheme using bilinear maps. The group signature scheme is well suited for large groups, i. e., the length of the group' s public key and the length of signatures are independent on the size of the group. Our signature scheme is based on bilinear maps. Furthermore, a group member can sign many messages using the same key pair. Cryptanalysis shows that the proposed group signature scheme is secure under the computational Diffie Hellman problem called CDHP assumption. And it is also more efficient than previous ones satisfying these requirements.

关键词： Identity-based encryption Public key Public key cryptography Information security Elliptic curve cryptography Computational intelligence Information technology Finance Computer security Mathematics

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A security-Enhanced Remote Platform Integrity Attestation Scheme

A Security-Enhanced Remote Platform Integrity Attestation Sc...

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International Conference on Wireless Communications, networking and Mobile computing (WiCom)

作者： Song Cheng Liu Bing Xin Yang Yang Yixian Zhongxian Li Yin Han Key Laboratory of network and information attack & defence technology of MOE Beijing University of Posts and Telecommunications Beijing China National Engineering Laboratory for Disaster Backup and Recovery Beijing China National Cybernet Security Ltd Beijing China Huawei Technology Ltd Beijing China

Remote platform integrity attestation is a method by which a client attests its hardware and software configuration to a remote server. The goal of remote integrity platform attestation is to enable a remote challenger to determine the level of trust in the integrity of another attestator's platform configuration. However, the existing integrity reporting protocol is vulnerable to man-in-the-middle(MITM) attacks. In this paper, we describe this kind of attacks against protocols for remote platform integrity attestation, and propose a security-enhanced remote platform integrity attestation scheme for preventing man-in-the middle attacks.

关键词： Protocols Information security Laboratories Cryptography Hardware Protection Privacy Telecommunication switching Computer security National security

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An improved algorithm for IP alias resolution in network topology measurement

An improved algorithm for IP alias resolution in network top...

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9th International Conference on Electronic Measurement and Instruments, ICEMI 2009

作者： Yong, Zhang Shize, Guo Kangfeng, Zheng Yixian, Yang Key Laboratory of Network and Information Attack and Defence Technology of MOE Beijing University of Posts and Telecommunications Beijing 100876 China National Engineering Laboratory for Disaster Backup and Recovery Beijing University of Posts and Telecommunications Beijing 100876 China Information Security Center State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing 100876 China

ISBN: (纸本)9781424438624

Internet topology measurement is an important part of network measurement. Nowadays, traceroute probing method is widely used to obtain the original route data, and the IP alias resolution technique is to identify IP addresses belonging to the same router for constructing accurate Internet maps. However, there are thousands of IP addresses only in a region topology exploration, while current alias resolution technique has limited effectiveness. So we need to apply a new approach to refine the collected path traces before IP alias resolution which is called Alias Filter (AF). In this paper we propose an improved algorithm called RAF which based on rules set according to experiences for dealing with the path data. The performance analysis proves the algorithm has low cost and high efficiency. ©2009 IEEE.

关键词： network topology

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D-S Evidence Theory Based Digital Image Trustworthiness Evaluation Model

D-S Evidence Theory Based Digital Image Trustworthiness Eval...

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International Conference on Multimedia Information networking and security (MINES)

作者： Donghui Hu Lina Wang Yu Zhou Yang Zhou Xiaqiu Jiang Longfei Ma School of Computer Science and Information Hefei University of Technology Hefei China School of Computer Science Wuhan University of China Wuhan Hubei China The Key Laboratory of Aerospace Information Security and Trust Computing Ministry of Education Wuhan Hubei China

Digital images are facing trustworthy crisis with the emergence of various digital image process tools and steganography tools. Current digital image forensic methods can not evaluate the digital image's trustworthiness. Base on Dempster-Shafer (D-S) evidence theory, this paper proposed a new model which can effectively evaluate digital image trustworthiness. Instead of using Dempster's original rule of combination, we use feature fusion method to resolve the problem of evidence conflict. Experimental results show that the new proposed model not only can evaluate digital image trustworthiness effectively, but also resolve some problems which puzzling current digital image forensic technology.

关键词： Digital images Forensics Watermarking Information security Computer science Steganography Uncertainty Multimedia computing Computer security Educational technology

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Robust Perceptual Image Hash Using Gabor Filters

Robust Perceptual Image Hash Using Gabor Filters

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International Conference on Multimedia Information networking and security (MINES)

作者： Lina Wang Xiaqiu Jiang Donghui Hu Dengpan Ye Shiguo Lian School of Computer Science Wuhan University of China Wuhan China The Key Laboratory of Aerospace Information Security and Trust Computing Ministry of Education Wuhan China School of Computer Science and Information Hefei University of Technology Hefei China HCI Laboratory France Telecom Research and Development Center (Beijing) Beijing China

In order to design the image hash from human being's view, we capture the perceptual characters of the image using Gabor filter which can sense the directions in the image just like human's primary visual cortex. For a given image, we compute the reference scale, direction and block to make sure the final hash can resist against RST (Rotation, Scale, Translation) attacks while maintain the sensitivity to local malicious manipulations. In addition, it has another promising ability to locate the tampered image blocks, approximately determined tamper methods (delete, add, modify) and the original direction of each block. The ability is very useful in forensics. The experimental results show that the strategy of the reference metrics works quite well and it is much more effective than the other state of art image hash method.

关键词： Robustness Gabor filters Humans Resists Image coding Information security Computer science Telecommunication computing Filtering Feature extraction

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Fuzzy analytic hierarchy process-based utilities evaluation and adoption for DRM security policies

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Tongxin Xuebao/Journal on Communications 2009年第1 A期30卷 126-131页

作者： Zhang, Zhi-Yong Ye, Chuan-Qi Fan, Ke-Feng Zhang, Li-Li Niu, Dan-Mei Electronics Information Engineering College Henan University of Science and Technology Luoyang 471003 China Ministry of Education Key Laboratory of Computer Network and Information Security Xidian University Xi'an 710071 China Information Security Center for the State Key Laboratory of Network and Exchange Beijing Post and Telecom University Beijing 100158 China

The utility evaluation of DRM security policies based on fuzzy analytic hierarchy process (FAHP) and their game-theoretic adoptions were proposed from a novel perspective of the different level security and utilities' analyses. Based on the analytic hierarchy structure, the fuzzy estimation consistency matrix was employed to analyze the weights of optional security components and services, and then the gained weight values were further used for the computing of security policies' utilities and the accomplishing the game, finally yielding Nash equilibriums, that is, optimal policies profiles, as well as pre-conditions for participants. The use case for a group of the typical security policies shows that the result of the game includes two different groups of security policies profiles, as well as contents/services provider could effectively deploy a DRM system in term of the number of consumers purchasing digital contents, and average purchase, thus achieving the balance between the digital copyrights protection and real payoffs of participants.

关键词： Game theory

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Detection of drive-by downloads based on dynamic page views

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Qinghua Daxue Xuebao/Journal of Tsinghua University 2009年第SUPPL. 2期49卷 2126-2132页

作者： Zhang, Huilin Zhuge, Jianwei Song, Chengyu Han, Xinhui Zou, Wei Institute of Computer Science and Technology Peking University Beijing 100871 China Key Laboratory of Network and Software Security Assurance of Ministry of Education Peking University Beijing 100871 China

A dynamic page view based drive-by download detection method was developed to address the challenge hidden drive-by downloads which abuse inline linking dynamics creation and obfuscation. The method uses a script engine to execute page scripts with tools to reveal the script's actions and inline linking identification mechanisms and rebuilds the dynamic page view of the visited page by recursively analyzing the inline pages. The system then detects drive-by downloads based on the rebuilt dynamic page view. Tests on a prototype based on the open-sourced PHoneyC framework to detect 89 drive-by download samples showed that single page views in this paper had a detection rate of 29.2%, static page views had a detection rate of 43.8%, and the dynamic page views had a detection rate of 70.8%. Thus, the dynamic detection method has a much higher detection rate.

关键词： network security

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Dynamic evolution model of short message complex network

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Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University 2009年第6期43卷 5-9页

作者： Sun, Qindong Sun, Yahong Guan, Xiaohong Wang, Qian School of Computer Science and Engineering Xi'an University of Technology Xi'an 710048 China MOE Key Laboratory for Intelligent and Network Security Xi'an Jiaotong University Xi'an 710049 China

The law of SMS (short message service) network growth is analyzed to understand the evolution of SMS communication network, and the deficiencies of existing complex network models that are used to describe real SMS network are pointed out. Then, a new dynamic evolution model is proposed. The model considers both the network node removing and the inner and outer growth of the network, so that the dynamic evolution of a true network can be described in more detail. Experimental results show that the proposed model describes the growth of SMS network desirably, and the model can more objectively simulate and depict the features and evolution of the SMS complex network.

关键词： Complex networks

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Cryptanalysis of a Type of CRT-Based RSA Algorithms

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Journal of Computer Science & technology 2008年第2期23卷 214-221页

作者：秦宝东李明孔凡玉 College of Computer Science and Technology Southwest University of Science and TechnologyMianyang 621010China Institute of Network Security Shandong UniversityJinan 250100China Key Laboratory of Cryptographic Technology and Information SecurityJinan 250100China

It is well known that the Chinese Remainder Theorem （CRT） can greatly improve the performances of RSA cryptosystem in both running times and memory requirements. However, if the implementation of CRT-based RSA is careless, an attacker can reveal some secret information by exploiting hardware fault cryptanalysis. In this paper, we present some fault attacks on a type of CRT-RSA algorithms namely BOS type schemes including the original BOS scheme proposed by Blomer, Otto, and Seifert at CCS 2003 and its modified scheme proposed by Liu et al. at DASC 2006. We first demonstrate that if some special signed messages such as m = 0, ±1 are dealt carelessly, they can be exploited by an adversary to completely break the security of both the BOS scheme and Liu et al.＇s scheme. Then we present a new permanent fault attack on the BOS scheme with a success probability about 25%. Lastly, we propose a polynomial time attack on Liu et al.＇s CRT-RSA algorithm, which combines physical fault injection and lattice reduction techniques when the public exponent is short.

关键词： Chinese remainder theorem RSA BOS scheme cryptanalysis fault attack LLL

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security and trust in digital rights management: A survey

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International Journal of network security 2009年第3期9卷 247-263页

作者： Zhang, Zhiyong Pei, Qingqi Ma, Jianfeng Yang, Lin Ministry Of Education Key Laboratory of Computer Network and Information Security Xidian University Taibai South Road No.2 Xi'an Shannxi 710071 China Electronic Information Engineering College Henan University of Science and Technology Xiyuan Road No.48 Luoyang Henan 471003 China The Research Institute China Electronic Equipment and Systems Engineering Corporation Dacheng Road 13 Beijing 100141 China

A successful transaction of digital contents is primarily dependent on security policies, trust relationships and benefit equilibriums among various participants in a DRM (Digital Rights Management)-enabling contents value chain ecosystem. We first analyzed basic value chain architectures in existence, together with some fundamental security and trust requirements. And then, a state-of- the-art anatomy of the security and trust related to DRM was presented from different stakeholder' perspectives. Next, some challenges for multi-party mutual trust, not just inclined to any of participants, were proposed based on the holistic consideration of the digital contents/rights protection and the benefits balance. Finally, a conclusion was drawn that the rights-benefits-centric DRM ecosystem and the resulting trust relationship are crucial for the survivability of the contents industry.

关键词： Ecosystems

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