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On the construction of multi-output Boolean functions with optimal algebraic immunity

science china(Information sciences) 2012年第7期55卷 1617-1623页

作者： zhang jie 1,2 ,song shouchao 1 ,DU Jiao 2,{3.,{3.,beijing 100876,china 2 State Key Laboratory of Networking and Switching Technology,{3.,beijing 100876,china 3.Department of Mathematics,Xinxiang university,Xinxiang 453.03.china 1. school of science Beijing University of Posts and Telecommunications Beijing 100876 China2. State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications Beijing 100876 China3. Department of Mathematics Xinxiang University Xinxiang 453003 China

In this paper,we show a construction of multi-output Boolean functions with optimal algebraic ***,the relationship between the algebraic immunity of a multi-output Boolean function and those of its component functions is *** show that all the component functions,together with their nonzero linear combination,of the multi-output Boolean functions achieved by this construction have optimal algebraic immunity simultaneously.

关键词： algebraic immunity Boolean functions algebraic attacks annihilators

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AN IDENTITY-BASED PERSONAL LOCATION SYSTEM WITH PROTECTED PRIVACY IN IOT

AN IDENTITY-BASED PERSONAL LOCATION SYSTEM WITH PROTECTED PR...

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2011 4th IEEE International Conference on Broadband Network and Multimedia Technology

作者： Chunye Hu 1 jie zhang 1 qiaoyan {3. 2 1 school of {3. beijing university of posts and telecommunications beijing 100876 china 2 State Key Laboratory of Networking and Switching Technology beijing university of posts and telecommunications beijing 100876 china

The internet of things（IOT）has the same security requirements as traditional network,but according to the characteristics of its own,the internet of things also has some specific security features. Among these features,the flexibility of the network requires nodes to apply corresponding measures when scene *** example,in emergency situations（*** accident occurs,and a doctor is needed）,the location of the user is available,while under normal circumstances,the user’s location information is *** paper is in the background of the above scene to present an identity based system for personal location in emergency *** proposed system consists of registration subsystem,user authentication subsystem,policy subsystem and client *** system confirms the identity of the user through the user authentication subsystem and gets the level of the emergency through the policy *** it can make sure that user’s location information can be accessed only by some authorized user,and only when *** proposed system strengthens the protection of the user’s privacy while providing the location of the user,and prevents the disclosure of the users’information.

关键词： emergency situations virtual identity internet of things(IOT) privacy security

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Algebraic immunities of vector-valued functions over finite fields

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The Journal of china Universities of posts and telecommunications 2015年第5期22卷 16-21页

作者： Liu Zhenhua zhang jie wen {3. Computer science department China Women's University school of science Beijing University of Posts and Telecommunications State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications

Algebraic immunity is an important cryptographic property of Boolean functions. The notion of algebraic immunity of Boolean functions has been generalized in several ways to vector-valued functions over arbitrary finite fields. In this paper, the results of Ref. [25] are generalized to arbitrary finite fields. We obtain vector-valued functions over arbitrary finite fields such that their algebraic immunities can reach the upper bounds. Furthermore, all the component functions, together with their some nonzero linear combinations, of vector-valued Boolean functions achieved by this construction have optimal algebraic immunities simultaneously.

关键词： cryptography Boolean functions algebraic immunity

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Data embedding based on pixel value differencing and modulus function using indeterminate equation

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The Journal of china Universities of posts and telecommunications 2015年第1期22卷 95-100页

作者： Wang Zhao zhang jie Liao Xin wen {3. school of science Beijing University of Posts and Telecommunications College of Computer science and Electronic Engineering Hunan University State Key Laboratory of Networking and Switching Technology Beijing University of Posts and Telecommunications

An effective data hiding method based on pixel value differencing （PVD） and modulus function （MF） PVD （MF-PVD） was proposed. MF-PVD method was derived by Wang et al in which the MF was employed to adjust the remainder of two pixels for data embedding and extraction. In the proposed method, a new remainder function in a more general form is defined by selecting proper parameters, in which an indeterminate equation is constructed and an optimal solution is applied to revise the pixels. This strategy leads to a significant image distortion reduction compared with the original method. The experiment reveals that, by preserving the original embedding capacity, the method provides better embedding efficiency than both MF-PVD and PVD methods.

关键词： pixel value differencing modulus function indeterminate equation data embedding

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