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A Review of Existing 4-Bit Crypto S-Box Cryptanalysis Techniques and Two New Techniques with 4-Bit Boolean Functions for Cryptanalysis of 4-Bit Crypto S-Boxes

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Advances in Pure Mathematics 2018年第3期8卷 272-306页

作者： Sankhanil Dey Ranjan Ghosh Institute of Radio Physics and Electronics University of Calcutta Kolkata India

4-bit linear relations play an important role in cryptanalysis of 4-bit crypto S-boxes. 4-bit finite differences have also been a major part of cryptanalysis of 4-bit S-boxes. Existence of all 4-bit linear relations have been counted for all of 16 input and 16 output 4-bit bit patterns of 4-bit Crypto S-boxes said as S-boxes has been reported in Linear Cryptanalysis of 4-bit S-boxes. Count of existing finite differences from each element of output S-boxes to distant output S-boxes have been noted in Differential Cryptanalysis of S-boxes. In this paper a brief review of these two cryptanalytic methods for 4-bit S-boxes has been introduced in a very lucid and conceptual manner. Two new analysis techniques, one to search for the existing linear approximations among the input vectors (IPVs) and output Boolean functions (BFs) of a particular S-box has also been introduced in this paper. The search is limited to find the existing linear relations or approximations in the contrary to count the number of existent linear relations among all 16, 4-bit input and output bit patterns within all possible linear approximations. Another is to find number of balanced BFs in difference output S-boxes. Better the number of Balanced BFs, Better the security.

关键词： Linear Cryptanalysis Differential Cryptanalysis Substitution Boxes S-Boxes cryptography Cryptanalysis

A New Proxy Signature Scheme with Message Recovery Using Self-Certified Public Key

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A New Proxy Signature Scheme with Message Recovery Using Sel...

The 1st Chinese Conference on Trusted Computing and Information Security

作者： LI Ji-guo. ZHANG Yi-chen. ZHU Yue-long College of Computer and Information Engineering, Hohai University, Nanjing 210098, Jiangsu, China

＜正＞ A proxy signature scheme with message recovery using self-certified public key is proposed. which withstands public key substitution attacks, active attacks, and forgery attacks. The proposed scheme accomplishes the tasks of public key verification, proxy signature verification, and message recovery in a logically single step. In addition, the proposed scheme satisfies all properties of strong proxy signature and does not use secure channel in the communication between the original signer and the proxy signature signer.

关键词： cryptography proxy signature self-certified public key non-repudiation

A New （t, n） Threshold Signature Scheme Withstanding the Conspiracy Attack

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A New （t, n） Threshold Signature Scheme Withstanding the C...

The 1st Chinese Conference on Trusted Computing and Information Security

作者： XIE Qi, YU Xiu-yuan Department of Mathematics,Zhejiang University. Hangzhou 310027. Zhejiang,China: School of Information and Engineering, Hangzhou Teachers College. Hangzhou ,310012. Zhejiang, China Hangzhou Teachers College, Hangzhou 310012, Zhejiang, China

＜正＞ A conspiracy attack is proposed to show that Wang-Li’s scheme is insecure, because any t or more group members can impersonate other t members to sign any message without holding the responsibility. To avoid t... 详细信息

关键词： cryptography threshold signature conspiracy attack identifier tracing

An FPGA Implementation of GF（p） Elliptic Curve Cryptographic Coprocessor

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An FPGA Implementation of GF（p） Elliptic Curve Cryptograph...

The 1st Chinese Conference on Trusted Computing and Information Security

作者： LIU Yu-zhen ,QIN Zhong-ping, ZHANG Huan-guo School of Computer, Wuhan University, Wuhan 430072, Hubei, China School of Software, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China

＜正＞ A GF（p） elliptic curve cryptographic coprocessor is proposed and implemented on Field Programmable Gate Array （FPGA）. The focus of the coprocessor is on the most critical, complicated and time-consuming point multiplications. The technique of coordinates conversion and fast multiplication algorithm of two large integers are utilized to avoid frequent inversions and to accelerate the field multiplications used in point multiplications. The characteristic of hardware parallelism is considered in the implementation of point multiplications. The coprocessor implemented on XILINX XC2V3000 computes a point multiplication for an arbitrary point on a curve defined over GF（2192-264-1） with the frequency of 10 MHz in 4. 40 ms in the average case and 5. 74 ms in the worst case. At the same circumstance, the coprocessor implemented on XILINX XC2V4000 takes 2. 2 ms in the average case and 2. 88 ms in the worst case.

关键词： elliptic curve cryptosystems cryptographic coprocessor cryptography information security

HiMAC: Hierarchical Message Authentication Code for Secure Data Dissemination in Mobile Ad Hoc Networks

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International Journal of Communications, Network and System Sciences 2017年第12期10卷 299-326页

作者： Khaleel Mershad Ali Hamie Mohamad Hamze Department of Computer and Communications Engineering Faculty of Engineering Arts Sciences and Technology University in Lebanon (AUL) Beirut Lebanon

Mobile ad-hoc networks are wireless self-organized networks in which mobile nodes can connect directly to each other. This fact makes such networks highly susceptible to security risks and threats, as malicious nodes can easily disguise as new trusted nodes and start attacking the network after a certain period of time. Hence, the security of data transmission in MANET has been a hot topic in the past years. Several research works attempted to detect and stop various attacks on MANET nodes and packets. This paper presents an efficient mechanism for secure data dissemination in MANETs. Our approach is based on the identity based cryptography and Message Authentication Code (MAC). The proposed security mechanism prevents malicious nodes from tampering or replaying intermediate packets by means of signing and encrypting the packet at each intermediate trusted node. We tested the efficiency of our system using the ns2 simulator by comparing it to a similar security mechanism. The simulations illustrate that our approach obtains many advantages over other existing approaches for secure data dissemination in MANETs.

关键词： MANET Security ID Based cryptography MAC Protocol Hierarchical Security Trust Mechanism cryptography Analysis NS2

An Algebraic Proof of the Associative Law of Elliptic Curves

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Advances in Pure Mathematics 2017年第12期7卷 649-659页

作者： Kazuyuki Fujii Hiroshi Oike International College of Arts and Sciences Yokohama City University Yokohama Japan Takado Yamagata Japan

In this paper we revisit the addition of elliptic curves and give an algebraic proof to the associative law by use of MATHEMATICA. The existing proofs of the associative law are rather complicated and hard to understand for beginners. An ‘‘elementary” proof to it based on algebra has not been given as far as we know. Undergraduates or non-experts can master the addition of elliptic curves through this paper. After mastering it they should challenge the elliptic curve cryptography.

关键词： Elliptic Curve Addition Associative Law MATHEMATICA Elliptic Curve cryptography

Security Analysis of Secret Image Sharing

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国际计算机前沿大会会议论文集 2017年第1期 75-78页

作者： Xuehu Yan Yuliang Lu Lintao Liu Song Wan Wanmeng Ding Hanlin Liu Hefei Electronic Engineering Institute Hefei 230037China

Differently from pure data encryption,secret image sharing(SIS)mainly focuses on image protection through generating a secret image into n shadow images(shares)distributed to n associated participants.The secret image can be reconstructed by collecting sufficient shadow images.In recent years,many SIS schemes are proposed,among which Shamir’s polynomial-based SIS scheme and visual secret sharing(VSS)also called visual cryptography scheme(VCS)are the primary branches.However,as the basic research issues,the security analysis and security level classification of SIS are rarely discussed.In this paper,based on the study of image feature and typical SIS schemes,four security levels are classified as well as the security of typical SIS schemes are analyzed.Furthermore,experiments are conducted to evaluate the efficiency of our analysis by employing illustrations and evaluation metrics.

关键词： Secret image sharing Shamir’s polynomial-based secret image sharing Visual cryptography Security analysis Linear congruence

Authenticated Privacy Preserving Pairing-Based Scheme for Remote Health Monitoring Systems

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Journal of Information Security 2017年第1期8卷 75-90页

作者： Kambombo Mtonga Eun Jun Yoon Hyun Sung Kim Mathematical Sciences Department University of Malawi-Chancellor College Zomba Malawi Department of Cyber Security Kyungil University Daegu South Korea

The digitization of patient health information has brought many benefits and challenges for both the patients and physicians. However, security and privacy preservation have remained important challenges for remote health monitoring systems. Since a patient’s health information is sensitive and the communication channel (i.e. the Internet) is insecure, it is important to protect them against unauthorized entities. Otherwise, failure to do so will not only lead to compromise of a patient’s privacy, but will also put his/her life at risk. How to provide for confidentiality, patient anonymity and un-traceability, access control to a patient’s health information and even key exchange between a patient and her physician are critical issues that need to be addressed if a wider adoption of remote health monitoring systems is to be realized. This paper proposes an authenticated privacy preserving pairing-based scheme for remote health monitoring systems. The scheme is based on the concepts of bilinear paring, identity-based cryptography and non-interactive identity-based key agreement protocol. The scheme also incorporates an efficient batch signature verification scheme to reduce computation cost during multiple simultaneous signature verifications.

关键词： Remote Healthcare Bilinear Pairing Privacy Preservation Mutual Authentication ID-Based cryptography

Security and Privacy-Preserving Metering Service in the Smart Grid

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International Journal of Communications, Network and System Sciences 2017年第8期10卷 307-315页

作者： Zhongwei Sun Chuqi Song School of Electrical and Electronic Engineering North China Electric Power University Beijing China

The deployment of smart metering provides an immense amount of data for power grid operators and energy providers. By using this data, a more efficient and flexible power grid can be realized. However, this data also raises privacy concerns since it contains very sensitive information about customers. In this paper, we present a security and privacy-preserving metering scheme for the community customers, by utilizing the password authenticated key exchange (PAKE) protocol and Elliptic Curve Cryptosystem (ECC). The proposed scheme will protect the community network from possible malicious behavior, and security analysis is also given in the paper.

关键词： Community Password Authentication Elliptic Curve cryptography (ECC) Privacy