检索结果-南通市图书馆

维普期刊数据库

Toward reverse engineering on secret S-boxes in block ciphers

在线全文

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2014年第3期57卷 169-186页

作者： TANG Ming QIU ZhenLong PENG HongBo HU XiaoBo YI Mu ZHANG HuanGuo School of Computer Science Wuhan University State Key Lab. of AIS & TC Ministry of EducationWuhan University

It has been widely accepted that the security cryptosystems should be only dependent on the security of their secret ***,there are still secret ciphers with unknown components in their commercial applications due to various *** existing reverse engineering analyzes are developed for analyzing specific ciphers,and cannot cope with secret algorithms with diferent *** looking into the common characteristics of the secret algorithms of ciphers implemented with unknown S-boxes,we proposed a novel reverse engineering analysis approach referred to as Signed Reverse Engineering based on Diferential Power Analysis(SREDPA).It is a generic reverse engineering analysis and can recover the parameters of the secret S-boxes of the block ciphers in typical structures such as SPN,Feistel,and XFeistel(eXtended Feistel).By identifying the bias of the diferential power analysis(DPA)traces,we build the theoretical model of SREDPA and prove its *** are performed on secret algorithms in diferent structures and further validate our SREDPA *** complexity of SREDPA only relies on the size of S-boxes and the reverse engineering analysis is *** shown in the theoretical analysis and the conducted experiments,our SREDPA approach is readily to be extended for analyzing other secret ciphers with unknown *** renders a new challenge on the design and implementation of secret ciphers.

关键词： SCA DPA SPEDPA cryptanalysis block ciphers S-boxes

Further Analysis of block ciphers against Timing Attacks

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Wuhan University Journal of Natural Sciences 2006年第6期11卷 1629-1632页

作者： LI Wei GU Dawu School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University Shanghai 200030 China State Key Laboratory of Modern Communications Chengdu 610041 Sichuan China

Timing attacks break a cryptosystem by time measurement to recover keys. Most available countermeasures protect block ciphers based on the safety of modules. This paper gives a complete definition of timing attacks and studies the vulnerability of operations and modules on timing attacks. We present a method to transfer the security of the algorithm to that of secure operations by reduction. As a result, we hopefully tend to reconcile the provable security notions and modem cryptography with real-world implementations of block ciphers.

关键词： timing attacks block ciphers reduction

维普期刊数据库

Two-dimensional-lag complex logistic map with complex parameters and its encryption application

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2024年第5期33卷 324-335页

作者：张芳芳武金波寇磊马凤英吴黎明张雪 School of Information and Automation Engineering Qilu University of Technology (Shandong Academy of Sciences)Jinan 250353China Institute of Oceanographic Instrumentation Qilu University of Technology (Shandong Academy of Sciences)Qingdao 266000China

With the rapid development of internet technology,security protection of information has become more and more prominent,especially information *** the great advantages of chaotic encryption,we propose a 2D-lag complex logistic map with complex parameters(2D-LCLMCP)and corresponding encryption ***,we present the model of the 2D-LCLMCP and analyze its chaotic properties and system stability through fixed points,Lyapunov exponent,bifurcation diagram,phase diagram,***,a block cipher algorithm based on the 2D-LCLMCP is proposed,the plaintext data is preprocessed using a pseudorandom sequence generated by the *** on the generalized Feistel cipher structure,a round function F is constructed using dynamic S-box and DNA encoding rules as the core of the block cipher *** generalized Feistel cipher structure consists of two F functions,four XOR operations,and one permutation operation per *** symmetric dynamic round keys that change with the plaintext are generated by the ***,experimental simulation and performance analysis tests are *** results show that the block cipher algorithm has low complexit,good diffusion and a large key *** the block length is 64 bits,only six rounds of encryption are required to provide sufficient security and robustness against cryptographic attacks.

关键词： logistic map block ciphers chaotic system encryption

维普期刊数据库

RBFK cipher:a randomized butterfly architecture‑based lightweight block cipher for IoT devices in the edge computing environment

在线全文

学校读者我要写书评

暂无评论

网络空间安全科学与技术(英文) 2023年第3期6卷 18-36页

作者： Sohel Rana M.Rubaiyat Hossain Mondal Joarder Kamruzzaman Institute of Information and Communication Technology Bangladesh University of Engineering and TechnologyDhakaBangladesh Centre for Smart Analytics Federation University AustraliaGippslandVIC 3842Australia

Internet security has become a major concern with the growing use of the Internet of Things(IoT)and edge computing *** though data processing is handled by the edge server,sensitive data is generated and stored by the IoT devices,which are subject to *** most IoT devices have limited resources,standard security algorithms such as AES,DES,and RSA hamper their ability to run *** this paper,a lightweight symmetric key cipher termed randomized butterfly architecture of fast Fourier transform for key(RBFK)cipher is proposed for resource-constrained IoT devices in the edge computing *** butterfly architecture is used in the key scheduling system to produce strong round keys for five rounds of the encryption *** RBFK cipher has two key sizes:64 and 128 bits,with a block size of 64 *** RBFK ciphers have a larger avalanche effect due to the butterfly architecture ensuring strong *** proposed cipher satisfies the Shannon characteristics of confusion and *** memory usage and execution cycle of the RBFK cipher are assessed using the fair evaluation of the lightweight cryptographic systems(FELICS)*** proposed ciphers were also implemented using MATLAB 2021a to test key sensitivity by analyzing the histogram,correlation graph,and entropy of encrypted and decrypted *** the RBFK ciphers with minimal computational complexity provide better security than recently proposed competing ciphers,these are suitable for IoT devices in an edge computing environment.

关键词： Avalanche effects block ciphers Butterfly architecture Edge computing FELICS IoT Lightweight cryptosystems MATLAB