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基于SHA-256和Arnold映射的量子Logistic映射图像加密算法 被引量:6
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作者 杨宇光 王嘉伟 《安徽大学学报(自然科学版)》 CAS 北大核心 2024年第1期35-42,共8页
在AI和5G时代,各种应用层出不穷,带宽增加和算力提升为众多信息系统的高密集交互提供了基础保障,但同时安全问题日益突显.图像在多媒体通信中有重要作用,且许多图片涉及个人隐私或国家机密,因此图像保护尤为重要.为了解决上述问题,提出... 在AI和5G时代,各种应用层出不穷,带宽增加和算力提升为众多信息系统的高密集交互提供了基础保障,但同时安全问题日益突显.图像在多媒体通信中有重要作用,且许多图片涉及个人隐私或国家机密,因此图像保护尤为重要.为了解决上述问题,提出基于SHA-256和Arnold映射的量子Logistic映射图像加密算法.实验结果表明:该文算法的解密图像与明文图像基本一致;该文算法具有较强的密钥敏感性;相对于其他算法,该文算法具有更强的抵抗统计攻击能力.因此,该文算法具有较强的加密性能. 展开更多
关键词 图像加密 加密算法 sha-256 ARNOLD映射 量子Logistic映射
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A Novel Pipelining Encryption Hardware System with High Throughput and High Integration for 5G
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作者 Yuntao Liu Zesheng Shen +1 位作者 Shuo Fang Yun Wang 《China Communications》 SCIE CSCD 2022年第6期1-10,共10页
This paper presents a ZUC-256 stream cipher algorithm hardware system in order to prevent the advanced security threats for 5 G wireless network.The main innovation of the hardware system is that a six-stage pipeline ... This paper presents a ZUC-256 stream cipher algorithm hardware system in order to prevent the advanced security threats for 5 G wireless network.The main innovation of the hardware system is that a six-stage pipeline scheme comprised of initialization and work stage is employed to enhance the solving speed of the critical logical paths.Moreover,the pipeline scheme adopts a novel optimized hardware structure to fast complete the Mod(231-1)calculation.The function of the hardware system has been validated experimentally in detail.The hardware system shows great superiorities.Compared with the same type system in recent literatures,the logic delay reduces by 47%with an additional hardware resources of only 4 multiplexers,the throughput rate reaches 5.26 Gbps and yields at least 45%better performance,the throughput rate per unit area increases 14.8%.The hardware system provides a faster and safer encryption module for the 5G wireless network. 展开更多
关键词 encryption hardware system for 5G ZUC-256 stream cipher algorithm pipeline scheme throughput rate integration rate
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可兼容AES-128、AES-192、AES-256串行AES加密解密电路设计 被引量:6
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作者 韩少男 李晓江 《微电子学与计算机》 CSCD 北大核心 2010年第11期40-45,50,共7页
通过分析AES算法的基本原理,对算法中的AES-128、AES-192、AES-256三种不同的加密解密模式进行了综合设计,有效地利用了公共模块,与单个分别实施各个加密解密模式相比,大大减少了硬件电路面积.针对目前AES实现方法中的key产生模块进行... 通过分析AES算法的基本原理,对算法中的AES-128、AES-192、AES-256三种不同的加密解密模式进行了综合设计,有效地利用了公共模块,与单个分别实施各个加密解密模式相比,大大减少了硬件电路面积.针对目前AES实现方法中的key产生模块进行了理论分析,提出了一种新的实现电路结构.设计出的串行AES硬件加密解密电路经综合后得到的芯片面积为31286门,最高工作频率为66MHz,可以满足目前的大部分无线传感网络的数据交换速率的需求. 展开更多
关键词 AES算法 AES-128 AES-192 AES-256 加密解密 ASIC
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Design and Development of a Novel Symmetric Algorithm for Enhancing Data Security in Cloud Computing
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作者 Mohammad Anwar Hossain Ahsan Ullah +1 位作者 Newaz Ibrahim Khan Md Feroz Alam 《Journal of Information Security》 2019年第4期199-236,共38页
Cloud computing is a kind of computing that depends on shared figuring assets instead of having nearby servers or individual gadgets to deal with applications. Technology is moving to the cloud more and more. It’s no... Cloud computing is a kind of computing that depends on shared figuring assets instead of having nearby servers or individual gadgets to deal with applications. Technology is moving to the cloud more and more. It’s not just a trend, the shift away from ancient package models to package as service has steadily gained momentum over the last ten years. Looking forward, the following decade of cloud computing guarantees significantly more approaches to work from anyplace, utilizing cell phones. Cloud computing focused on better performances, better scalability and resource consumption but it also has some security issue with the data stored in it. The proposed algorithm intents to come with some solutions that will reduce the security threats and ensure far better security to the data stored in cloud. 展开更多
关键词 Data Security Cloud Computing encryption DECRYPTION Secret Key SYMMETRIC algorithm 192 BITS HASHING PERMUTATION sha-512
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EPON系统中的认证与加密机制研究 被引量:3
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作者 王蓉 王慧鑫 +1 位作者 王浩 王立民 《光通信技术》 CSCD 北大核心 2012年第6期17-20,共4页
EPON通信系统采用点对多点通信模式,而这种通信模式使得OLT与ONU通信过程中存在非法接入、窃听、伪造等安全威胁,针对这种情况,提出了一种基于SHA-256散列算法及AES加密算法的认证、密钥更新、加密技术来解决上述安全威胁,并对方案中认... EPON通信系统采用点对多点通信模式,而这种通信模式使得OLT与ONU通信过程中存在非法接入、窃听、伪造等安全威胁,针对这种情况,提出了一种基于SHA-256散列算法及AES加密算法的认证、密钥更新、加密技术来解决上述安全威胁,并对方案中认证、会话密钥生成和密钥更新各阶段进行了详细分析。 展开更多
关键词 EPON 认证 加密 sha-256散列算法 AES算法
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面向区块链溯源的链下扩展存储方案 被引量:5
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作者 张斌 李大鹏 +1 位作者 蒋锐 王小明 《计算机与现代化》 2022年第10期106-112,126,共8页
在基于区块链的供应链管理溯源系统中,由于区块链技术是一种基于分布式的系统,对于区块链中存储的数据所有节点都会进行备份,如果直接把溯源数据存储在链上,这会导致数据占用大量内存,增加溯源系统维护成本和降低系统响应速度的问题。... 在基于区块链的供应链管理溯源系统中,由于区块链技术是一种基于分布式的系统,对于区块链中存储的数据所有节点都会进行备份,如果直接把溯源数据存储在链上,这会导致数据占用大量内存,增加溯源系统维护成本和降低系统响应速度的问题。因此提出一种链下扩展存储方案,该方案首先利用SHA-256哈希算法的单向性对明文数据进行哈希运算得到哈希值,然后采用SM2加密算法产生的私钥对哈希值进行签名,保证信息上传者身份的可靠,最后把哈希值和签名值通过智能合约保存在区块链中,明文数据和其哈希值与签名值在区块链上存储的地址则存储在数据库中。通过结合中心化存储和区块链技术各自的优势,既可以保证溯源数据不可被篡改又可以有效减少区块链网络中溯源数据所占内存的大小。最后,在所提方案的基础上,对溯源系统进行详细设计并采用以太坊区块链平台对其进行实现。 展开更多
关键词 溯源系统 区块链 sha-256哈希算法 SM2加密算法 智能合约
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区块链技术在农业物联网防伪溯源的应用研究 被引量:7
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作者 史恒 雷莹慧 +3 位作者 何正方 资娇艳 陈雪连 郑乔坤 《计算机时代》 2022年第6期32-36,共5页
区块链有着广泛的应用,农业物联网使用的范畴主要在生产过程中的防伪领域。本文利用区块链的非篡改性和可追溯性的特点,构建农产品防伪可追溯体系。传输过程中采用SHA-256算法对信息加密形成信息摘要,使得系统内部的数据具有了抗攻击性... 区块链有着广泛的应用,农业物联网使用的范畴主要在生产过程中的防伪领域。本文利用区块链的非篡改性和可追溯性的特点,构建农产品防伪可追溯体系。传输过程中采用SHA-256算法对信息加密形成信息摘要,使得系统内部的数据具有了抗攻击性和保密性的特点,并结合二维码技术实现可视化,完善生产厂商与消费者之间的信任机制。 展开更多
关键词 区块链 物联网 防伪溯源 sha-256加密算法
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A Novel Parallel Computing Confidentiality Scheme Based on Hindmarsh-Rose Model
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作者 Jawad Ahmad Mimonah Al Qathrady +3 位作者 Mohammed SAlshehri Yazeed Yasin Ghadi Mujeeb Ur Rehman Syed Aziz Shah 《Computers, Materials & Continua》 SCIE EI 2023年第8期1325-1341,共17页
Due to the inherent insecure nature of the Internet,it is crucial to ensure the secure transmission of image data over this network.Additionally,given the limitations of computers,it becomes evenmore important to empl... Due to the inherent insecure nature of the Internet,it is crucial to ensure the secure transmission of image data over this network.Additionally,given the limitations of computers,it becomes evenmore important to employ efficient and fast image encryption techniques.While 1D chaotic maps offer a practical approach to real-time image encryption,their limited flexibility and increased vulnerability restrict their practical application.In this research,we have utilized a 3DHindmarsh-Rosemodel to construct a secure cryptosystem.The randomness of the chaotic map is assessed through standard analysis.The proposed system enhances security by incorporating an increased number of system parameters and a wide range of chaotic parameters,as well as ensuring a uniformdistribution of chaotic signals across the entire value space.Additionally,a fast image encryption technique utilizing the new chaotic system is proposed.The novelty of the approach is confirmed through time complexity analysis.To further strengthen the resistance against cryptanalysis attacks and differential attacks,the SHA-256 algorithm is employed for secure key generation.Experimental results through a number of parameters demonstrate the strong cryptographic performance of the proposed image encryption approach,highlighting its exceptional suitability for secure communication.Moreover,the security of the proposed scheme has been compared with stateof-the-art image encryption schemes,and all comparison metrics indicate the superior performance of the proposed scheme. 展开更多
关键词 Hindmarsh-rose model image encryption sha-256 parallel computing
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Side-Channel Analysis for the Authentication Protocols of CDMA Cellular Networks 被引量:2
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作者 Chi Zhang Jun-Rong Liu +4 位作者 Da-Wu Gu Wei-Jia Wang Xiang-Jun Lu Zheng Guo Hai-Ning Lu 《Journal of Computer Science & Technology》 SCIE EI CSCD 2019年第5期1079-1095,共17页
Time-division multiple access (TDMA) and code-division multiple access (CDMA) are two technologies used in digital cellular networks. The authentication protocols of TDMA networks have been proven to be vulnerable to ... Time-division multiple access (TDMA) and code-division multiple access (CDMA) are two technologies used in digital cellular networks. The authentication protocols of TDMA networks have been proven to be vulnerable to side-channel analysis (SCA), giving rise to a series of powerful SCA-based attacks against unprotected subscriber identity module (SIM) cards. CDMA networks have two authentication protocols, cellular authentication and voice encryption (CAVE) based authentication protocol and authentication and key agreement (AKA) based authentication protocol, which are used in different phases of the networks. However, there has been no SCA attack for these two protocols so far. In this paper, in order to figure out if the authentication protocols of CDMA networks are sufficiently secure against SCA, we investigate the two existing protocols and their cryptographic algorithms. We find the side-channel weaknesses of the two protocols when they are implemented on embedded systems. Based on these weaknesses, we propose specific attack strategies to recover their authentication keys for the two protocols, respectively. We verify our strategies on an 8-bit microcontroller and a real-world SIM card, showing that the authentication keys can be fully recovered within a few minutes with a limited number of power measurements. The successful experiments demonstrate the correctness and the effectiveness of our proposed strategies and prove that the unprotected implementations of the authentication protocols of CDMA networks cannot resist SCA. 展开更多
关键词 AUTHENTICATION protocol cellular AUTHENTICATION and voice encryption (CAVE) CODE-DIVISION multiple access (CDMA) secure hash algorithm 1 (sha-1) side-channel analysis
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