检索结果-内蒙古大学图书馆

Preventing“Bad”Content Dispersal in Named Data Networking

China Communications 2018年第6期15卷 109-119页

作者： Yi Wang Zhuyun Qi Bin Liu Southern University of Science and Technology Shenzhen 518055China Peking University Shenzhen 518055China Tsinghua University Beijing 100084China

Named Data Networking(NDN)improves the data delivery efficiency by caching contents in routers. To prevent corrupted and faked contents be spread in the network,NDN routers should verify the digital signature of each published content. Since the verification scheme in NDN applies the asymmetric encryption algorithm to sign contents,the content verification overhead is too high to satisfy wire-speed packet forwarding. In this paper, we propose two schemes to improve the verification performance of NDN routers to prevent content poisoning. The first content verification scheme, called "user-assisted",leads to the best performance, but can be bypassed if the clients and the content producer collude. A second scheme, named ``RouterCooperation ‘', prevents the aforementioned collusion attack by making edge routers verify the contents independently without the assistance of users and the core routers no longer verify the contents. The Router-Cooperation verification scheme reduces the computing complexity of cryptographic operation by replacing the asymmetric encryption algorithm with symmetric encryption *** simulation results demonstrate that this Router-Cooperation scheme can speed up18.85 times of the original content verification scheme with merely extra 80 Bytes transmission overhead.

关键词： named data networking router content verification encryption algorithm

来源：评论

学校读者我要写书评

暂无评论

Research on reversible image steganography of encrypted image based on image interpolation and difference histogram shift

引用

IET IMAGE PROCESSING 2022年第7期16卷 1959-1972页

作者： Ye, Hanmin Su, Keqin Cheng, Xiaohui Huang, Shiming Guilin Univ Technol Sch Informat Sci & Engn Guilin 541000 Guangxi Peoples R China

In view of the mutual restriction between the image encryption and information hiding process in the ciphertext domain reversible algorithm, the existing ciphertext domain image reversible image steganography algorithm can hardly take into account the performance of security and hiding capacity. This paper proposes a reversible image steganography algorithm for encrypted images based on a new interpolation image and difference histogram shift. The pixel position of the carrier image is changed through the double scrambling operation of random image block recombination and Arnold transform. The chaotic sequence generated by logistic mapping is used as the diffusion sequence of the encryption algorithm, and DNA encoding and calculation are performed respectively to obtain the final encrypted image. According to the newly proposed interpolation algorithm, the encrypted image is enlarged, determine the pixel value of the target interpolated image according to the pixel value of the encrypted image, calculate the difference between the three adjacent pixel values of the target interpolated image, and use the difference histogram translation algorithm to convert the secret Information is embedded in an interpolated image, and only one bit of the pixel value can be modified in a single embedding process, and the embedding method is simple and effective. Experimental results show that under the premise of ensuring information security and image quality, the embedding capacity has also been greatly improved, reaching 1,572,864 bits. When the embedding rate is 0.67 bpp, the PSNR can also reach 58 dB and the image quality is maintained better.

关键词： interpolation transforms image encryption information security image interpolation ciphertext domain reversible algorithm pixel value adjacent pixel values DNA image sequences image quality reversible image steganography steganography encryption algorithm final encrypted image single embedding process carrier image DNA encoding target interpolated image difference histogram shift mutual restriction information hiding process cryptography histogram translation algorithm image coding diffusion sequence random image block recombination interpolation image ciphertext domain image Arnold transform double scrambling operation interpolation algorithm chaotic sequence logistic mapping

来源：评论

学校读者我要写书评

暂无评论

An AES crypto chip using a high-speed parallel pipelined architecture

引用

MICROPROCESSORS AND MICROSYSTEMS 2005年第7期29卷 317-326页

作者： Yoo, SM Kotturi, D Pan, DW Blizzard, J Univ Alabama Dept Elect & Comp Engn Huntsville AL 35899 USA Cadence Design Syst Inc Plano TX USA

The number of Internet and wireless communications users has rapidly grown and that increases demand for security measures to protect user data transmitted over open channels. In December 200 1, the National Institute of Standards and Technology (NIST) of the United States chose the Rijndael algorithm as the suitable Advanced encryption Standard (AES) to replace the Data encryption Standard (DES) algorithm. Since then, many hardware implementations have been proposed in literature. We present a hardware-efficient design increasing throughput for the AES algorithm using a high-speed parallel pipelined architecture. By using an efficient inter-round and intra-round pipeline design, our implementation achieves a high throughput of 29.77 Gbps in encryption whereas the highest throughput reported in literature is 21.54 Gbps. (C) 2005 Elsevier B.V. All rights reserved.

关键词： encryption algorithm hardware implementation parallel pipelined design throughput

来源：评论

学校读者我要写书评

暂无评论

A new access control method based on multi-authority in cloud storage service

引用

INTERNATIONAL JOURNAL OF COMPUTATIONAL INTELLIGENCE SYSTEMS 2018年第1期11卷 483-495页

作者： Luo, Sheng Liu, Qiang South China Univ Technol Sch Econ & Commerce Guangzhou 510006 Guangdong Peoples R China Southwestern Univ Sch Comp Chongqing 400715 Peoples R China

With the arrival of the era of big data, data has become a kind of important assets. In order to get a better utilization of big data, paid or unpaid data sharing will be a trend. And as one of key techniques to maintain security of data sharing, access control will play an important role in cloud storage services. This paper proposes an access control method for revocation of user rights in cloud storage services. Revoking user rights includes two aspects: revoking users and revoking attributes. The model presented in this paper is composed of attribute authority (AA), data owner (DO), user and cloud server. The key components of each part are generated by AA and DO, thus avoiding the joint attack between the user and AA. Then, the security of the scheme is analyzed by using Decisional Bilinear Diffie-Hellman (DBDH) theory. Experiments show that the scheme can effectively revoke user rights. Compared with other schemes, the proposed scheme has higher efficiency in terms of computation cost and communication cost. The research results have certain theoretical and practical significance.

关键词： Revoke rights Cloud storage server encryption algorithm Access control

来源：评论

学校读者我要写书评

暂无评论

High-Security Sequence Design for Differential Frequency Hopping Systems

引用

IEEE SYSTEMS JOURNAL 2021年第4期15卷 4895-4906页

作者： Chen, Rui Shi, Jia Yang, Lie-Liang Li, Zan Guan, Lei Xidian Univ Sch Telecommun Engn State Key Lab Integrated Serv Networks Xian 710071 Peoples R China Univ Southampton Sch Elect & Comp Sci Southampton SO17 1BJ Hants England

Differential frequency hopping (DFH) technique is widely used in wireless communications by exploiting its capabilities of mitigating tracking interference and confidentiality. However, electronic attacks in wireless systems become more and more rigorous, which imposes a lot of challenges on the DFH sequences designed based on the linear congruence theory, fuzzy and chaotic theory, etc. In this article, we investigate the sequence design in DFH systems by exploiting the equivalence principle between the G-function algorithm and the encryption algorithm, in order to achieve high security. In more details, first, the novel G-function is proposed with the aid of the Government Standard algorithm and the Rivest-Shamir-Adleman algorithm. Then, two sequence design algorithms are proposed, namely, the G-function-assisted sequence generation algorithm, which takes the full advantages of the symmetric and asymmetric encryption algorithms, and the high-order G-function-aided sequence generation algorithm, which is capable of enhancing the correlation of the elements in a DFH sequence. Moreover, the security and ergodicity performance of the proposed algorithms are analyzed. Our studies and results show that the DFH sequences generated by the proposed algorithms significantly outperform the sequences generated by the reversible hash algorithm and affine transformation in terms of the uniformity, randomness, complexity, and the security.

关键词： Receivers Transmitters encryption Wireless communication Public key Complexity differential frequency hopping (DFH) encryption algorithm G-function hybrid encryption security

来源：评论

学校读者我要写书评

暂无评论

Time Estimation for a New Block Generation in Blockchain-Enabled Internet of Things

引用

IEEE TRANSACTIONS ON NETWORK AND SERVICE MANAGEMENT 2024年第1期21卷 535-557页

作者： Halgamuge, Malka N. Munasinghe, Geetha K. Zukerman, Moshe RMIT Univ Dept Informat Syst & Business Analyt Melbourne Vic 3000 Australia Sine Grp Pty Ltd Adelaide SA 5000 Australia City Univ Hong Kong Dept Elect Engn Hong Kong Peoples R China

The Internet of Things (IoT) has emerged with Distributed Ledger Technology (DLT) to address existing scalability challenges and improve the trustworthiness of machine-to-machine communication. Among the numerous potential benefits of combining IoT and DLT, Blockchain, a subset of DLT, is a crucial enabler to accelerate secure IoT adoption. Appending a new block to a blockchain, especially in a blockchain-based IoT ecosystem, requires more delay than expected. This delay is one of several issues limiting the broader adoption of blockchain within the IoT domain. To assess this delay, we develop a new comprehensive model to estimate the time required to generate a new block in a blockchain-enabled IoT system. To this end, we develop sub-computation models and compare time consumption associated with the block generation process by conducting an extensive analysis of the following selected IoT layers: device layer, cluster head layer, fog/edge layer, and cloud layer. Our study identifies potential time-consuming steps in adding a new block to a network. Our results demonstrate that the type of blockchain framework and data encryption algorithms could affect the block generation time and that Avalanche, Conflux, Algorand, Polkadot Hyperledger Fabric outperforms Ethereum in terms of block generation time in IoT networks. On the other hand, the blockchain framework does not play a significant role in block generation time for smaller data packets. We also observed the benefit of using 256-bit ECC (elliptic curve cryptography) encryption and the fog layer in IoT networks to enhance the scalability of the block generation process. All in all, our results indicate that the total block generation time varies depending on the selected IoT framework, data encryption algorithm, blockchain type, and key functions of the layers. However, we found that time delays associated with queuing or block size are negligible relative to the other key components of block generation time.

关键词： Blockchains Internet of Things Distributed ledger encryption Computational modeling Security Fabrics Blockchain distributed ledger technology (DLT) new block Internet of Things (IoT) fog computing cloud computing encryption algorithm computation time

来源：评论

学校读者我要写书评

暂无评论

Automated statistical methods for measuring the strength of block ciphers

引用

STATISTICS AND COMPUTING 1997年第2期7卷 125-135页

作者： Gustafson, HM Dawson, EP Golic, JD QUEENSLAND UNIV TECHNOL SCH MATH FAC SCI BRISBANE QLD 4001 AUSTRALIA QUEENSLAND UNIV TECHNOL INFORMAT SECUR RES CTR FAC INFORMAT TECHNOL BRISBANE QLD 4001 AUSTRALIA

A block cipher is one of the most common forms of algorithms used for data encryption. This paper describes an efficient set of statistical methods for analysing the security of these algorithms under the black-box approach. The procedures can be fully automated, which provides the designer or user of a block cipher with a useful set of tools for security analysis.

关键词： encryption algorithm block cipher stream cipher black-box analysis statistical tests

来源：评论

学校读者我要写书评

暂无评论

A Secure Subscription-Push Service Scheme Based on Biockchain and Edge Computing for IoT

引用

KSII TRANSACTIONS ON INTERNET AND INFORMATION SYSTEMS 2022年第2期16卷 445-466页

作者： Deng, Yinjuan Wang, Shangping Zhang, Qian Zhang, Duo Xian Univ Technol Shool Automat & Informat Engn Xian 710054 Peoples R China Baoji Univ Arts & Sci Sch Math & Informat Sci Baoji 721013 Peoples R China Xian Univ Technol Shool Sci Xian Peoples R China Xian Univ Technol Shool Comp Sci & Engn Xian Peoples R China

As everything linking to the internet, people can subscribe to various services from a service provider to facilitate their lives through the Internet of Things (IoT). An obligatory thing for the service provider is that they should push the service data safely and timely to multiple IoT terminal devices regularly after the IoT devices accomplishing the service subscription. In order to control the service message received by the legal devices as while as keep the confidentiality of the data, the public key encryption algorithm is utilized. While the existing public encryption algorithms for push service are too complicated for IoT devices, and almost of the current subscription schemes based on push mode are relying on centralized organization which may suffer from centralized entity corruption or single point of failure. To address these issues, we design a secure subscription-push service scheme based on blockchain and edge computing in this article, which is decentralized with secure architecture for the subscription and push of service. Furthermore, inspired by broadcast encryption and multicast encryption, a new encryption algorithm is designed to manage the permissions of IoT devices together with smart contract, and to protect the confidentiality of push messages, which is suitable for IoT devices. The edge computing nodes, in the new system architecture, maintain the blockchain to ensure the impartiality and traceability of service subscriptions and push messages, meanwhile undertake some calculations for IoT devices with limited computing power. The legalities of subscription services are guaranteed by verifying subscription tags on the smart contract. Lastly, the analysis indicates that the scheme is reliable, and the proposed encryption algorithm is safe and efficient.

关键词： Blockchain Edge Computing encryption algorithm Internet of Things Devices Subscription-Push Service

来源：评论

学校读者我要写书评

暂无评论

HIDDEN ASSUMPTIONS IN CRYPTOGRAPHIC PROTOCOLS

引用

IEE PROCEEDINGS-E COMPUTERS AND DIGITAL TECHNIQUES 1990年第6期137卷 433-436页

作者： BOYD, C Electrical Engineering Laboratories Comunications Research Group University of Manchester Manchester UK

It is shown that some well known cryptographic protocols for authentication are insecure if the underlying cryptographic algorithm does not avoid certain special features. Explicit assumptions based on the fundamental properties of cryptographic transformations are recommended as a basis for cryptographic protocol design. It is shown how these properties may be used to design alternative forms of the protocols analysed.

关键词： encryption algorithm cryptographic protocols Authentication

来源：评论

学校读者我要写书评

暂无评论

Lightweight Trust Management Scheme Based on Blockchain in Resource-Constrained Intelligent IoT Systems

引用

IEEE INTERNET OF THINGS JOURNAL 2024年第15期11卷 25706-25719页

作者： Deng, Min Lyu, Yuanlin Yang, Chunmeng Xu, Fang Ahmed, Manzoor Yang, Na Xu, Ze Ke, Can Hubei Engn Univ Sch Comp & Informat Sci Xiaogan 432000 Peoples R China Hubei Engn Univ Artificial Intelligence Ind Technol Res Inst Xiaogan 432000 Peoples R China Hubei Univ Sch Comp Sci & Informat Engn Wuhan 430062 Peoples R China Hubei Engn Univ AI Ind Technol Res Inst Xiaogan 432000 Peoples R China

In order to realize an intelligent Internet of Things (IoT) system, various resource-constrained IoT devices today play an important role in data transmission and processing. However, the novel data protection requirements appear since constrained resources like computation power or energy of IoT devices cannot support classic data protection methods like encryption algorithms. To tackle the above issues, we propose a lightweight blockchain-based trust management (BBTM) scheme in Resource-constrained Intelligent IoT Systems. The BBTM initially establishes a genesis block at the onset of network operation. Messages transmitted between nodes are recorded as transactions, forming blocks that are linked to the blockchain. As the network operates, nodes' behaviors are monitored, and their trust values are updated in real-time. When two nodes encounter each other, a credibility formula-based method is used to determine trustworthiness based on historical behaviors. Nodes that pass the trust verification utilize asymmetric encryption for message transmission. The primary aim of this scheme is to develop a lightweight, blockchain-based secure communication module for Intelligent IoT Systems. It encrypts information using asymmetric cryptography and manages trust during node interactions to ensure security and privacy by blocking malicious or selfish nodes. Compared with the existing solutions, the simulation results show that this scheme can effectively block the attacks from malicious nodes without overly consuming network resources. At the same time, trust verification and encrypted information transmission are effectively managed in resource-constrained intelligent IoT systems.

关键词： Internet of Things Trust management Security Blockchains encryption Performance evaluation Smart cities Blockchain consensus mechanism encryption algorithm intelligent Internet of Things (IoT) smart contract trust management

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：