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An rsa-Like Scheme for Multiuser Broadcast Authentication in Wireless Sensor Networks

INTERNATIONAL JOURNAL OF DISTRIBUTED SENSOR NETWORKS 2015年第9期11卷 1-11页

作者： Cheng, Chen-Yang Lin, Iuon-Chang Huang, Shu-Yan Natl Taipei Univ Technol Dept Ind Engn & Management Taipei 106 Taiwan Natl Chung Hsing Univ Dept Management Informat Syst Taichung 402 Taiwan Asia Univ Dept Photon & Commun Engn Taichung 413 Taiwan

For network users roaming in a wireless sensor network (WSN), they can broadcast queries to WSNs to obtain the latest sensed data from sensor nodes using their mobile devices. In such a scenario, each sensor node has to verify the validity of every query sent from users. In this paper, rsa-like public key cryptography is employed to design a mechanism for multiuser broadcast authentication in WSNs. Within the proposed scheme, the use of certificates becomes optional. When users broadcast queries to WSNs, each sensor node can verify every query immediately without buffering any one. As a result, the energy cost for verifying a query by a sensor node is very small. Furthermore, our scheme provides enough scalability and security. The quantitative analyses show that our scheme is efficient in terms of storage and computational overheads.

关键词： rsa algorithm MULTIUSER detection (Telecommunication) COMPUTERS -- Access control WIRELESS sensor networks COMPUTER users CRYPTOGRAPHY

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The design of the mobile phone module information encryption system based on FPGA

The design of the mobile phone module information encryption...

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2015 Fifth International Conference on Instrumentation and Measurement,Computer,Communication and Control (IMCCC2015)(第五届仪器测量、计算机通信与控制国际会议)

作者： Haoran Sun Qun Ding Electronic Engineering College Heilongjiang University Harbin China

ISBN: (纸本)9781467377249

Today's society is more and more tends to the development of information technology and the popularity of mobile phones also makes personal information security issues *** security transmission of mobile phone text messaging is particularly *** article mainly designs a hardware encryption system based on GSM FPGA module and uses rsa public key encryption algorithm and implements the design of SMS encryption *** rsa public encryption algorithm has become the most important password,which making up the rsa encryption algorithm slowly and exerting vital advantage of the large space of rsa algorithm key because of the speediness of hardware encryption,excellent reliability and good *** show that FPGAbased rsa encryption system of this article proposing can guarantee the secure transmission of information and enhance the security of SMS transmission.

关键词： rsa algorithm hardware encryption FPGA

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On Layered-Graph-Model-Based Routing and Spectrum Assignment in Elastic Optical Networks

On Layered-Graph-Model-Based Routing and Spectrum Assignment...

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IEEE Global Communications Conference

作者： Ching-Fang Hsu Yuan-Chih Chang Siou-Ci Sie Department of Computer Science National Cheng Kung University

ISBN: (纸本)9781479959532

The concept of elastic optical network (EON) has been proposed in recent years as a highly spectrum-efficient solution to implement flexible bandwidth channels. Just like the role of routing and wavelength assignment (RWA) problem in traditional wavelength-routed networks, a routing and spectrum assignment (rsa) algorithm deals with the most basic resource management issue in EON. In this work, we use the well-known layered graph model to design two rsa heuristic algorithms named LG-FF and LG-SP. Numerical results show that LG-SP can obtain blocking performance as good as near-optimal solution and meanwhile significantly reduce computational time. It verifies that layered graph model can solve rsa problem more efficiently.

关键词： Routing and spectrum assignment Elastic optical network Layered graph Fiber optic networks Graphical models Network routing quadruple distribution rsa rsa algorithm Spectra computational time elastooptics

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Sprite:Security and Privacy for Cloud Storage

Sprite:Security and Privacy for Cloud Storage

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Int’l Conference on Computer Science, Data Mining & Mechanical Engg. (ICCDMME’2015, Thailand)

作者： Kyaw Thu Win the University of Compute Studies

Some organizations give storage services using cloud computing *** users of such services kept their data at third party *** this case,security and privacy concerns for cloud user data *** order to solve such concerns,this paper describes the security and privacy model for cloud *** cloud user data are encrypted using a public-key cryptosystem and the decryption key is stored at key manager in secure fashion and the key is only accessible between the key users or owner and key manager via key exchange *** this protocol,the cloud user data,both key and data file,are also controlled by access *** cryptographic key and processes are done at client location using agent-based technology and Rivest-Shamir-Adleman(rsa) algorithm.

关键词： Cloud Security Key exchange protocol Policybased access control rsa algorithm

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Hiding a Covert Digital Image by Assembling the rsa Encryption Method and the Binary Encoding Method

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MATHEMATICAL PROBLEMS IN ENGINEERING 2014年第1期2014卷 1-8页

作者： Lin, Kuang Tsan Yeh, Sheng Lih St Johns Univ Dept Mech & Comp Aided Engn New Taipei City 25135 Taiwan Lunghwa Univ Sci & Technol Dept Mech Engn Kueishan 33306 Taoyuan County Taiwan

The Rivest-Shamir-Adleman (rsa) encryption method and the binary encoding method are assembled to form a hybrid hiding method to hide a covert digital image into a dot-matrix holographic image. First, the rsa encryption method is used to transform the covert image to forma rsa encryption data string. Then, all the elements of the rsa encryption data string are transferred into binary data. Finally, the binary data are encoded into the dot-matrix holographic image. The pixels of the dot-matrix holographic image contain seven groups of codes used for reconstructing the covert image. The seven groups of codes are identification codes, covert-image dimension codes, covert-image graylevel codes, pre-rsa bit number codes, rsa key codes, post-rsa bit number codes, and information codes. The reconstructed covert image derived from the dot-matrix holographic image and the original covert image are exactly the same.

关键词： DIGITAL images rsa algorithm HOLOGRAPHY MATRICES DATA encryption (Computer science)

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IMPLEMENTATION OF VEDIC DIVIDER ON rsa CRYPTOSYSTEM

IMPLEMENTATION OF VEDIC DIVIDER ON RSA CRYPTOSYSTEM

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International Conference on Innovations in Information, Embedded and Communication Systems

作者： Jyotirmayee Subudhi C. Karthick Sathyabama University

ISBN: (纸本)9781479968190

rsa cryptosystem is an old and premier public key cryptography, which is used for data security. A divider is one of the key hardware blocks in most applications such as digital signal processing, cryptography and in other logical computations. Low power consumption, high speed and smaller area are some of the most important aspects for designing of any VLSI system. Area and speed are usually incompatible constraints. So good design has to set equilibrium between area and speed. It is also known fact that Divider unit forms an integral part of processor design. Due to this regard, high speed divider architecture becomes the need of the day. This paper deals with the implementation of vedic divider in rsa algorithm instead of conventional divider. Vedic mathematics describes a method called 'Dhvajanka - On the top of flag' which is a generalized formula for Vedic division used in vedic divider. Verilog code is programmed and simulated by Quartus II 9.0. Power dissipation has been reduced. Significant improvement has been observed in terms of area utilization and time delay.

关键词： Restoring Division Vedic Division Dhvajanka Sutra rsa algorithm Verilog

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Efficient FPGA Implementation of rsa Coprocessor Using Scalable Modules

Efficient FPGA Implementation of RSA Coprocessor Using Scala...

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9th International Conference on Future Networks and Communications (FNC)

作者： Abu Al-Haija, Qasem Smadi, Mahmoud Al-Ja'fari, Monther Al-Shua'ibi, Abdullah King Faisal Univ Dept Elect Engn Al Hasa 31982 Saudi Arabia

rsa Cryptosystem is considered the first practicable secure algorithm that can be used to protect information during the communication. The significance of high security and efficient implementations of rsa have formed the base of many cryptographic engineering researches. In fact, the implementation of rsa Cryptosystem is heavily based on modular arithmetic and exponentiation involving large prime numbers. In this paper, we propose an efficient FPGA design and architecture for rsa cryptosystem using ALTERA FPGA Hardware Kit. The proposed design comprises six levels: random two prime numbers, parallel multiplication of the prime numbers and their decremented values, get encryption key, get decryption key, encryption and decryption levels. As the modular multiplication is considered as the heart of rsa computations, Interleaved algorithm was particularly chosen as an efficient solution to speed up the modular multiplication. The experimental part of this work has been synthesized for both ALTERA Cyclone IV EP4CE115F29C7 and VERTIX VII VC707 FPGA kits and resulted in a maximum frequencies of 15.725 MHz, 17.629 MHz respectively. These findings make our design comparable and a good choice for efficient rsa Cryptoprocessor design. The results for the FPGA implementation for EC design using these curves is also proposed in this paper. (C) 2014 Elsevier B.V.

关键词： Public Key Cryptography rsa algorithm FPGA ALTERA Modular Arithmetic

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Secure Energy Efficient Load Balancing Multipath Routing Protocol with Power Management for Wireless Sensor Networks

Secure Energy Efficient Load Balancing Multipath Routing Pro...

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International Conference on Control, Instrumentation, Communication and Computational Technologies (ICCICCT)

作者： Yuvaraju, M. Rani, K. Sheela Sobana Anna Univ Dept IMER Reg Ctr Coimbatore Tamil Nadu India Sri Ramakrishna Inst Technol Dept ECE Coimbatore Tamil Nadu India

ISBN: (纸本)9781479941902

Wired network nodes have direct connection with the power source. But wireless sensor nodes depend on the on-board battery for power. Two different things can be done to increase the operational lifetime of the WSN. First one is efficient energy utilization. Second one is attachment of power generating devices. This paper proceeds with efficient energy utilization by proposing a new multipath routing protocol called tSEL(Secure Energy Efficient Load Balancing Multipath Routing Protocol with Transmission Power Adjustment). Single path routing protocols may lead to holes in the network due to improper load distribution among the nodes. Multi path routing protocols will lead to better load balancing than single path routing protocols. tSEL protocol selects node disjoint multiple paths and shares load among the paths effectively by following a new load sharing mechanism. tSEL provides security through rsa public key algorithm and MD5 hash algorithm.

关键词： MD5 hash function Multipath Routing protocols Node disjoint paths rsa algorithm WSN

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algorithmic Challenges in Flexible Optical Networks

Algorithmic Challenges in Flexible Optical Networks

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International Conference on Computing, Networking and Communications (ICNC)

作者： Varvarigos, E. A. Christodoulopoulos, K. Univ Patras Comp Engn & Informat Dept GR-26110 Patras Greece Comp Technol Inst & Press Diophantus Patras Greece

ISBN: (纸本)9781479923588

We discuss some basic algorithmic issues in flexible optical networks, highlighting the algorithmic challenges and differences to fixed-grid WDM networks and outline algorithms for planning and operating flexible optical networks. In the planning problem we assume that we are given the traffic matrix and the transponders' feasible configurations that account for the physical layer, and the objective is to serve the traffic and find a solution that minimizes the maximum spectrum used and the cost (number and type) of transponders. The offline rsa algorithm that we outline serves demands for their requested rates by choosing the route, breaking the transmissions in more than one connection and placing regenerators, if needed, and allocating spectrum to them. We then turn our attention to operating a flexible optical network. We assume that the spectrum allocated to a connection can be adapted so as to follow the time-varying required transmission rate. We outline a framework to orchestrate spectrum sharing and a rsa algorithm to serve the demands so as to minimize the blocking caused by the traffic fluctuations.

关键词： optical communication equipment telecommunication network planning telecommunication traffic transponders wavelength division multiplexing rsa algorithm algorithmic challenges fixed-grid WDM networks flexible optical network networks. planning orchestrate spectrum sharing physical layer spectrum allocation time-varying required transmission rate traffic matrix transponders Heuristic algorithms Optical fiber networks Planning Repeaters Resource management Transponders WDM networks

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Secret Communication using Public key Steganography

Secret Communication using Public key Steganography

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IEEE International Conference on Recent Advances and Innovations in Engineering (ICRAIE)

作者： Mishra, Madhusudhan Tiwari, Gangadhar Yadav, Arun Kumar NERIST ECE Dept Itanagar AP India NIT IT Dept Durgapur W Bengal India MGIMT CSE Dept Lucknow Uttar Pradesh India

ISBN: (纸本)9781479940400

This paper introduces a new steganographic technique for secret data communication based on Public Key Digital Image steganography by combining public key cryptography with Digital Image Steganography. The proposed scheme employs rsa algorithm with 1024 bits key size for secret data encryption before inserting it into cover image and F5 steganographic technique to hide the encrypted message inside the cover image imperceptibly. The F5 algorithm embeds the message into randomly chosen Discrete Courier Transform (DCT) coefficients. By employing matrix embedding which minimizes the changes to be made to the length of certain message, it provides high Steganographic capacity, faster speed and can prevent visual and statistical attacks. The encryption key used in message encryption is big enough to thwart known cryptanalytic attacks. Experiments suggest that the stego image and cover images are perceptually similar. Further, the stego images are robust against image processing distortions.

关键词： Image Steganography rsa algorithm F5 algorithm Discrete Cosine Transform Statistical Attack

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