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检索条件"主题词=Encryption algorithm"

共 279 条记录，以下是101-110 订阅

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The new lightweight encryption mechanism for large media signal processing system in global content delivery network

The new lightweight encryption mechanism for large media sig...

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International Conference on Information Technology and Computer Application Engineering (ITCAE)

作者： Heo, Juseung Park, Chulwoo Kim, Keecheon Ok, Kisang Konkuk Univ Dept Comp Sci & Engn Seoul South Korea KT Corp Seoul South Korea

ISBN: (纸本)9781315813288;9781138000797

GCDN (Global Content Delivery Networks) is supposed to provide contents quickly through the nearest cache server which can reduce the load of a cache server as the user's contents request. Recently, high-capacity media stream services have been increasing because of explosive demand, but these are only speedy consideration ones mostly. These services have no security mechanism which is extremely critical on their works in contents delivery network. For this reason, If the whole media stream data is encrypted for the security consideration, it is not only damages features of GCDN services characteristic (fast providing of contents), but also wastes network resources inefficiently. Therefore, this research uses Selective encryption, one of the stream encryption techniques. Additionally, we implement the new lightweight encryption algorithm for the Large Media Signal Processing System (LMSPS). We simulate and compare between the new lightweight encryption algorithm and the previous encryption algorithm.

关键词： Global Content Delivery Network encryption algorithm Security System Large Media Signal Processing System

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PWLCM Based Image encryption Through Compressive Sensing

PWLCM Based Image Encryption Through Compressive Sensing

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IEEE Recent Advances in Intelligent Computational Systems (RAICS)

作者： Abhishek George, Sudhish N. Deepthi, P. P. Natl Inst Technol Dept Elect & Commun Engn Calicut 673601 Kerala India

ISBN: (纸本)9781479921775

In this paper, compressive sensing is combined with a chaotic key based generation of measurement matrix to provide an effective encryption algorithm for multimedia security. Block-based compressive sensing provides a better way in the field of image and video transmission by reducing the memory requirements and complexity, where as multiple hypothesis prediction provides a competent way in improving PSNR during reconstruction of block based compressive sensed images and videos. The measurement matrix F place a crucial role in this compressive sensing and as well as in the reconstruction process. A possibility to generate secure measurement matrix using piecewise linear chaotic map (PWLCM) as the seed and then hiding initial condition, system parameter, number of iterations of PWLCM as the key enable the sender to incorporate room for encryption along with the compression in a single step. The above mentioned scheme provides high level of data security, reduced complexity, compression with a good reconstruction quality and beside all it reduce the burden of sending the measurement matrix along with the data which further reduces the complexity in over all compressive sensing framework.

关键词： measurement matrix Compressed sensing Data Security cryptography memory requirements images encryption algorithm Video transmission Imagery (Psychotherapy) high-level data type

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Multicore encryption and Authentication on a Reconfigurable Hardware 2

Multicore Encryption and Authentication on a Reconfigurable ...

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IEEE 2nd International Conference on Recent Trends in Information Systems (ReTIS)

作者： Ghosh, Saheli Das, Subha Jyoti Paul, Rourab Chakrabarti, Amlan Comp Sci & Engn RCC Inst Technol 2012 2014 Kolkata W Bengal India Univ Calcutta AK Choudhury Sch Informat Technol Kolkata W Bengal India

ISBN: (纸本)9781479983490

Security has always been the toughest challenge in data communication, at the same time it is the biggest necessity in transmitting confidential data. Sensitive data are often at stake when they are deployed in a network. Embedded system design is a very popular research activity as it has a wide range of applications namely, security and surveillance, personal digital assistant, biomedical systems, mobile and pervasive communication gadgets, along with its huge speed compared to very popular software designs. Most of the embedded system applications involve data communication between multiple parties. To add to it, sensor technology requires physically secured systems, which can be dealt with cryptographic and hashing algorithms. However, a parallel implementation of encryption and Hashing algorithm will cost the efficiency and performance speed of the system. To overcome the shortcomings a multi-core system, capable of parallely executing authentication and encryption is proposed. In this proposal a encryption algorithm and a hash algorithm are placed into two ARM cortex processor of ZYNQ 7020-clg484 FPGA board using ISE 14.4 design suite. The true parallel execution of both algorithms increases system throughput. The soft core IPs(RS232 and Ethernet) are placed in FPGA region to handle realtime data.

关键词： cryptography reconfigurable hardware data communication Authentication real-time data hashing encryption algorithm sensor technology Research Activities Ethernet networks Embedded systems Piles Multi-core processors

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Image information hiding encryption using chaotic sequence

Image information hiding encryption using chaotic sequence

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11th International Conference on Knowledge-Based Intelligent Informational and Engineering Systems/17th Italian Workshop on Neural Networks

作者： Liu, Zhen Xi, Lifeng Zhejiang Wanli Univ Sch Comp Sci & Informat Technol Ningbo 315100 Zhejiang Peoples R China

ISBN: (纸本)9783540748267

In this paper, we propose a new image watermark algorithm of information hiding scheme based on chaotic encryption. Chaotic sequence is regarded as a noise-like spread sequence, and the secret signal to be transmitted is modulated and hidden in the carrier image as white noise to implement secure communication. The encryption principle of new algorithm is firstly presented in this paper, and the merits of new scheme are quantitatively analyzed by defining integrality and imperceptibility of image information. The results of computer simulation are described in the end.

关键词： information hiding chaotic sequence encryption algorithm wavelet transform

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A New Image Stream encryption Technique 58

A New Image Stream Encryption Technique

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IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS)

作者： Hassan, Firas Limbird, Michael Ullagaddi, Vishwanath Devabhaktuni, Vijay Ohio No Univ Dept Elec & Comp Engn & Comp Sc Ada OH 45810 USA Univ Toledo Dept Elec & Comp Engn & Comp Sc Toledo OH 43606 USA

ISBN: (纸本)9781467365574

This paper introduces a self-synchronous stream cipher with a considerable key space. In the proposed technique, the parity bit plane of a public image is used to encrypt the message. Simulation results showed that the histogram of the ciphered image is uniform representing almost equivalent probability of occurrence of each intensity level. The entropy of the ciphered image is almost equal to the theoretical value of 8, indicating that the information leakage in the proposed encryption process is negligible. The correlation coefficients of the ciphered image prove that there exists almost zero correlation between its pixels. The simulation results also showed that the proposed technique is highly sensitive to the four different parts of its password. Also, the plain-text attack analysis gave NPCR and VACI values that are close to ideal. The proposed technique is computationally simpler than other image encryption techniques in the literature. Finally, a high PSMSE of 83 dB in the decoded image was achieved at a ciphered bit error rate of 10(-4). Therefore, the proposed stream cipher can be efficiently used in real time multimedia and wireless applications.

关键词： cryptography encryption algorithm Stream cipher Image images Imagery (Psychotherapy) Zero correlation NPCDR1 gene Public Opinion strength class occurrence rate theoretical value Bit error rate histograms

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The design of encryption system based on RC5 arithmetic

The design of encryption system based on RC5 arithmetic

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International Conference on Advanced Design and Manufacturing Engineering (ADME 2011)

作者： Liang, SongFeng Dong, ZhuRong Qiu, Hao Shenzhen Polytech Sch Automot & Transportat Engn Shenzhen Guangdong Peoples R China

This paper includes some conceptions of symmetrical cryptology such as " Liner Feed Back Shift Register"(LFSR) and RC5 arithmetic. The paper also introduces the application of symmetrical cryptology in encry... 详细信息

ISBN: (纸本)9783037852132

关键词： Linear Feed Back Shift Register encryption algorithm encryption techniques PIC16F628

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Design of A Creative encryption Approach Based On Pataphysics 3

Design of A Creative Encryption Approach Based On Pataphysic...

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3rd International Conference on Trustworthy Systems and their Applications (TSA)

作者： Wang, Xuan Zhang, Lu Yang, Hongji Bath Spa Univ Ctr Creat Comp Bath Avon England

ISBN: (纸本)9781509035397

encryption algorithms are widely used to enhance the data confidentiality and integrity in software systems. Most of the conventional encryption algorithms are designed based on mathematical methods. Sometimes there are traces left behind, which can be possibly detected and utilised by attackers. Based on the ideas of knowledge combination derived from Creative Computing, in order to provide a safer user experience, this paper attempts to introduce a creative encryption approach based on Pataphysics. Pataphysics is widely known as the science of imaginary solutions and laws, governing exceptions. One of the most important advantages of Pataphysics is the novel or innovative methods to understand and explore the surrounding world. It is believed that based on the key concepts provided by Pataphysics, Clinamen, something new might be discovered for traditional encryption design. The creative approach aims to utilise the ambiguity in language to enhance the confidentiality of encryption algorithms. We hope the proposed approach could provide a promising direction for software and information security.

关键词： Creative Computing encryption algorithm Pataphysics Software Security

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Implementation of BLAKE 256 Hash function for Password encryption and Parallel CRC

Implementation of BLAKE 256 Hash function for Password encry...

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Proceedings of Online International Conference on Green Engineering and Technologies (IC-GET)

作者： Fernandes, Floyd Gupta, Ritu Sivanantham, S. Sivasankaran, K. VIT Univ Sch Elect Engn Vellore Tamil Nadu India

ISBN: (纸本)9781467397810

One of the major sources of information in recent times is the internet, which facilitates the exchange of information between thousands of people at any instant. The transmission of sensitive data such as passwords must be accompanied by some form of robust protection to ensure prevention of unauthorized access. The requirement of strong encryption algorithms is of utmost importance. In this paper we present the Verilog description and hardware implementation on Altera DE2115 board of password encryption using Blake 256 cryptographic hash function coupled and parallel CRC for high performance, transmission error control.

关键词： encryption algorithm Hash function Digest Salt

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Ultra-low Power encryption Engine for Wireless Implantable Medical Devices

Ultra-low Power Encryption Engine for Wireless Implantable M...

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55th IEEE International Midwest Symposium on Circuits and Systems (MWSCAS)

作者： Hosseini-Khayat, Saied Bahmanyar, Parvin Rahiminezhad, Ehsan Sawan, Mohamad Ferdowsi Univ Mashhad Dept Elect Engn Digital Syst Design Lab Mashhad Iran Polytechn Montreal Dept Elect Engn Polystim Neurotechnol Lab Montreal PQ H3C 3A7 Canada

ISBN: (纸本)9781467325271

Wireless implantable medical devices are expected to perform cryptographic processing at an absolutely low level of power consumption. This paper presents the design of an ultra-low power ASIC core implementing the PRESENT encryption algorithm. To minimize power consumption, subthreshold CMOS logic is adopted. To implement robust combinational logic (S-Boxes) in PRESENT at subthreshold, a multiplexor-tree architecture based on CMOS transmission gates is proposed. Our post-layout simulations show that our PRESENT core consumes around 50 nW at 0.35V supply voltage at 25 kHz clock frequency, proving the feasibility of ultra-low power encryption.

关键词： Power consumption Implantable medical device encryption engine encryption algorithm wireless Energy sources subthreshold

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Attribute-Based Online/Offline encryption in Smart Grid 24

Attribute-Based Online/Offline Encryption in Smart Grid

引用

International Conference on Computer Communications and Networks ICCCN

作者： Wang, Zhiwei Chen, Feng Xia, Aidong Nanjing Univ Posts & Telecommun Sch Comp Sci Nanjing 210023 Jiangsu Peoples R China

ISBN: (纸本)9781479999644

A smart grid is a modernized electrical grid that uses distribution networks to deliver electricity. It aims to gather and act on information, such as information about the behaviors of grid entities, in an automated fashion to improve the efficiency, security and reliability. It is important that the sensitive information should be shared securely among the grid entities. In smart grid, smart devices (e.g., smart meters) usually have limited computational capability. In this paper, we propose an online/offline attribute based encryption (ABE) scheme based ***'s ABE scheme with hidden policy. In our scheme, the advantages of ***'s scheme are kept. Thus, the data privacy and policy privacy are all preserved well. The computational overhead of encryptors are reduced by splitting the computation for encryption algorithm into two phases: online/offline. Most of the laborious decryption operations are delegated to the offline phase. The online phase can then rapidly assemble an ABE ciphertext when the message and the attribute control policy become known.

关键词： Smart grids Power grids Smart meters encryption algorithm cryptography Data privacy Sensitive data TWO-PHASE Electricity

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