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检索条件"主题词=encryption algorithm"

共 293 条记录，以下是221-230 订阅

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Secure and Efficient LBIST for Feedback Shift Register-Based Cryptographic Systems

Secure and Efficient LBIST for Feedback Shift Register-Based...

引用

19th IEEE European Test Symposium (ETS)

作者： Dubrova, Elena Naslund, Mats Selander, Goran Royal Inst Technol S-16440 Stockholm Sweden Ericsson Res S-16480 Stockholm Sweden

ISBN: (纸本)9781479934157

Cryptographic methods are used to protect confidential information against unauthorised modification or disclosure. Cryptographic algorithms providing high assurance exist, e.g. AES. However, many open problems related to assuring security of a hardware implementation of a cryptographic algorithm remain. Security of a hardware implementation can be compromised by a random fault or a deliberate attack. The traditional testing methods are good at detecting random faults, but they do not provide adequate protection against malicious alterations of a circuit known as hardware Trojans. For example, a recent attack on Intel's Ivy Bridge processor demonstrated that the traditional Logic Built-In Self-Test (LBIST) may fail even the simple case of stuck-at fault type of Trojans. In this paper, we present a novel LBIST method for Feedback Shift Register (FSR)-based cryptographic systems which can detect such Trojans. The specific properties of FSR-based cryptographic systems allow us to reach 100% single stuck-at fault coverage with a small set of deterministic tests. The test execution time of the proposed method is at least two orders of magnitude shorter than the one of the pseudo-random pattern-based LBIST. Our results enable an efficient protection of FSR-based cryptographic systems from random and malicious stuck-at faults.

关键词： cryptographic system Feedback Shift Register encryption algorithm Secure Stuck at faults Confidential Information Computer hardware Invasive software

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Randomness Extraction Techniques for Jittery Oscillators 38

Randomness Extraction Techniques for Jittery Oscillators

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38th International Spring Seminar on Electronics Technology (ISSE)

作者： Marghescu, Andrei Svasta, Paul Simion, Emil Univ Politehn Bucuresti Bucharest Romania CETTI Bucharest Romania Adv Technol Inst Bucharest Romania

ISBN: (纸本)9781479988600

Random numbers represent one of the most sensitive parts of cryptography, being used in different encryption algorithms and/or communication protocols for their property of being irreversible and non-deterministic. Usually, for an attacker, it is almost impossible to break by brute force the encryption algorithm of a secure communication. This is why they focus on breaking some of the consisting components, such as the Random Number Generator (RNG). The basic property of a RNG is that its output depends just on a physical phenomenon and not on anything else (like a previous state). Using a poor RNG (a deterministic one) can lead to communication compromising. A RNG is basically based on a physical phenomenon that cannot be controlled like the jitter from oscillators. This paper describes analyses and demonstrates the techniques that can be used for extracting randomness from jittery oscillators.

关键词： encryption algorithm Physical Phenomena Jittery Random Number Generators Oscillators random numbers Communication system security Communication protocols cryptography Jitter

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Laying a Secure Foundation for Mobile Devices 20

Laying a Secure Foundation for Mobile Devices

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20th Annual Network and Distributed System Security Symposium, NDSS 2013

作者： Smalley, Stephen Trusted Systems Research National Security Agency

Conduct and sponsor research to provide information assurance for national security systems. Enabling safe operation in risky or compromised environments. Research into cryptographic algorithms and protocols, system analysis and design methods, trust mechanisms, and systems behavior. Creators of SE Linux, Xen Security Modules, Linux Kernel Integrity Monitor, and SE Android.

关键词： Mobile devices National Security Systems Safe handling Linux computer information security encryption algorithm Secure Accidents,emergencies and safety System analyses Methyltestosterone Androids design approach System design

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Correlation Based Cryptanalysis on A Chaotic encryption of JPEG Image

Correlation Based Cryptanalysis on A Chaotic Encryption of J...

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International Congress on Image and Signal Processing

作者： Weihai Li Key Lab. of Electromagn. Space Inf. Univ. of Sci. & Technol. of China Hefei China

ISBN: (纸本)9781479958368

Image encryption is a hotspot of multimedia security. Many researchers adopted chaotic systems as pseudo-random number generators in image encryptions considering the properties of high sensitivity, large periodicity, low computation cost, Unpredictable, and etc. However, there is no deterministic approach to prove whether the way of using chaotic systems in an image encryption algorithm is secure or not. In this paper, a cryptanalysis is made to decipher a recent proposed chaotic JPEG image encryption algorithm by reforming the scrambled orders via correlation analysis, due to the improper use of chaotic sequence. Experimental results demonstrate the effectiveness of this method.

关键词： chaos cryptography image coding random number generation chaotic JPEG image encryption algorithm chaotic sequence chaotic systems correlation based cryptanalysis multimedia security pseudorandom number generators scrambled orders via correlation analysis algorithm design and analysis Chaos encryption Multimedia communication Signal processing Signal processing algorithms JPEG image chaotic system correlation analysis cryptanalysis image encryption Chaotic systems JPEG image cryptography chaos algorithm design and analysis Signal processing algorithms pseudorandom number generation Multimedia communications image coding signal processing chaotic encryption Pseudorandom number generator Correlation analysis CRYPTANALYSIS encryption algorithm

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Research on the Design of Lower Computer of Data encryption System

Research on the Design of Lower Computer of Data Encryption ...

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2015 4th National Conference on Electrical,Electronics and Computer Engineering(NCEECE 2015)

作者： Honghui Lai Juan Zhong College of Information Engineering Gannan Medical University

ISBN: (纸本)9781510819085

In the modern information and network society, the data security is very important to our daily lives. The data encryption system can help us to protect the security of personal information. This paper mainly introduces the hardware and software design of the lower computer of data encryption system, involving the communication interface design, memorizer design, circuit design, algorithm selection and algorithm design. After system testing, it has high success rates of encryption and decryption and improves the programming speed.

关键词： Data encryption System Lower Computer encryption algorithm

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Research on Information Security of Pulmonary Nodules Based on DOSA 11

Research on Information Security of Pulmonary Nodules Based ...

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11th International Conference on Information Communication and Applications (ICICA)

作者： Wu, Lin Dawod, Ahmad Yahya Miao, Fang Chiang Mai Univ Int Coll Digital Innovat 239 Nimmanhaemin Rd Chiang Mai 50200 Thailand Chengdu Univ Big Data Res Inst Chengdu Sichuan Peoples R China

ISBN: (纸本)9781665490115

At present, the information disclosure, especially medical information disclosure, is very serious,According to bitglass, the number of medical data leaks in the United States doubled in 2020, affecting more than 26 million *** paper proposes an information security model based on DOSA (data-oriented security architecture [1]). this module integrates various existing pulmonary nodule algorithms, the data is triple protected based on the DOSA[2]. Firstly, the elliptic curve digital signature algorithm is used to encrypt the data, then the Tang poetry dictionary is divided into a hash table by Tang poetry encryption algorithm, and the hash table is converted into bits according to the rhythm of Tang poetry to generate encrypted text;If the first and second parts are cracked and destroyed by malicious users, the system will utilize convolutional neural network and a deep learning algorithm to perform convolutional confrontation algorithm. for data security and efficiency, the severs will utilize the load balancing to process the input *** show that, the information security model in this paper can keep the protection rate against malicious attacks above 90% without affecting the server performance.

关键词： encryption algorithm elliptic encryption performance optimization load balancing

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A Novel Approach to Enhance Security in WEP 1

A Novel Approach to Enhance Security in WEP

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International Conference on Green Computing and Internet of Things (ICGCIoT)

作者： Garg, Ashish Ctr Dev Adv Comp Noida India

ISBN: (纸本)9781467379106

This paper begins by introducing the concept of Ron's Code 4 (RC4). The introductory section gives brief information about the architecture of RC4 and its various flaws. In order to examine the RC4 security threats, this paper will look at both architectural flaws and exceptional flaws. Here, I propose a novel approach to provide additional security to the original RC4 algorithm. With the given 64 bit dynamic key of RC4 (initial vector + fixed key), we have size of the initial vector is 24 bit and size of fixed key is 40 bit. These 40 bit keys are getting changed after a specific time to protect RC4 from brute force.

关键词： RC4 WEP encryption algorithm WLAN security

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CRYPTOGRAPHY BASED ON NEURAL NETWORK

CRYPTOGRAPHY BASED ON NEURAL NETWORK

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26th European Conference on Modelling and Simulation (ECMS 2012)

作者： Volna, Eva Kotyrba, Martin Kocian, Vaclav Janosek, Michal Univ Ostrava Dept Informat & Comp Dvorakova 7 Ostrava 70200 Czech Republic

ISBN: (纸本)9780956494443

The goal of cryptography is to make it impossible to take a cipher and reproduce the original plain text without the corresponding key. With good cryptography, your messages are encrypted in such a way that brute force attacks against the algorithm or the key are all but impossible. Good cryptography gets its security by using incredibly long keys and using encryption algorithms that are resistant to other form attack. The neural net application represents a way of the next development in good cryptography. This paper deals with using neural network in cryptography, e.g. designing such neural network that would be practically used in the area of cryptography. This paper also includes an experimental demonstration.

关键词： Cryptography key encryption system encryption algorithm artificial neural network

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Differential Evolution for the Cryptanalysis of Transposition Cipher 3

Differential Evolution for the Cryptanalysis of Transpositio...

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3rd International Conference on Information and Communication Technology ICoICT

作者： Wulandari, Gia S. Rismawan, Wahyu Saadah, Siti Telkom Univ Sch Comp Bandung Indonesia

ISBN: (纸本)9781479977529

Transposition cipher is a class of hystorical encryption algorithms that rearrange positions in plaintext based on some fixed permutation which is its secret key. In this research Differential Evolution was used to attack the transposition cipher, which is a permutation of integer problem. Despite the fact that Differential Evolution mostly used for problem with real numbers;this paper shows that Differential Evolution could be used to correctly decrypt ciphertext that has up to permutation length of 9, but started to have half of incorrect answers in 10 simulations done to permutation length of 10.

关键词： Permutation Cipher transposition Transposition encryption algorithm CRYPTANALYSIS cleartext secret key evolution Evolution evolution evolution

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Efficient RFID authentication protocol for minimizing RFID tag computation

Efficient RFID authentication protocol for minimizing RFID t...

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1st International Conference on Hybrid Information Technology

作者： Rhee, Keunwoo Kwak, Jin Yi, Wan S. Park, Chanho Park, Sangjoon Yang, Hyungkyu Kim, Seungjoo Won, Dongho Sungkyunkwan Univ Informat Secur Grp 300 Cheoncheon Dong Suwon 440746 Gyeonggi Do South Korea Soonchunhyang Univ Dept Informat Secur Asan 336745 South Korea INDI SYST Co Ltd Seoul 152848 South Korea Kangnam Univ Dept Comp & Media Engn Giheung 446702 South Korea

ISBN: (纸本)9783540773672

RFID systems have become vital technology for realizing ubiquitous computing environments. However, features of RFID systems present potential security and privacy problems. In an effort to resolve these problems, many kinds of security and privacy enhancement technologies have been researched. However, solutions produced to date still have flaws and are not sufficiently effective for real RFID systems such as the EPCglobal network (TM). Therefore, in this paper, to make RFID systems more secure and efficient, improved technology based oil password, is proposed. The proposed technology combines ail encryption algorithm with a password-derived key, and can be applied to low-cost RFID systems for enhancing the security and privacy of these systems.

关键词： RFID EPCglobal network (TM) authentication encryption algorithm password password-derived key

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