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Breaking the data encryption standard using networks of evolutionary processors with parallel string rewriting rules

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INTERNATIONAL JOURNAL OF COMPUTER MATHEMATICS 2009年第4期86卷 567-576页

作者： Choudhary, Ashish Krithivasan, Kamala Indian Inst Technol Dept Comp Sci & Engn Madras 600036 Tamil Nadu India

In this paper we introduce a biologically inspired distributed computing model called networks of evolutionary processors with parallel string rewriting rules (NEPPS), which is a variation of the hybrid networks of evolutionary processors introduced by Martin-Vide et al. Such a network contains simple processors that are located in the nodes of a virtual graph. Each processor has strings (each string having multiple copies) and string rewriting rules. The rules are applied parallely on the strings. After the strings have been rewritten, they are communicated among the processors through filters. We show that we can theoretically break the DES (data encryption standard), which is the most widely used cryptosystem, using NEPPS. We prove that, given an arbitrary plain-text, cipher-text pair, one can recover the DES key in a constant number of steps.

关键词： networks of evolutionary processors data encryption standard unconventional models of computation

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New extension of data encryption standard over 128-bit key for digital images

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NEURAL COMPUTING & APPLICATIONS 2021年第20期33卷 13845-13858页

作者： Arshad, Sadiqa Khan, Majid Inst Space Technol Dept Appl Math & Stat Islamabad Pakistan Inst Space Technol Cyber & Informat Secur Lab Islamabad Pakistan

The strength of any block cipher depends on the key size, total number of rounds and the strength of confusion component against differential cryptanalysis. data encryption standard (DES) as a block cipher has enjoyed a worldwide acceptance for more than three decades. It is a symmetric block cipher and considered to be very strong against all known attacks at that time. It uses 64-bit key size and block size, but the advancement in technology results in increasing the speed of the computers and thus makes DES not secure any more. The shorter key size is the weak area of DES. In this article, we have increased the block size as well as the key size from 64 to 128 bits. The internal structure of our proposed mechanism ultimately changed all other components of DES accordingly. By this improvement, our anticipated scheme is more secure due to its robust due to its confusion and diffusion components. The algorithm is applied on the plain text and on images. We have performed the standard benchmarks statistical analyses on our suggested encryption scheme in order to authenticate the anticipated mechanism.

关键词： data encryption standard Extended data encryption standard Image encryption

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Modified data encryption standard encryption algorithm with improved error performance and enhanced security in wireless fading channels

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SECURITY AND COMMUNICATION NETWORKS 2015年第4期8卷 565-573页

作者： Zibideh, Walid Y. Matalgah, Mustafa M. Univ Mississippi Ctr Wireless Commun Dept Elect Engn University MS 38677 USA

encryption is becoming a vital process to ensure security over the wireless channel. However, using well-known encryption algorithms to encrypt data in wireless communication results in a catastrophic error because of the avalanche effect, which is an inherited criterion to ensure security. Although this criterion is desirable, these algorithms do not take into account the error characteristics of the wireless channel. Therefore, if an error occurs in the encrypted data over the channel, the decryption process at the receiver results in half the original bits to be in error because of this criterion. Hence, the need for a new secure encryption algorithm that takes into account the error characteristics of the wireless channel becomes necessary. In this paper, we propose a modification to the data encryption standard (DES) to make it secure and immune to errors caused by the wireless channel. We observe that using the modified algorithm in wireless channels improves the bit error rate performance as well as security compared with DES. We consider an additive white Gaussian noise with fading and evaluate the performance of the proposed algorithm in terms of bit error rate. We also show that the proposed algorithm is secure as compared with DES. Copyright (c) 2014 John Wiley & Sons, Ltd.

关键词： encryption data encryption standard avalanche criterion error performance wireless channel security encryption complexity

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Key-Based Enhancement of data encryption standard For Text Security 4

Key-Based Enhancement of Data Encryption Standard For Text S...

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IEEE 4th National Computing Colleges Conference (NCCC)

作者： Reyad, Omar Mansour, Hanaa M. Heshmat, Mohamed Zanaty, Elnomery A. Shaqra Univ Coll Comp & IT Shaqra Saudi Arabia Sohag Univ Fac Sci Sohag Egypt Sohag Univ Fac Comp & Informat Sohag Egypt

ISBN: (纸本)9781728167190

Securing various data types such as text, image, and video is needed in real-time communications. The transmission of data over an insecure channel is a permanent challenge, especially in mass Internet applications. Preserving confidentiality and integrity of data toward malicious attacks, accidental devastation, change during transfer, or while in storage must he improved. data encryption standard (DES) is considered as a symmetric-key algorithm that is most widely used for various security purposes. In this work, a Key-based Enhancement of the DES (KE-DES) technique for securing text is proposed. The KE-DES is implemented by the application of IOU steps: the first is merging the Odd/Even hit transformation of every key hit in the DES algorithm. The second step is replacing the right-side expansion of the original DES by using key-Distribution (K-D) function. The K-D allocation consists of 8-bits from Permutation Choice-1 (PC-1) key outcome. The next 32-bits outcomes from the right-side of data, there is also 8-bits outcome from Permutation Choice-2 (PC-2) in each round. The key and data created randomly, in this case, provide adequate security and the KE-DES model is considered more efficient for text encryption.

关键词： data encryption standard Text Security CBC Mode key-Distribution Function

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Differential power analysis for data encryption standard

Differential power analysis for data encryption standard

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8th International Conference on Electronic Measurement and Instruments

作者： Sun Haitao He Xunlai Zhao Qiang Chu Jie Ordnance Engn Coll Dept Guns Engn Shijiazhuang 050003 Hebei Peoples R China Ordnance Engn Coll Dept Comp Engn Shijiazhuang 050003 Hebei Peoples R China

ISBN: (纸本)9781424411351

Along with the society relies on more and more greatly to the computer, people also attach more and more importance to the security problem in the application. The cryptography is continuously safeguarding the safe effectively protective screen of system. Owing to the fact that to break the key using mathematics technology is very difficult, people put forward the side-channel attack method in recent years. The major content of this paper is the research of differential power analysis.

关键词： data encryption standard DPA SCA

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Strength of Two data encryption standard Implementations Under Timing Attacks

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ACM Transactions on Information and System Security 1999年第4期2卷 416-437页

作者： Hevia, Alejandro Kiwi, Marcos Dept. de Cs. de la Computación Fac. de Cs. Físicas y Matemáticas University of Chile Santiago Casilla 2777 Avenida Blanco Encalada 2120 Chile Dept. de Ing. Matemática Fac. de Cs. Físicas y Matemáticas University of Chile Santiago Casilla 170/3 Chile

We study the vulnerability of two implementations of the data encryption standard (DES) cryptosystem under a timing attack. A timing attack is a method, recently proposed by Paul Kocher, that is designed to break cryptographic systems. It exploits the engineering aspects involved in the implementation of cryptosystems and might succeed even against cryptosystems that remain impervious to sophisticated cryptanalytic techniques. A timing attack is, essentially, a way of obtaining some user's private information by carefully measuring the time it takes the user to carry out cryptographic operations. In this work, we analyze two implementations of DES. We show that a timing attack yields the Hamming weight of the key used by both DES implementations. Moreover, the attack is computationally inexpensive. We also show that all the design characteristics of the target system, necessary to carry out the timing attack, can be inferred from timing measurements. © 1999, ACM. All rights reserved.

关键词： Cryptanalysis cryptography data encryption standard Security timing attack

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data encryption standard based protection method of privacy data on Internet of Things

Data encryption standard based protection method of privacy ...

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2016 4th International Conference on Machinery,Materials and Computing Technology(ICMMCT 2016)

作者： Xiaohui CHENG Zhongning LIANG College of Information Science and Engineering Guilin University of Technology

There are a lot of information and network security threats along with the rapid development of Internet of things(Io T). This paper according to the environmental features of the IOT node limited hardware resource and its requirements, and takes aim at the privacy information security issues for the Io T, an encryption method of lightweight data encryption is designed based on data encryption standard(DES). In order to reduce the complexity of the algorithm but ensuring the security, this algorithm simplified the data packet and the iterative rounds;at the same time added the random selection of S boxes, and improved sub key generation scheme to achieve some degree of "different keys in each encryption". Experiments show that, the algorithm reduces the computational complexity and resource cost, improve operation efficiency. It is a suitable method of privacy data protection in the Io T.

关键词： Internet of things privacy data protection data encryption standard information security

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An Efficient and Secure Big data Storage in Cloud Environment by Using Triple data encryption standard

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BIG data AND COGNITIVE COMPUTING 2022年第4期6卷 101-101页

作者： Ramachandra, Mohan Naik Srinivasa Rao, Madala Lai, Wen Cheng Parameshachari, Bidare Divakarachari Ananda Babu, Jayachandra Hemalatha, Kivudujogappa Lingappa Visvesvaraya Technol Univ Sri Dharmasthala Manjunatheshwara Inst Technol Dept Elect & Commun Engn Ujire 574240 India PACE Inst Technol & Sci Dept Comp Sci & Engn Ongole 523272 India Natl Yunlin Univ Sci & Technol Dept Elect Engn Touliu 640301 Taiwan Natl Yunlin Univ Sci & Technol Bachelor Program Ind Projects Touliu 640301 Taiwan Nitte Meenakshi Inst Technol Dept Elect & Commun Engn Bengaluru 560064 India Malnad Coll Engn Dept Informat Sci & Engn Hassan 573202 India Sri Krishna Inst Technol Dept ISE Bengaluru 560090 India

In recent decades, big data analysis has become the most important research topic. Hence, big data security offers Cloud application security and monitoring to host highly sensitive data to support Cloud platforms. However, the privacy and security of big data has become an emerging issue that restricts the organization to utilize Cloud services. The existing privacy preserving approaches showed several drawbacks such as a lack of data privacy and accurate data analysis, a lack of efficiency of performance, and completely rely on third party. In order to overcome such an issue, the Triple data encryption standard (TDES) methodology is proposed to provide security for big data in the Cloud environment. The proposed TDES methodology provides a relatively simpler technique by increasing the sizes of keys in data encryption standard (DES) to protect against attacks and defend the privacy of data. The experimental results showed that the proposed TDES method is effective in providing security and privacy to big healthcare data in the Cloud environment. The proposed TDES methodology showed less encryption and decryption time compared to the existing Intelligent Framework for Healthcare data Security (IFHDS) method.

关键词： big data Cloud data encryption standard security triple data encryption standard

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Differential Power Analysis for data encryption standard

Differential Power Analysis for Data Encryption Standard

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2007 8th International Conference on Electronic Measurement & Instruments（ICEMI’2007）

作者： Sun Haitao~1 He Xunlai~1 Zhao Qiang~2 Chu Jie~2 (1 Dept.of Guns Engineering,Ordnance Engineering College,Hebei,Shijiazhuang 050003 China) (2 Dept.of Computer Engineering,Ordnance Engineering College,Hebei,Shijiazhuang,050003.China)

Along with the society relies on more and more greatly to the computer,people also attach more and more importance to the security problem in the *** cryptography is continuously safeguarding the safe effectively protective screen of *** to the fact that to break the key using mathematics technology is very difficult,people put forward the side-channel attack method in recent *** major content of this paper is the research of differential power analysis.

关键词： data encryption standard DPA SCA

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A simplified data encryption standard algorithm

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Cryptologia 1996年第1期20卷 77-84页

作者： Schaefer, Edward F. Department of Mathematics Santa Clara University Santa Clara CA 95053 United States

In this paper we describe a method of teaching the data encryption standard algorithm in an undergraduate cryptology course. We present a simplified version of the data encryption standard algorithm with all parameters reduced as much as possible. This makes the inner workings of the algorithm accessible to undergraduates. Once the simplified algorithm has been explained to a class, it is easier to explain the real one. We suggest class discussions and homework based on this simplified algorithm. © 1996 Taylor & Francis Group, LLC.

关键词： Cryptology course data encryption standard

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