The unpredictable nature of a deterministic system would seem to lend itself well to be a basis of a cryptosystem. In any case, chaotic cryptography continues to be an active research. Cryptanalysis of a classical chaosbased cryptosystem with. Dhodapkar reactor control division introduction cryptography is the science of protectiinformation during ng the privacy of communication under hostile conditions. Over the past decade, there has been tremendous interest in studying the behavior of chaotic systems. An efficient chaosbased optimization algorithm approach for cryptography international journal of communication network security issn. Symmetric encryption algorithms using chaotic and nonchaotic. Ieee transactions on circuits and systems i 48, 163169. To begin with, it appeared outside conventional cryptography, first as an application of chaos theory 56, and a short time later, also as an application of chaos synchronization 58, a property of coupled chaotic oscillators studied in the framework of communication techniques.
Collision resistant hash function in chaos cryptography. Muhamad asif khan is currently working as an assistant professor in the computer engineering department of the university of engineering and technology, taxila, pakistan. The book gives a thorough description of chaos based. A pseudo random bit generator based on chaotic logistic map. Parallel algorithm for wireless data compression and encryption. Some basic cryptographic requirements for chaosbased cryptosystems. Chaosbased cryptography is a new research eld that encompasses nonlinear dynamical systems and the art of analyzing codes and ciphers. Chaos based image encryption scheme is one of the encryption algorithms that have suggested a new and efficient way to deal with fast and highly secure image encryption10. Towards this direction, this paper presents an efficient chaosbased feedback stream cipher ecbfsc for image cryptosystems.
A novel image encryption scheme based on spatial chaos map. Cryptanalysis of chaosbased cryptosystem from the hardware. The highspeed bit sequences can pass standard statistical tests for randomness after alloptical exclusiveor. Chaos based cryptography is still in its infancy and may not. The hash table is a data structure that is composed of buckets, each of which is indexed by a hash code.
Mar 01, 2007 the chaos based cryptographic algorithms have suggested some new and efficient ways to develop secure image encryption techniques. By now, the history of chaosbased cryptography is more than two decades long. The system performs basic floatingpoint analytical computation on real numbers, incorporating auxiliarily with few simple algebraic operations on integer numbers. Highperformance multimedia encryption system based on chaos. An efficient chaosbased feedback stream cipher ecbfsc for. In this paper, a new image encryption algorithm based on a chaotic economic map is proposed. Review of the book chaosbased cryptography edited by. The software available in marsaglia, 1995 provides a total of 218 pvalues for 15 tests. Encrypting images, using chaos based image encryption scheme, considers the image as 2dimensional array of pixels5. A new spatiotemporally chaotic cryptosystem and its security.
Computers and office automation bit manipulation methods bit manipulation computer programming cryptography models numbers, random research random numbers. Several examples, including chaotic block cypher and chaotic publickey encryption. An algorithm to achieve cryptography hashing is the chaos based cryptographic hash function which indexes all items in hash tables and searches for near items via hash table lookup. Several encryption algorithms were designed by using the rich dynamics which were presented by chaotic systems for cryptographic applications. Ljupco kocarev author of intelligent computing based on. A cryptographic system is a program or collection of programs which has. Theory, algorithms and applications studies in computational intelligence ljupco kocarev, shiguo lian on. A onewaycoupled chaotic map lattice is proposed for cryptography of selfsynchronizing stream cipher. The security offered by cryptographicbased systems. An additional chaotic map and a chaotic address index assignment process are added to implement level iii chaosbased eeg encryption system. Using the wellknown principles in the cryptanalysis we show that these ciphers do not behave worse than the standard ones, opening in this way a novel approach to the design of block encryption ciphers. Chaotic cryptography is the application of the mathematical chaos theory to the practice of the cryptography, the study or techniques used to privately and securely transmit information with the presence of a thirdparty or adversary. Jan 08, 2012 it may actually prove very useful as a source of entropy in a secure random number generator that is then used for other purposes.
In literature, chaotic economic systems have got much attention because of their complex dynamic behaviors such as bifurcation and chaos. Besides the main frequency of the cpu, the encryption speed of a software. Image encryption based on the jacobian elliptic maps. However, the traditional techniques of compression and encryption are neither competent nor efficient. Cryptanalysis of a new image encryption algorithm based on chaos. The public key cryptosystems based on chebyshev polynomials enjoy some nice chaotic properties, which makes them suitable for use in both encryption and digital signature. A pseudo random bit generator based on chaotic logistic map and its statistical testing. Other sources of entropy would still be needed, but even if one of those is compromised by a malicious party or through incompetence, using ca and its statistical randomness would at least partially, if not completely, mitigate the damage from that compromise. Chaosbased cryptography, attracting many researchers in the past decade, is a research field across two fields, i. We pinpoint the main limitations of the software implementation of chaosbased systems designed on the grounds of synchronization theory.
Full text of cryptanalysis of a one round chaosbased. His research interests are information security, software engineering, computational theory, and chaosbased cryptography. Block ciphers based on chaotic round function or sboxes kocarev et al. Abdelhaleem has published several refereed papers on image encryption. In this paper, chaosbased cryptography is discussed from a point of view. Cryptanalysis of chaosbased cryptosystem from the hardware perspective. There are many papers about chaos based hash functions but as far as i know none of them is used in commercial applications. As a result of investigating the above relationship, a rich variety of chaosbased cryptosystems for end. Recently, a few researches on the usage of these systems in cryptographic algorithms have been conducted. His research and work interests include software development, database applications, network programming, web developing and cryptography. Abstractin this brief article, chaos based cryptography is discussed from a point of view which i believe is closer to the spirit of both cryptography and chaos theory than the way the subject has been treated recently by many re searchers.
In the last two decades, chaos based cryptology studies have been a hot research topic. This book on chaosbased cryptography includes contributions by experts from all over the world. Current chaotic encryption systems in the literature do not fulfill security and performance demands for realtime multimedia communications. Chaotic cryptology includes two integral opposite parts. Eight 16channel eeg vue signals are tested using the encryption software. Image encryption algorithm based on chaotic economic model.
Cryptanalysis of a classical chaos based cryptosystem with some quantum cryptography features 3 and x b. In addition, we show that the cryptosystem under evaluation possesses serious security problems that imply a clear reduction of the key space. The book has eleven chapters that focus on key concepts, problems that have to be overcome, and emergent technologies. Therefore, the use of chaos in cryptography is of great interest in many areas, including databases, internet banking, software, and security of communication channels, in order to preserve confidential data from indiscretion attacks of enemies, spies, opponent, cryptanalysts, etc. Ijca survey of chaos based image encryption and decryption. Because there are problems with chaos based cryptography schemes. An implementation of the proposed algorithm on a plain. Parallel encryption decryption operations of multiple chaotic sites are conducted.
They are characterized by sensitive dependence on initial conditions, similarity to random behavior, and continuous broadband power spectrum. From 2004 to 2015, he has been working as a professional software developer in asie. Ieee transactions on circuits and systems i 48, 163. In this paper, chaosbased cryptography is discussed from a point of view which the author believes is. Hence, if an eavesdropper is connected to the communication channel after this moment, she will not obtain enough information to break the system. Chaosbased ciphers have shown some exceptionally good. In this study, chaotic systems have been used as randomness sources in designing substitution boxes. In this paper, we analyze a recent proposal in this field. The encryption speed is the lowest, and encryption is.
The story of chaosbased or chaotic cryptography is remarkable, for several reasons. Free from the electricdevice bandwidth, it can generate 10gbits random numbers in our simulation. Chaosbased cryptography av ljupco kocarev, shiguo lian bok. Fundamental theory and applications, ieee transactions on, 482, 163169 schmitz, r. We propose a scheme of alloptical random number generator rng, which consists of an ultrawide bandwidth uwb chaotic laser, an alloptical sampler and an alloptical comparator. In this paper, chaosbased cryptography is discussed from a point of view which the author believes. This paper is devoted to the analysis of the impact of chaosbased techniques on block encryption ciphers. To satisfy these demands, we propose a generalized symmetric cryptosystem based on n independently iterated chaotic maps nmap array periodically perturbed with a threelevel perturbation scheme and a double feedback global and local to increase the. Chaos has potential applications in several functional blocks of a digital. In this chapter we give an overview and the state of the art in the field of chaos based cryptography. Review of the book chaosbased cryptography edited by ljupco.
Ljupco kocarev is the author of chaosbased cryptography 5. Chaos theory becomes popular cryptography becomes more important 30 publications in 1990s various ciphers suggested focus on analog circuits. Chaos theory and cryptography cryptography ii term paper. Shannon explicitly mentions that the basic stretchandfold mechanism of chaos can be used in cryptology. New chaosbased image encryption scheme for rgb components of. As the wireless network has limited bandwidth and insecure shared media, the data compression and encryption are very useful for the broadcasting transportation of big data in iot internet of things. It chaos properties, such as randomness and ergodicity, have been proved to be suitable for designing the means for data protection. One of these research topics has been chaos based substitution boxes design studies. Each system keeps computing a numerically generated trajectory without any kind of. Some basic cryptographic requirements for chaosbased.
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