Security enhancement of fix chaoticdsss in wsns request pdf. Cryptanalysis and improvement of a block cipher based on. A wide range of ciphers are included in the chaotic stream cipher, which is a hybrid algorithm of. The chaotic direct sequence spread spectrum chaoticdsss is one of the distinguished techniques for providing secrecy in wireless communication. A chaosbased image encryption algorithm with variable control parameters. The proposed chaotic image cryptosystem employed image confusion and pixel diffusion in two phases. Thus the security of industrial wireless sensor networks iwsns is vital. In this paper, the average hop distance of the whole network in literature 19 is firstly used to replace the original. Construction of strong substitution box sbox is the most remarkable application of chaotic cryptography in the block cipher. In this paper, methods are shown how to adapt invertible twodimensional chaotic maps on a torus or on a square to create new symmetric block encryption schemes. Perturbancebased algorithm to expand cycle length of chaotic key stream. The first step consists of permutation which uses the odd key values. The protocol effectively enhances the security of information transferred between sensor nodes. Energy efficient secure routing in wireless sensor networks.
The first logistic map is used to scramble the plain image for reducing correlation between adjacent pixels. Enhanced blowfish algorithm for image encryption and decryption with supplementary key k. For the feistel structure used there are a certain vulnerabilities that can be exploited to find out the rotations the plaintext goes through. Pdf chaotic encryption scheme for wireless sensor networks. Window dialogs alert the user in case of any errors in the procedure. A recently proposed chaotic key based algorithm ckba has been shown to be unavoidably susceptible to chosenknownplaintext attacks and ciphertextonly attacks. The new cipher has much stronger security and its performance characteristics remain very.
Abstract in the past few years, a number of image encryption algorithms based on chaotic maps have been proposed. Byte substitution is applied in the second step to improve the security against the knownchosenplaintext attack. Efficient and secure chaotic sbox for wireless sensor network. Secondly, a dnabased diffusion is performed via randomly selected dna algebraic operations between the randomly permuted image matrix and a chaotic key matrix to produce the cipher image. An optimal lightweight rectangle block cipher for secure. Enhanced 1d chaotic keybased algorithm for image encryption daniel socek. Enhanced substitutiondiffusion based image cipher using. Efficient and secure chaotic sbox for wireless sensor. A block cipher based on a suitable use of the chaotic standard map. A fast enhanced secure image chaotic cryptosystem based on hybrid chaotic magic transform. In this paper we propose to conceive a chaotic encryption algorithm for wsn based on sbox and chaotic permutations.
However, it has been shown that the current ckba model is unavoidably susceptible to chosenknown. In this paper, a block cipher based on the chaotic standard map is proposed, which is composed of three parts. The pseudorandom generator has been used along with lanczos algorithm to generate root characteristics and eigenvectors. This paper proposes an image encryption algorithm lqbpnn logistic quantum and back propagation neural network based on chaotic sequences incorporating quantum keys. We observe the bifurcation behaviors and draw the bifurcation diagrams, the largest lyapunov exponent plot, and the phase portraits of the proposed map, respectively. However, it has been shown that the current ckba model is unavoidably susceptible to chosenknownplaintext attacks.
In 9, a cryptographic schema using chaotic map and genetic operations has been suggested for wsns. In the first phase, the plain image is shuffled by a modification of standard chaotic map for n rounds. An encryption scheme using chaotic map and genetic operations for wireless sensor networks presented by iis technologies no. A chaotic map is first generalized by introducing parameters and then discretized to a finite square lattice of points which represent pixels or some other data items. Enhanced cryptography by multiple chaotic dynamics. It integrates the advantages of the elliptic curve method, chaotic map and genetic encryption to achieve data confidentiality. A recently proposed chaotic key based algorithm ckba is based on a onedimensional logistic map. The encryption scheme has defined the new chaotic system structure, combined two sine maps in the permutation stage, and utilized the keystreams generated by the sinesinemap to confuse the permuted image. Using hybrid cmt image, pixels are shuffled to accomplish excellent randomness. Our proposed encryption key consists of four components. Efficient confusiondiffusion chaotic image cryptosystem.
This paper proposes a new encryption scheme called chaotic block cipher cbc to encrypt the message digest md for wsns data. Firstly, the improved onedimensional logistic chaotic sequence is used as the basic key sequence. Pseudorandomly enhanced logistic map is used to produce the key matrix while the direct logistic map is used to select dna encodingdecoding rules and dna. A chaosbased image encryption algorithm with simple logical functions. Sea can be a strong alternative block cipher for wsns. In the second phase, the shuffled image is diffused by henon chaotic. The cipher text is a collection of the number of iterations k 1 k 2 k 3. There are three phases to form the proposed block cipher as follows. In this study, a chaotic encryption system to meet the security need on wsn using chaotic systems was carried out. A wsn positioning algorithm based on 3d discrete chaotic mapping.
An enhanced secure image chaotic cryptosystem has been proposed based on hybrid cmtlanczos algorithm. This correspondence considers the use of multiple chaotic dynamics and drive chaotic trajectory by both plaintext sequence and initial values of a chaotic map. Finally, recombine xl and xr to get the cipher image. An encryption scheme using chaotic map and genetic operations for wireless sensor networks 1. In their paper, the authors theoretically analyzed the algorithm and pointed out that the algorithm did not need to have the prior knowledge of the orbital distribution and one can select any chaotic model. A digital image encryption algorithm based on chaotic. Their scheme has a feature that a plaintext is encrypted by a keystream created from several onedimensional chaotic maps. Furthermore, a scheme for improving its security is proposed. Asachiimproved rsa encryption algorithm for increased. The exhibited rectangleogwo accomplished the least time to produce key which remained as an incentive to encrypt and decrypt the image.
A fast enhanced secure image chaotic cryptosystem based. Chaotic trajectory is used for encryption that is never reused for. Farag allahan efficient chaosbased feedback stream cipher ecbfsc for image. Center for cryptology and information security and. For the feistel structure used there are a certain vulnerabilities that can be. Wsns rely on wireless communications, which is by nature a broadcast medium. Citeseerx enhanced chaotic image encryption algorithm. Analyses and new designs of digital chaotic ciphers. Symmetric ciphers based on twodimensional chaotic maps.
For those attacks and security requirements, we propose a secure user authentication scheme against smartcard loss attack for wsns by using symmetric key techniques. The developed libraries classes can be used by any other software and application fig. Citeseerx enhanced 1d chaotic keybased algorithm for. An energy efficient encryption method for secure dynamic wsn. Pdf enhanced secure data transfer for wsn using chaotic. Citeseerx enhanced chaotic block cipher algorithm for.
An encryption scheme using chaotic map and genetic. We have achieved fast encryption and decryption along with privacy of images. An image cryptosystem based on pseudorandomly enhanced. Pdf a new chaotic encryption algorithm for wsn and.
In the recent past, many techniques have been developed for the construction of sbox using the chaotic and algebraic structures. Performance evaluation of block ciphers for wireless sensor networks. This paper proposed an efficient confusiondiffusion chaotic image cryptosystem based on a modified standard chaotic map. Enhanced chaotic stream cipher for wsns request pdf. They proposed a block cipher algorithm using chaotic tent map.
In addition, an encryption schema based on eec and chaotic map was. Enhanced secure data transfer for wsn using chaotic based encryption. A wsn is a network composed of active sensor nodes that have small volume, restricted storage space, and restricted communica. Enhanced 1d chaotic keybased algorithm for image encryption. A secure data routing schema for wsn using elliptic curve.
Citeseerx document details isaac councill, lee giles, pradeep teregowda. Twophase hybrid cryptography algorithm for wireless sensor networks. Wang and yu proposed a block cipher scheme based on dynamic sequences generated by multiple chaotic systems, which overcomes the problem of periodical degradation on random sequences due to computational precision. Enhanced blowfish algorithm for image encryption and. This paper presents a stream cipher named eloba enhanced lorenz based, for wireless sensor networks. On the application side, we apply the proposed discrete fractional map into image. Image encryption technology based on fractional two. Enhanced chaotic stream cipher for wsns ieee conference. Cryptanalysis and enhancements of image encryption using. After the quantum key is introduced, the quantum key is incorporated into the chaotic sequence by nonlinear. The result showed that the rectangleogwo algorithm enhanced the accuracy of di security for all the images lena, barbara, baboon, airplane and house when contrasted with existing algorithms. A block cipher based on a suitable use of the chaotic. It is the first time that four types of security requirements have been proposed for twofactor user authentication in wsns. Block diagram of enhanced chaotic image encryption based on bakers map 2.
However, this feature results in some weaknesses of the. As a security requirement, although the keys k1 and k2 are chosen at random, it is required that the hamming distance between them be. With a higher number of iterations, pixels are more randomly scattered. Abstract in this paper, we provide possible vulnerabilities of the algorithm set forth by mohamed amin et al. In the past few years, a number of image encryption algorithms based on chaotic maps have been proposed. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Sensor nodes in a wireless sensor network wsn are affected with resource. This paper proposes an enhanced substitutiondiffusion based image cipher using improved chaotic map. Pdf performance evaluation of block ciphers for wireless. The chaotic system developed here and the commonly used skipjack encryption were.
Recently, a color image encryption using combination of the 1d chaotic map has been proposed by pak et al. Image encryption using block cipher and chaotic sequences. In this article, we introduced a digital image encryption algorithm based on the chaotic mapping designed by xiong et al. For achieving security in wireless sensor networks wsns, cryptography plays an. Construction of new substitution boxes using linear. Center for cryptology and information security florida atlantic university, boca raton, florida 334310991. A secure user authentication scheme against smartcard. Cryptanalysis and improvement of a block cipher based on multiple chaotic systems jun he,1 haifeng qian,1 yuan zhou, 2 and zhibin li1 1 department of computer science, east china normal university, shanghai 200241, china 2 national computer network emergency response technical team coordination center of china, beijing 29, china. Cryptanalyzing and improving a novel color image encryption algorithm using rt enhanced chaotic tent maps. Despite the great efforts to secure wireless sensor network wsn, the. Enhanced chaotic block cipher algorithm for image cryptosystems vishnu g.
A fast enhanced secure image chaotic cryptosystem based on. A chaosbased image encryption algorithm with simple. Ieee international conference on availability, reliability and security, 2010. Enhanced chaotic stream cipher for wsns this paper presents a stream cipher named eloba enhanced lorenz based, for wireless sensor networks. In this paper we enhance the ckba algorithm threefold. We describe the eloba architecture and evaluate its security and performance comparing eloba with aes in counter mode.
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