In this paper, we propose a new one-time one-key encryption algorithm based on the ergodicity of a skew tent chaotic map. We divide the chaotic trajectory into sub-intervals and map them to integers, and use this sche...In this paper, we propose a new one-time one-key encryption algorithm based on the ergodicity of a skew tent chaotic map. We divide the chaotic trajectory into sub-intervals and map them to integers, and use this scheme to encrypt plaintext and obtain ciphertext. In this algorithm, the plaintext information in the key is used, so different plaintexts or different total numbers of plaintext letters will encrypt different ciphertexts. Simulation results show that the performance and the security of the proposed encryption algorithm can encrypt plaintext effectively and resist various typical attacks.展开更多
Generalized synchronization between two diverse structures of chaotic systems possesses significance in the research of synchronization.We propose an approach based on the Lyapunov stability theory to study it.This me...Generalized synchronization between two diverse structures of chaotic systems possesses significance in the research of synchronization.We propose an approach based on the Lyapunov stability theory to study it.This method can be used widely.Numerical examples are given to demonstrate the effectiveness of this approach.展开更多
We extend a class of a one-dimensional smooth map.We make sure that for each desired interval of the parameter the map’s Lyapunov exponent is positive.Then we propose a novel parameter perturbation method based on th...We extend a class of a one-dimensional smooth map.We make sure that for each desired interval of the parameter the map’s Lyapunov exponent is positive.Then we propose a novel parameter perturbation method based on the good property of the extended one-dimensional smooth map.We perturb the parameter𝑟in each iteration by the real number xi generated by the iteration.The auto-correlation function and NIST statistical test suite are taken to illustrate the method’s randomness finally.We provide an application of this method in image encryption.Experiments show that the pseudo-random sequences are suitable for this application.展开更多
We propose a new communication system which is able to separate noise successfully by using independent component analysis(ICA),and a parameter modulation method based on a Lorenz chaotic system is employed for recove...We propose a new communication system which is able to separate noise successfully by using independent component analysis(ICA),and a parameter modulation method based on a Lorenz chaotic system is employed for recovery of the source signals.The results indicate that our proposed secure communication has robustness against noise.展开更多
基金supported by the National Natural Science Foundation of China (Grant Nos.61173183,60973152,and 60573172)the Superior University Doctor Subject Special Scientific Research Foundation of China (Grant No.20070141014)the Natural Science Foundation of Liaoning Province,China (Grant No.20082165)
文摘In this paper, we propose a new one-time one-key encryption algorithm based on the ergodicity of a skew tent chaotic map. We divide the chaotic trajectory into sub-intervals and map them to integers, and use this scheme to encrypt plaintext and obtain ciphertext. In this algorithm, the plaintext information in the key is used, so different plaintexts or different total numbers of plaintext letters will encrypt different ciphertexts. Simulation results show that the performance and the security of the proposed encryption algorithm can encrypt plaintext effectively and resist various typical attacks.
基金by the National Natural Science Foundation of China under Grant Nos 60573172 and 60973152the Specialized Research Fund for the Doctoral Program of Higher Education of China under Grant No 20070141014+1 种基金the Natural Science Foundation of Liaoning Province under Grant No 20082165the Minority Nationality Technology Talent Cultivation Plan of Xinjiang under Grant No 201123116.
文摘Generalized synchronization between two diverse structures of chaotic systems possesses significance in the research of synchronization.We propose an approach based on the Lyapunov stability theory to study it.This method can be used widely.Numerical examples are given to demonstrate the effectiveness of this approach.
基金by the National Natural Science Foundation of China under Grant Nos 60573172 and 60973152the Superior University Doctor Subject Special Scientific Research Foundation of China(No 20070141014)the Natural Science Foundation of Liaoning Province(No 20082165).
文摘We extend a class of a one-dimensional smooth map.We make sure that for each desired interval of the parameter the map’s Lyapunov exponent is positive.Then we propose a novel parameter perturbation method based on the good property of the extended one-dimensional smooth map.We perturb the parameter𝑟in each iteration by the real number xi generated by the iteration.The auto-correlation function and NIST statistical test suite are taken to illustrate the method’s randomness finally.We provide an application of this method in image encryption.Experiments show that the pseudo-random sequences are suitable for this application.
基金Supported by the National Natural Science Foundation of China under Grant Nos 60973152 and 60573172the Superior University Doctor Subject Special Scientific Research Foundation of China under Grant No 20070141014the Natural Science Foundation of Liaoning Province under Grant No 20082165.
文摘We propose a new communication system which is able to separate noise successfully by using independent component analysis(ICA),and a parameter modulation method based on a Lorenz chaotic system is employed for recovery of the source signals.The results indicate that our proposed secure communication has robustness against noise.
