In this paper, first, we investigate a novel one-dimensional logistic-PWLCM（LP） modulation map which is derived from the logistic and PWLCM maps. Second, we propose a novel PCLML spatiotemporal chaos in pseudo-rando...In this paper, first, we investigate a novel one-dimensional logistic-PWLCM（LP） modulation map which is derived from the logistic and PWLCM maps. Second, we propose a novel PCLML spatiotemporal chaos in pseudo-random coupling method that can accelerate the system behavior of the fully spatial chaos. Here, because the better chaotic properties include a wide range of parameter settings and better ergodicity than a logistic map, the LP is used in PCLML as f（x）. The Kolmogorov–Sinai entropy density and universality and the bifurcation diagram are employed to investigate the chaotic behaviors of the proposed PCLML model. Finally, we apply the LP and PCLML chaotic systems to image encryption to improve the effectiveness and security of the encryption scheme. By combining self-generating matrix model M and dynamic substitution box（S-Box） methods, we design a new image encryption algorithm. Numerical simulations and security analysis have been carried out to demonstrate that the proposed algorithm has a high security level and can efficiently encrypt several different kinds of images into random-like images.展开更多
IoT devices have been widely used with the advent of 5G.These devices contain a large amount of private data during transmission.It is primely important for ensuring their security.Therefore,we proposed a lightweight ...IoT devices have been widely used with the advent of 5G.These devices contain a large amount of private data during transmission.It is primely important for ensuring their security.Therefore,we proposed a lightweight block cipher based on dynamic S-box named DBST.It is introduced for devices with limited hardware resources and high throughput requirements.DBST is a 128-bit block cipher supporting 64-bit key,which is based on a new generalized Feistel variant structure.It retains the consistency and significantly boosts the diffusion of the traditional Feistel structure.The SubColumns of round function is implemented by combining bit-slice technology with subkeys.The S-box is dynamically associated with the key.It has been demonstrated that DBST has a good avalanche effect,low hardware area,and high throughput.Our S-box has been proven to have fewer differential features than RECTANGLE S-box.The security analysis of DBST reveals that it can against impossible differential attack,differential attack,linear attack,and other types of attacks.展开更多
基金Project supported by the National Natural Science Foundation of China(Grant Nos.61672124,61370145,and 61173183)the Password Theory Project of the13th Five-Year Plan National Cryptography Development Fund,China(Grant No.MMJJ20170203)+1 种基金the Program for New Century Excellent Talents in Fujian Province Universitythe Natural Science Foundation of Fujian Province of China(Grant No.2018J01100)
文摘In this paper, first, we investigate a novel one-dimensional logistic-PWLCM（LP） modulation map which is derived from the logistic and PWLCM maps. Second, we propose a novel PCLML spatiotemporal chaos in pseudo-random coupling method that can accelerate the system behavior of the fully spatial chaos. Here, because the better chaotic properties include a wide range of parameter settings and better ergodicity than a logistic map, the LP is used in PCLML as f（x）. The Kolmogorov–Sinai entropy density and universality and the bifurcation diagram are employed to investigate the chaotic behaviors of the proposed PCLML model. Finally, we apply the LP and PCLML chaotic systems to image encryption to improve the effectiveness and security of the encryption scheme. By combining self-generating matrix model M and dynamic substitution box（S-Box） methods, we design a new image encryption algorithm. Numerical simulations and security analysis have been carried out to demonstrate that the proposed algorithm has a high security level and can efficiently encrypt several different kinds of images into random-like images.
文摘IoT devices have been widely used with the advent of 5G.These devices contain a large amount of private data during transmission.It is primely important for ensuring their security.Therefore,we proposed a lightweight block cipher based on dynamic S-box named DBST.It is introduced for devices with limited hardware resources and high throughput requirements.DBST is a 128-bit block cipher supporting 64-bit key,which is based on a new generalized Feistel variant structure.It retains the consistency and significantly boosts the diffusion of the traditional Feistel structure.The SubColumns of round function is implemented by combining bit-slice technology with subkeys.The S-box is dynamically associated with the key.It has been demonstrated that DBST has a good avalanche effect,low hardware area,and high throughput.Our S-box has been proven to have fewer differential features than RECTANGLE S-box.The security analysis of DBST reveals that it can against impossible differential attack,differential attack,linear attack,and other types of attacks.
