This is a study of some of the elementary statistical properties of the bitwise exclusive or of two maximum period feedback with carry shift register sequences. We obtain condition under which the resulting sequences has the maximum possible period, and we obtain bounds on the variation in the distribution of blocks of a fixed length. This may lead to improved design of stream ciphers using FCS...

Differentially 4-uniform permutations on F22k with high nonlinearity are often chosen as Substitution boxes in both block and stream ciphers. Recently, Qu et al. introduced a class of functions, which are called preferred functions, to construct a lot of infinite families of such permutations [14]. In this paper, we propose a particular type of Boolean functions to characterize the preferred fu...

Event processing in the form of ECA rules has been researched extensively from the situation monitoring viewpoint to detect changes in a timely manner and to take appropriate actions. Several event specification languages and processing models have been developed, analyzed, and implemented. More recently, data stream processing has been receiving a lot of attention to deal with applications tha...

New forms of commerce require novel methods of management. Dynamic pricing is a new way to get a increase in the buyers interest and improve their customer experience. As it is a complex procedure to take into account elaborate algorithms to generate and distribute new prices to products, in this paper, a system for autonomous price management and distribution is presented. The use of ECA rules...

State-of-the-art Complex Event Processing technology (CEP),while effective for pattern query execution, is limited in itscapability of reacting to opportunities and risks detected bypattern queries. Especially reactions that affect the queryresults in turn have not been addressed in the literature.We propose to tackle these unsolved problems by embed-ding active rule sup...

We present a stream cipher based on a chaotic dynamical system. Using a chaotic trajectory sampled under certain rules in order to avoid any attempt to reconstruct the original one, we create a binary pseudo-random keystream that can only be exactly reproduced by someone that has fully knowledge of the communication system parameters formed by a transmitter and a receiver and sharing the same i...

Differentially 4-uniform permutations on F22k with high nonlinearity are often chosen as Substitution boxes in both block and stream ciphers. Recently, Qu et al. introduced a class of functions, which are called preferred functions, to construct a lot of infinite families of such permutations [14]. In this paper, we propose a particular type of Boolean functions to characterize the preferred fu...

In this paper, a novel image encryption scheme is proposed based on combination of pixel shuffling and W7. Due to sensitivity to initial conditions, chaotic maps have a good potential for designing dynamic permutation map. So a chaotic Henon map is used to generate permutation matrix. An external secret key is used to derive the initial conditions for the chaotic map and W7 secret key. Pixel sh...

—There is evidence that actively moving salmonids are of lower condition than the general population, and they are sometimes regarded as inferior to resident fish. However, little information exists on the permanence of this attribute. We used mark–recapture and two-way traps to determine whether there are differences in the condition and growth of mobile and resident Bonneville cutthroat trout...