We consider the filter generator over GF (2) consisting of a linear feedback shift register of length k that generates a maximal length linear sequence of period 2 − 1 over GF (2) and a Boolean function of degree d that combines bits from one element in the shift register (considered as an element in GF (2)) and creates a binary output bit zt at any time t. We show how to extend a recent attack...

Semi-bent Boolean functions are interesting from a cryptographic standpoint, since they possess several desirable properties such as having low and flat Walsh spectrum, which is useful to resist linear cryptanalysis. In this paper, we consider the search of semi-bent through construction based on cellular automata (CA). particular, defines function by computing XOR all output cells in CA. Since...

In this paper, we present a semantic summarization algorithm that interfaces with the metadata and that works in compressed domain, in particular MPEG-1 and MPEG-2 videos. In enabling a summarization algorithm through high-level semantic content, we try to address two major problems: First, we present the facility provided in the DVA system that allows the semiautomatic creation of this metadat...

in order to study the relationship between random boolean sets and some explanatory variables, this paper introduces a propagation model. this model can be applied when corresponding poisson process of the boolean model is related to explanatory variables and the random grains are not affected by these variables. an approximation for the likelihood is used to find pseudo-maximum likelihood esti...