A nonlinear substitution operation of bytes is the main strength factor of the Advanced Encryption Standard (AES) and other modern cipher systems. In this paper we have presented a new simple algorithm to generate key-dependent S-boxes and inverse S-boxes for block cipher systems. The quality of this algorithm was tested by using NIST tests, and changing only one bit of the secret key to genera...

This paper gives an overview of how boxes are created in PWGL. PWGL is a visual language based on Common Lisp, CLOS and OpenGL. PWGL boxes can be categorized as follows. Simple boxes define the basic interface between PWGL and its baselanguages Common Lisp and CLOS. Visual editors constitute another important subcategory of PWGL boxes. Finally, more complex boxes can be used to create PWGL appl...

Abstract We show that, for every set of $n$ points in the $d$-dimensional unit cube, there is an empty axis-parallel box volume at least $\Omega (d/n)$ as $n\to \infty $ and $d$ fixed. In opposite direction, we give a construction without $O(d^2\log d/n)$. These improve on previous best bounds (\log d/n)$ $O(2^{7d}/n)$, respectively.