Randomness testing is a key tool to analyse the quality of true (physical) random and pseudo-random number generators. There wide variety tests that are designed for this purpose, i.e., goodness sequences used. These grouped in different sets called suites or batteries. The batteries must be such way form them independent, they have coverage, computationally efficient. One battery well-known EN...

We point to three types of potential vulnerabilities in the Bluetooth standard, version 1.0B. The first vulnerability opens up the system to an attack in which an adversary under certain circumstances is able to determine the key exchanged by two victim devices, making eavesdropping and impersonation possible. This can be done either by exhaustively searching all possible PINs (but without inte...

1. ABSTRACT Hidden copyright marks have been proposed as a solution for solving the illegal copying and proof of ownership problems in the context of multimedia objects. We show that the first generation of systems does not fulfil the expectation of users through a number of attacks that enable the information hidden by them to be removed or otherwise rendered unusable. We also propose a possib...