vu que les conditions actuelles du monde nécessitent l’unicité des cultures et des sociétés humaines et sollicitent une ferme relation entre les différentes civilisations, pour mieux pouvoir se communiquer et se comprendre les uns et les autres, il nous est  fort utile de trouver un langage commun qui ne pourrait être que le langage du cœur. c’est d’ailleurs ce langage qui nous a guidés vers un...

In the guessing secrets problem defined by Chung, Graham and Leighton [9], player B has to unveil a set of k > 1 secrets that player A has chosen from a pool of N secrets. To discover the secrets, player B is allowed to ask a series of boolean questions. For each question asked, A can adversarially choose one of the secrets but once he has made his choice he must answer truthfully. In this pape...

Secure sketches are useful in extending cryptographic schemes to biometric data since they allow recovery of fuzzy secrets under inevitable noise. In practice, secrets derived from biometric data are seldom used alone, but typically employed in a multi-factor or a multimodality setting where multiple secrets with different roles and limitations are used together. To handle multiple secrets, we ...

We analyze some specific aspects concerning conditional orderings and relations among them. To this purpose we define a suitable concept of reversed conditional ordering and prove some related results. In particular we aim to compare the univariate stochastic orderings ≤st, ≤hr, and ≤lr in terms of differences among different notions of conditional orderings. Some applications of our result to ...

In the change of the orientation one has to reverse the sequence (the operation introduced in [7]) and to change the second restriction one has to rotate the sequence (the operation introduced in [26]). The goal of the paper is to prove, mostly simple, facts about the relationship between properties and attributes of the finite sequence and its rotation (similar results about reversing had been...

This paper reports first steps towards a formal model for strategy leakage. We generalize the representation of prior adversarial knowledge from a distribution on secrets to a distribution on strategies for generating secrets, which we call an environment. Applying information-theoretic techniques to environments allows us to disentangle the information leakage about a secret from the leakage a...