In this work, we show how to obtain significant improvements by using a "real" double base number system and performing the scalar multiplication using a modified version of Yao's algorithm.

The ability to build technologies that harness quantum physics would have a huge impact on cryptography, rendering certain widely used cryptographic tools obsolete, and also offering fundamentally new ones. I will discuss the impact of quantum information processing on information security.

Drawing from a variety of disciplines including psychology, biology and  computer science, the "big picture" of data used is explored. Using this picture, a better understanding can be gained of the real obstacles to "secure computing".

One of the important and most visible applications of modern information security is mail. The talk covers the history and development of ideas in using modern information security to payments in mailing and similar applications (e.g. sin taxes).

This talk speculates about the potential quality of new Digital Rights Management (DRM) systems where the goal is to protect the copyright of content producers on the internet.  In this new setting we have serious systemic, operational and algorithmic advantages that we did not have in the previous ("classic") round.  We give the economical analysis of counterfeiting in the classic DRM.