Paraplegia in Kangaroos

Catching Kangaroos in Function Fields Catching Kangaroos in Function Fields

Catching Kangaroos in Function Fields

1. Introduction In this paper we generalize the parallelized lambda method for computing invariants in real qua-dratic function elds. A basic such invariant is the regulator, which plays an important role in cryptosystems based on real quadratic function elds. For example, in the key-exchange protocol by Scheidler, Stein and Williams SSW96], the regulator provides a measure for the key space; m...

Kangaroos in Side-Channel Attacks

Side-channel attacks are a powerful tool to discover the cryptographic secrets of a chip or other device but only too often do they require too many traces or leave too many possible keys to explore. In this paper we show that for side channel attacks on discrete-logarithmbased systems significantly more unknown bits can be handled by using Pollard’s kangaroo method: if b bits are unknown then ...

Monkeys, Kangaroos, and N

We examine some points of the rationale underlying the choice of priors for MAXENT image reconstruction. The original combinatorial (monkey) and exchangeability (kangaroo) approaches each contains important truth. Yet each also represents in a sense an extreme position which ignores the truth in the other. The models of W. E. Johnson, I. J. Good, and S. Zabell provide a continuous interpolation...

Paraplegia.

Nurses caring for people who have sustained an injury resulting in paraplegia must have an understanding of both the psychological and physical effects. This Update examines the nurse's role in preparing the patient for the future.