This book is a clear and informative introduction to cryptography and data protection - subjects of considerable social and political importance. It explains wh

A clear and informative introduction to the science of codebreaking, explaining what algorithms do, how they are used, the risks associated with using them, and

Cryptography is a part of everyday life, with most of us being daily users of it, often without knowing. In this second edition, Sean Murphy and Rachel Player e

There is a companion web site asssociated with the book (http://vsicomputer.wordpress.com/). It contains chapter summaries, links to relevant material and posts

Number theory is the branch of mathematics that is primarily concerned with the counting numbers. Of particular importance are the prime numbers, the 'building