Download or read book Cryptography: A Very Short Introduction written by Fred Piper and published by Oxford Paperbacks. This book was released on 2002-05-30 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 why governments should be concerned.