If you've ever made a secure purchase with your credit card over the Internet, then you have seen cryptography, or "crypto", in action. From Stephen Levy—the author who made "hackers" a household word—comes this account of a revolution that is already affecting every citizen in the twenty-first century. Crypto tells the inside story of how a group of "crypto rebels"—nerds and visionaries turned freedom fighters—teamed up with corporate interests to beat Big Brother and ensure our privacy on the Internet. Levy's history of one of the most controversial and important topics of the digital age reads like the best futuristic fiction.
Bestselling author Bruce Schneier offers his expert guidance on achieving security on a network.
Internationally recognized computer security expert Bruce Schneier offers a practical, straightforward guide to achieving security throughout computer networks. Schneier uses his extensive field experience with his own clients to dispel the myths that often mislead IT managers as they try to build secure systems. This practical guide provides readers with a better understanding of why protecting information is harder in the digital world, what they need to know to protect digital information, how to assess business and corporate security needs, and much more.
* Walks the reader through the real choices they have now for digital security and how to pick and choose the right one to meet their business needs
* Explains what cryptography can and can't do in achieving digital security
The National Security Agency is the world’s most powerful, most far-reaching espionage. Now with a new afterword describing the security lapses that preceded the attacks of September 11, 2001, Body of Secrets takes us to the inner sanctum of America’s spy world. In the follow-up to his bestselling Puzzle Palace, James Banford reveals the NSA’s hidden role in the most volatile world events of the past, and its desperate scramble to meet the frightening challenges of today and tomorrow.
Here is a scrupulously documented account–much of which is based on unprecedented access to previously undisclosed documents–of the agency’s tireless hunt for intelligence on enemies and allies alike. Body of secrets is a riveting analysis of this most clandestine of agencies, a major work of history and investigative journalism.
Continue reading “Body of Secrets: Anatomy of the Ultra-Secret National Security Agency”
The cryptosystems based on the Integer Factorization Problem (IFP), the Discrete Logarithm Problem (DLP) and the Elliptic Curve Discrete Logarithm Problem (ECDLP) are essentially the only three types of practical public-key cryptosystems in use. The security of these cryptosystems relies on the three infeasible number-theoretic problems; no polynomial-time algorithms exist for these three problems. However, quantum polynomial-time algorithms for IFP, DLP and ECDLP do exist, provided that a practical quantum computer exists.
Quantum Attacks on Public-Key Cryptosystems introduces the basic concepts and ideas of quantum computing and quantum computational complexity. The book discusses quantum algorithms for IFP, DLP and ECDLP, based on Shor's seminal work. It also presents some possible alternative post-quantum cryptosystems to replace the IFP, DLP and ECDLP based cryptosystems.
This book is intended for graduate-level students and researchers in computing science, mathematics and digital communications as a second text or reference book. Cryptographers and professionals working in quantum computing, cryptography and network security will find this book a valuable asset.