books.google.com - Cryptography is a vital technology that underpins the security of information in computer networks. This book presents a comprehensive introduction to the role that cryptography plays in providing information security for technologies such as the Internet, mobile phones, payment cards, and wireless local...http://books.google.com/books/about/Everyday_Cryptography.html?id=5DZ_vv-gl4oC&utm_source=gb-gplus-shareEveryday Cryptography