Gain the skills and knowledge needed to create effective datasecurity systemsThis book updates readers with all the tools, techniques, andconcepts needed to understand and implement data security systems.It presents a wide range of topics for a thorough understanding ofthe factors that affect the efficiency of secrecy, authentication,and digital signature schema. Most importantly, readers gainhands-on experience in cryptanalysis and learn how to createeffective cryptographic systems.The author contributed to the design and analysis of the DataEncryption Standard (DES), a widely used symmetric-key encryptionalgorithm. His recommendations are based on firsthand experience ofwhat does and does not work.Thorough in its coverage, the book starts with a discussion ofthe history of cryptography, including a description of the basicencryption systems and many of the cipher systems used in thetwentieth century. The author then discusses the theory ofsymmetric- and public-key cryptography. Readers not only discoverwhat cryptography can do to protect sensitive data, but also learnthe practical limitations of the technology. The book ends with twochapters that explore a wide range of cryptographyapplications.Three basic types of chapters are featured to facilitatelearning:* Chapters that develop technical skills* Chapters that describe a cryptosystem and present a method ofanalysis* Chapters that describe a cryptosystem, present a method ofanalysis, and provide problems to test your grasp of the materialand your ability to implement practical solutionsWith consumers becoming increasingly wary of identity theft andcompanies struggling to develop safe, secure systems, this book isessential reading for professionals in e-commerce and informationtechnology. Written by a professor who teaches cryptography, it isalso ideal for students.