Computer security and cryptography / Alan G. Konheim.

Includes bibliographical references and index.

aperitifs -- columnar transposition -- monoalphabetic substitution -- polyalphabetic substitution -- statistical tests -- the emergence of cipher machines -- the japanese cipher machines -- stream ciphers -- block-ciphers: lucifer, des, and aes -- the paradigm of public key cryptography -- the knapsack cryptosystem -- the rsa cryptosystem -- prime numbers and factorization -- the discrete logarithm problem -- elliptic curve cryptography -- key exchange in a network -- digital signatures and authentication -- applications of cryptography -- cryptographic patents.

Gain the skills and knowledge needed to create effective data security systems This book updates readers with all the tools, techniques, and concepts needed to understand and implement data security systems. It presents a wide range of topics for a thorough understanding of the factors that affect the efficiency of secrecy, authentication, and digital signature schema. Most importantly, readers gain hands-on experience in cryptanalysis and learn how to create effective cryptographic systems. The author contributed to the design and analysis of the Data Encryption Standard (DES), a widely used symmetric-key encryption algorithm. His recommendations are based on firsthand experience of what does and does not work. Thorough in its coverage, the book starts with a discussion of the history of cryptography, including a description of the basic encryption systems and many of the cipher systems used in the twentieth century. The author then discusses the theory of symmetric- and public-key cryptography. Readers not only discover what cryptography can do to protect sensitive data, but also learn the practical limitations of the technology. The book ends with two chapters that explore a wide range of cryptography applications

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