Introduction to Cryptography with Open-Source Software

Alasdair McAndrew

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May 24, 2011 by CRC Press
Textbook - 461 Pages - 58 B/W Illustrations
ISBN 9781439825709 - CAT# K11232
Series: Discrete Mathematics and Its Applications

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Features

  • Teaches the key concepts in a practical way via Sage, an open-source algebraic mathematics software
  • Includes examples that can be implemented on any modern computer
  • Enables students to run their own programs and develop a deep and solid understanding of the mechanics of cryptography
  • Takes students through the necessary mathematics gradually, introducing more advanced concepts one chapter at a time
  • Provides exercises at the end of every chapter

Summary

Once the privilege of a secret few, cryptography is now taught at universities around the world. Introduction to Cryptography with Open-Source Software illustrates algorithms and cryptosystems using examples and the open-source computer algebra system of Sage. The author, a noted educator in the field, provides a highly practical learning experience by progressing at a gentle pace, keeping mathematics at a manageable level, and including numerous end-of-chapter exercises.

Focusing on the cryptosystems themselves rather than the means of breaking them, the book first explores when and how the methods of modern cryptography can be used and misused. It then presents number theory and the algorithms and methods that make up the basis of cryptography today. After a brief review of "classical" cryptography, the book introduces information theory and examines the public-key cryptosystems of RSA and Rabin’s cryptosystem. Other public-key systems studied include the El Gamal cryptosystem, systems based on knapsack problems, and algorithms for creating digital signature schemes.

The second half of the text moves on to consider bit-oriented secret-key, or symmetric, systems suitable for encrypting large amounts of data. The author describes block ciphers (including the Data Encryption Standard), cryptographic hash functions, finite fields, the Advanced Encryption Standard, cryptosystems based on elliptical curves, random number generation, and stream ciphers. The book concludes with a look at examples and applications of modern cryptographic systems, such as multi-party computation, zero-knowledge proofs, oblivious transfer, and voting protocols.

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