Using mathematical tools from number theory and finite fields, Applied Algebra: Codes, Ciphers, and Discrete Algorithms, Second Edition presents practical methods for solving problems in data security and data integrity.It is designed for an applied algebra course for students who have had prior classes in abstract or linear algebra. While the content has been reworked and improved, this edition continues to cover many algorithms that arise in cryptography and error-control codes. New to the Second Edition Downloadable resources containing an interactive version of the book that is powered by Scientific Notebook�, a mathematical word processor and easy-to-use computer algebra system New appendix that reviews prerequisite topics in algebra and number theory Double the number of exercises Instead of a general study on finite groups, the book considers finite groups of permutations and develops just enough of the theory of finite fields to facilitate construction of the fields used for error-control codes and the Advanced Encryption Standard. It also deals with integers and polynomials. Explaining the mathematics as needed, this text thoroughly explores how mathematical techniques can be used to solve practical problems. About the Authors Darel W. Hardy is Professor Emeritus in the Department of Mathematics at Colorado State University. His research interests include applied algebra and semigroups. Fred Richman is a professor in the Department of Mathematical Sciences at Florida Atlantic University. His research interests include Abelian group theory and constructive mathematics. Carol L. Walker is Associate Dean Emeritus in the Department of Mathematical Sciences at New Mexico State University. Her research interests include Abelian group theory, applications of homological algebra and category theory, and the mathematics of fuzzy sets and fuzzy logic. Additional ISBNs 1420071424, 0429184611, 9781420071429, 9780429184611, 1420071432, 1439894698, 1439891850, 9781420071436, 9781439894699, 9781439891858Applied Algebra: Codes, Ciphers and Discrete Algorithms, Second Edition 2nd Edition is written by Darel W. Hardy; Fred Richman; Carol L. Walker and published by Chapman & Hall. ISBNs for Applied Algebra are 9781420071436, 1420071432 and the print ISBNs are 9781420071429, 1420071424. Additional ISBNs include 1420071424, 0429184611, 9781420071429, 9780429184611, 1420071432, 1439894698, 1439891850, 9781420071436, 9781439894699, 9781439891858.