Stallings, William Cryptography and network security principles and practice / William Stallings. - 4th ed. - New Delhi: Prientice-Hall, c2005. - xvi, 680p.: ill.;, figs.;, tables.;, maps.; 21 cm. Includes index. Dept. of Business Adnimistration Subjects--Topical Terms: Mobile data Dewey Class. No.: 652 / STC