Wagstaff, Samuel S. Cryptanalysis of number theorectic ciphers / Samuel S. Wagstaff, Jr - Boca Raton : Chapman & Hall/CRC, c2003 - xv, 318 p. ; 24 cm. - Computational mathematics series . Includes bibliographical references (p. 303-310) and index ISBN: 1584881534 Subjects--Topical Terms: Computer securityCryptographyNumber theory