00833nam a22002411 4500 1/18042 011102s1998 enk 1 eng d 0138690170 18568 DLC GR-PeUP 005.8 ST Stallings, William. Cryptography and network security : principles and practice / William Stallings 2nd ed. Upper Saddle River: Prentice Hall, 1998 xvii, 569 p.: 25 cm. Include bibliographical references and index Computer networks Security measures. Data encryption (Computer science). Coding theory. Computer security. INST UNIPILB MAIN 20040709 005.8 ST 00137302 00137302 LOAN 0 1 /webopac/covers/01/18568_0138690170.jpg