SHYAMALA CRYPTOGRAPHY AND SECURITY - WILEY INDIA PVT. LTD. 2011 - 529 ISBN: 9788126522859 Subjects--Topical Terms: DATA SECURITY [ Ciphers, Computer Viruses, Trojan Horses, Worms, Data Backup and Recovery, Computer Security, Network Security] Dewey Class. No.: 005.8 Q1 SHY