01163cam a2200325 i 4500 0 0 udc 0 0 UL UL 2018-11-12 7 2 004.056.523 STA "2017" 00083560 2025-11-26 2025-11-13 2018-11-12 BK 97334 97333 20190808111121.0 160105s2016 maua 000 0 eng 9789332585225 004.056.523 STA "2017" Stallings, William 6461 Cryptography and network security principles and practice William Stallings. 7th ed Chennai Pearson 2019 xviii, 748p illustrations ; 24 cm Computer networks Security measures. Data encryption (Computer science) Coding theory. Computer security. BK