00573nam 2279781 450000100060000000300230000600500090002900800410003808200100007907200500008902000180013910000220015726000390017924500620021865000500028065000370033065000260036779781StarLibrary Marc Built20180430201711 ||||| |||||||||||amh  a005.8 aconfidentiality using conventional encryption a0-13-180050-7 aWilliam Stallings bprentice hall international c1995 anetwork and internetwork security principles and practice aconfidentiality using conventional encryption ainternetwork security principles apublic-key cryptology