00489nam 2216BKA002660 450000100120000000300230001200500090003500800410004408200110008507200950009602000220019110000220021326000260023525000060026130000090026724500390027616BKA002660StarLibrary Marc Built20180430201711 ||||| |||||||||||amh  a005.82 aبرمجة الحاسوب, البرامج والبيانات - إخفاء البيانات a978-93-325-1877-3 aWilliam Stallings bLondon:pearson c2014 a6 a660P aCryptography and Net Work Security