00257nam a2200109Ia 4500008004100000020001800041082001000059100001800069245003800087260001400125300000800139240801s9999    xx            000 0 und d  a9789380016801  bJAI-C  aJAIN DR. V.K. 0aCRYPTOGRAPHY AND NETWORK SECURITY  aNEW DELHI  a584