00249nam a2200109Ia 4500008004100000020001800041041000800059082001400067100001100081245003900092260000800131211209s9999    xx            000 0 und d  a9781259029882  aeng  a005.8 KAH  aKAHATE  aCRYPTOGRAPHY AND NETWORK SECURITY   bTMH