00367nam a2200121Ia 450000500170000000800410001702000180005808200180007610000220009424500640011626000550018030000100023520260205064210.0260111s9999||||xx |||||||||||||| ||und||  a9789332585225  a005.82  St18C  aStallings,William 0aCryptography and network security : principles and practice  aNoidabPearson India Education Services Pub.c2018  a766p.