00314nam a2200097Ia 450000500170000000800410001708200170005810000220007524500640009726000550016120260325112145.0260325s9999||||xx |||||||||||||| ||und||  a005.82 St18C  aStallings,William 0aCryptography and network security : principles and practice  aNoidabPearson India Education Services Pub.c2018