00289nam a2200109Ia 450000500170000000800410001708200170005810000180007524500380009326000390013130000090017020260205054308.0260111s9999||||xx |||||||||||||| ||und||  a005.82  K12C  aKahate , Atul 0aCryptography and network security  aNew DelhibTata Mc graw-hillc2004  a435p