00401nam a2200145 a 450000500170000000800410001704100080005808200110006610000170007724500540009425000120014826400700016030000160023065000090024620260717092211.0260717s2009    ii            000 0 eng d  aeng04a005.821 aKahate, Atul10aCryptography and Network Security /cKahate, Atul  a2nd ed. 1aNew Delhi :bTata McGraw Hill Publishing Company Limited,cc2009.  axxvi,541 p. 4aI.T.