00475nam a2200157Ia 4500008004100000020001400041082001400055100002300069245006400092250000800156260003800164300002500202500001900227600002100246650005000267240925s9999    xx            000 0 und d  a139738193  a005.8 STA  aStallings, William 0aCryptography and Network Security: principles and practice   a2nd  aNew Delhi:bPrentice Hallc,1999.  ax,638p.bNAfPirated  aIncludes Index  aComputer Science  aComputer science, information & general works