00389nam a2200133Ia 4500008004100000041001200041082001900053100002300072245006400095250001200159260003600171300001200207650003600219231217s9999    xx            000 0 und d  aEnglish  a001.64404  STA  aStallings, William 0aCryptography and network security : principles and practice  a3rd ed.  c2003bPearson Education aDelhi  axiv+681  aCryptography,network,security,: