00582nam a2200193 a 450000500170000002000180001708200160003510000230005124500630007425000120013726000430014930000250019269000170021769000300023496400160026499700190028099900190029995200700031820251203111652.0  a9788177587746  a005.82bSTA  aStallings, William  aCryptography and network security principles and practices  a4th ed.  aNew DelhibPearson/Prentice Hallc2009  axvi,680p.c24cm.cPB  aCryptography  aComputer network security  bcdefg_  a165151 LIBSC C  c134191d134191  00104070aPUbPUd2010-10-25g292.00l0o005.82 STAp165151yBK