00357nam a2200133 a 450000500170000002000180001708200150003510000210005024500610007125000120013226000340014430000260017850000190020420251203111949.0  a9788120322134  a005.8bKAU  aKaufman, Charlie  aNetwork security private communication in a public world  a2nd ed.  aNew DelhibPHI Learningc2002  axxvi,713p.c22cm.bPB  aincludes index