00617nam a22001937a 450000500170000001000150001702000260003203500130005803700130007110000170008424500560010125000110015726000400016827000500020830000340025850000500029265000420034265000390038420130612121742.0  aENG-107372  a9781259029882c450.00  aEN-90905  bDBAD/PUB  aKahate, Atul  aCryptography and network security /cby Atul Kahate  a3rd ed  aNew DelhibTata Mc Graw Hill c2013  aP-24, Green Park ExtensionbNew Delhie110016  axxii, 501p.:bill.c24cm(pbk)  aIncludes bibliographical references and index  aComputer networksx Security measures  aData encryption (Computer science)