00499nam a22001217a 4500020002400000082001500024100001700039245005400056260004100110300003400151500002000185650017200205  a9788190691970 (pbk)  a005.8bGUP  aGupta, Sunil  aIntroduction to cryptography and network security  aNew DelhibS.K. Kataria & Sonsc2013  axii, 209 p.b: ill.c; 24 cm.  aIncludes index.  aComputer scienceaCryptographyvSecurity attacksvNetwork securityvSecurity mechanismvCaesar ciphervWeb securityvComputer networksvSecurity measuresvRC2vRC5vFC