TY  - BOOK
AU  - .Gupta,Kailash N.
AU  - Agarwala,Kamlesh N.
AU  - Agaraeala,Prateek A.
TI  - Digital Signature :  : Net Work Security Practice 
SN  - 8120325990
U1  - 005.8 
PY  - 2005///.
CY  - New Delhi : 
PB  - Prentice-Hall Of India, 
ER  -