TY  - BOOK
AU  - Stallings, William 
TI  - Cryptography and network security: principles and practice 
SN  - 978-81-775-8774-6 
U1  - 004.6 STA  
PY  - 2006///
CY  - Prentice hall 
PB  - New Delhi 
KW  - COMPUTER NETWORK
ER  -