TY  - BOOK
AU  - Stallings, William  .
TI  - Crytography and network security: principles and practices / 
SN  - 81-203-3018-8
U1  - BV 
PY  - 2006///
CY  - New Delhi : 
PB  - Prentice-Hall of India Private Limited , 
KW  - Computer- Network Security
ER  -