TY  - BOOK
AU  - Stallings, William 
TI  - Cryptography and network security: principles and practice 
SN  - 81-7808-605-0 
U1  - 005.82 WIL  
PY  - 2002///
CY  - Pearson education asia 
PB  - New Delhi 
KW  - SECURITY
ER  -