TY  - BOOK
AU  - Stallings, William
TI  - Cryptography and network security: Principles and practices 
SN  - 9789332518773
AV  - Acc : 17984 - 17988 
U1  - 005.82 22
PY  - 2014///
CY  - New Delhi
PB  - Pearson Education
ER  -