TY  - BOOK
AU  - Stallings,William
TI  - Cryptography and network security: principles and practice 
SN  - 9780137056323
AV  - TK5105.59 .S713 2011
PY  - 2011///
CY  - Boston
PB  - Prentice Hall
KW  - Computer networks
KW  - Security measures
KW  - Data encryption
ER  -