TY  - BOOK
AU  - Piper, Fred
AU  - Murphy, Sean
TI  - Cryptography : a very short introduction
SN  - 9780192803153
U1  - G 652.8 
PY  - 2002///
CY  - Oxford 
PB  - Oxford University Press, 2002.
KW  - Cryptography
ER  -