TY  - BOOK
AU  - Barr,Thomas H.
TI  - Invitation to cryptology
SN  - 0130889768
U1  - 652.8 
PY  - 2002///
CY  - Upper Saddle River, N.J.
PB  - Prentice Hall
KW  - Ciphers
KW  - Cryptography
N1  - Includes bibliographical references (p. 363-369) and index
ER  -