00588 a2200181 4500 3540422781 Library of Congress English Delfs, Hans. Introduction to cryptography : principles and applications Hans Delfs, Helmut Knebl. Berlin ; New York : Springer, c2002. xiv, 310 p. ; 24 cm. Information security and cryptography Computer security. Cryptography. Data encryption (Computer science) Knebl, Helmut. BK 005.82 DEL ddc 9587 9587 0 0 0 0 NFIC CL CL AI 2003-02-22 Pak Book Corporation 2798.50 3 005.82 DEL SEECS003131 2025-05-30 2024-09-15 2017-01-05 BK