TY - BOOK AU - Delfs, Hans AU - Knebl, Helmut TI - Introduction to cryptography : principles and applications T2 - Information security and cryptography : texts and monographs SN - 3-540-42278-1 U1 - 005.82 23rd. PY - 2002/// CY - Berlin PB - Springer KW - Cryptography UR - www.springer.de ER -