TY - BOOK AU - Beth T ed. ED - European Institute for System Security Workshop( 1991 : Oberwolfach ) ED - European Institute for System Security Workshop TI - Public-key cryptology : state of the art and future directions : proceedings U1 - 5.82 PY - 1992/// CY - Berlin PB - Springer Verlag KW - Computer security KW - Cryptology ER -