caa a22 4500 475827058 CHVBK 20180406123831.0 cr unu---uuuuu 170329e20000101xx s 000 0 eng 10.1007/s001459910006 doi (NATIONALLICENCE)springer-10.1007/s001459910006 Canetti Ran IBM T.J. Watson Research Center, Yorktown Heights, P.O. Box 704, 10598, NY, U.S.A. aut Security and Composition of Multiparty Cryptographic Protocols [Elektronische Daten] [Ran Canetti] Abstract. : We present general definitions of security for multiparty cryptographic protocols, with focus on the task of evaluating a probabilistic function of the parties' inputs. We show that, with respect to these definitions, security is preserved under a natural composition operation. The definitions follow the general paradigm of known definitions; yet some substantial modifications and simplifications are introduced. The composition operation is the natural 's'ssubroutine substitution'' operation, formalized by Micali and Rogaway. We consider several standard settings for multiparty protocols, including the cases of eavesdropping, Byzantine, nonadaptive and adaptive adversaries, as well as the information-theoretic and the computational models. In particular, in the computational model we provide the first definition of security of protocols that is shown to be preserved under composition. International Association for Cryptologic Research, 2000 Key words. Multiparty cryptographic protocols, Security of protocols, Secure function evaluation, Composition of protocols nationallicence Journal of Cryptology Springer New York 13/1(2000-01-01), 143-202 0933-2790 13:1<143 2000 13 145 https://doi.org/10.1007/s001459910006 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s001459910006 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Canetti Ran IBM T.J. Watson Research Center, Yorktown Heights, P.O. Box 704, 10598, NY, U.S.A aut NATIONALLICENCE 773 0- Journal of Cryptology Springer New York 13/1(2000-01-01), 143-202 0933-2790 13:1<143 2000 13 145 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer