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Security and Composition of Multi-party Cryptographic Protocols
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| Abstract: | We present general definitions of security for multiparty cryptographic protocols and show that, using these definitions, security is preserved under a natural composition method. The definitions follow the general paradigm of known definitions; yet some substantial modifications and simplifications are introduced. In particular, `black-box simulation' is no longer required. The composition method is essentially the natural `subroutine substitution' method suggested by Micali and Rogaway. We first present the general definitional approach. Next we consider several settings for multiparty protocols. These include the cases of non-adaptive and adaptive adversaries, as well as the information-theoretic and the computational models. |
BibTeX
@misc{eprint-1998-11314,
title={Security and Composition of Multi-party Cryptographic Protocols},
booktitle={IACR Eprint archive},
keywords={Multiparty cryptographic protocols, security of protocols, secure composition of protocols.},
url={http://eprint.iacr.org/1998/018},
note={Appeared in the THEORY OF CRYPTOGRAPHY LIBRARY and has been included in the ePrint Archive. canetti@watson.ibm.com 10500 received June 4th, 1998. Revised July 6, 1998. Re-revised January 3, 1999. Re-re-revised August 1999.},
author={Ran Canetti},
year=1998
}