Welcome to the resource topic for 2004/139
Title:
New Notions of Security: Achieving Universal Composability without Trusted Setup
Authors: Manoj Prabhakaran, Amit Sahai
Abstract:We propose a modification to the framework of Universally Composable (UC) security [Canetti’01]. Our new notion, involves comparing the protocol executions with an ideal execution involving ideal functionalities (just as in UC-security), but allowing the environment and adversary access to some super-polynomial computational power. We argue the meaningfulness of the new notion, which in particular subsumes many of the traditional notions of security.
We generalize the Universal Composition theorem of [Canetti’01] to the new setting. Then under new computational assumptions, we realize secure multi-party computation (for static adversaries) without a common reference string or any other set-up assumptions, in the new framework. This is known to be impossible under the UC framework.
ePrint: https://eprint.iacr.org/2004/139
See all topics related to this paper.
Feel free to post resources that are related to this paper below.
Example resources include: implementations, explanation materials, talks, slides, links to previous discussions on other websites.
For more information, see the rules for Resource Topics .