Welcome to the resource topic for 2022/907
Title:
A New Approach to Post-Quantum Non-Malleability
Authors: Xiao Liang, Omkant Pandey, and Takashi Yamakawa
Abstract:We provide the first \mathit{constant}-\mathit{round} construction of post-quantum non-malleable commitments under the minimal assumption that \mathit{post}-\mathit{quantum} \mathit{one}-\mathit{way} \mathit{functions} exist. We achieve the standard notion of non-malleability with respect to commitments. Prior constructions required \Omega(\log^*\lambda) rounds under the same assumption. We achieve our results through a new technique for constant-round non-malleable commitments which is easier to use in the post-quantum setting. The technique also yields an almost elementary proof of security for constant-round non-malleable commitments in the classical setting, which may be of independent interest. As an application, when combined with existing work, our results yield the first constant-round post-quantum secure multiparty computation under the \mathit{polynomial} hardness of quantum fully-homomorphic encryption and quantum learning with errors.
ePrint: https://eprint.iacr.org/2022/907
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 .