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Lattice-Based Simulatable VRFs: Challenges and Future Directions

扬帆远航_df7c 2023-11-17 阅读 24

Lattice-based cryptography is evolving rapidly and is often employed to design cryptographic primitives that hold a great promise to be post-quantum resistant and can be employed in multiple application settings such as: e-cash, unique digital signatures, non-interactive lottery and others. In such

application scenarios, a user is often required to prove non-interactively the correct computation of

a pseudo-random function Fk(x) without revealing the secret key k used. Commitment schemes are

also useful in application settings requiring to commit to a chosen but secret value that could be revealed later. In this short paper, we provide our insights on constructing a lattice-based simulatable

verifiable random function (sVRF) using non interactive zero knowledge arguments and dual-mode

commitment schemes and we point out the main challenges that need to be addressed in order to

achieve it.

Keywords: Dual-Mode Commitment Scheme, Lattice-based Cryptography, Non Interactive Zero

Knowledge Arguments, Pseudo Random Functions, Verifiable Random Functions 

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