Welcome to the resource topic for 2023/616
Title:
vetKeys: How a Blockchain Can Keep Many Secrets
Authors: Andrea Cerulli, Aisling Connolly, Gregory Neven, Franz-Stefan Preiss, Victor Shoup
Abstract:We propose a new cryptographic primitive called “verifiably encrypted threshold key derivation” (vetKD) that extends identity-based encryption with a decentralized way of deriving decryption keys. We show how vetKD can be leveraged on modern blockchains to build scalable decentralized applications (or “dapps”) for a variety of purposes, including preventing front-running attacks on decentralized finance (DeFi) platforms, end-to-end encryption for decentralized messaging and social networks (SocialFi), cross-chain bridges, as well as advanced cryptographic primitives such as witness encryption and one-time programs that previously could only be built from secure hardware or using a trusted third party. And all of that by secret-sharing just a single secret key…
ePrint: https://eprint.iacr.org/2023/616
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