Statement-Oblivious Threshold Witness Encryption

ePrint Report: Statement-Oblivious Threshold Witness Encryption

Sebastian Faust, Carmit Hazay, David Kretzler, Benjamin Schlosser

The notion of witness encryption introduced by Garg et al. (STOC'13) allows to encrypt a message under a statement $x$ from some NP-language $\mathcal{L}$ with associated relation $(x,w) \in \mathcal{R}$, where decryption can be carried out with the corresponding witness $w$. Unfortunately, known constructions for general-purpose witness encryption rely on strong assumptions, and are mostly of theoretical interest. To address these shortcomings, Goyal et al. (PKC'22) …

decryption encrypt encryption eprint report language message oblivious report statement under