[Resource Topic] 2025/279: Context-Dependent Threshold Decryption and its Applications

Welcome to the resource topic for 2025/279

Title:
Context-Dependent Threshold Decryption and its Applications

Authors: Dan Boneh, Benedikt Bünz, Kartik Nayak, Lior Rotem, Victor Shoup

Abstract:

We initiate the study of high-threshold public-key decryption, along with an enhanced security feature called context-dependent decryption.
Our study includes definitions, constructions, security proofs, and applications.
The notion of high-threshold decryption has received almost no attention in the literature. The enhanced security feature of context-dependent encryption is entirely new, and plays an important role in many natural applications of threshold decryption.

ePrint: https://eprint.iacr.org/2025/279

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