Welcome to the resource topic for 2022/1263
Title:
Steganography-Free Zero-Knowledge
Authors: Behzad Abdolmaleki, Nils Fleischhacker, Vipul Goyal, Abhishek Jain, Giulio Malavolta
Abstract:We revisit the well-studied problem of preventing steganographic communication in multi-party communications. While this is known to be a provably impossible task, we propose a new model that allows circumventing this impossibility. In our model, the parties first publish a single message during an honest non-interactive pre-processing phase and then later interact in an execution phase. We show that in this model, it is indeed possible to prevent any steganographic communication in zero-knowledge protocols. Our solutions rely on standard cryptographic assumptions.
ePrint: https://eprint.iacr.org/2022/1263
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