Welcome to the resource topic for 2022/549
Title:
Smart Contracts Obfuscation from Blockchain-based One-time Program
Authors: Sora Suegami
Abstract:We propose a cryptographic obfuscation scheme for smart contracts from one-time programs using a blockchain, a garbled circuit, and witness encryption. The proposed scheme protects not only the privacy of its input data and states but also the privacy of its algorithm and hardcoded secrets. Its security depends on existing secure blockchains and does not require the honest majority of secure multiparty computation and trusted hardware. This scheme is more efficient than obfuscating an entire program with indistinguishability obfuscation. In addition, it needs a trusted setup, but its security is protected unless all participants of the setup process are malicious.
ePrint: https://eprint.iacr.org/2022/549
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