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Abstract:
Blockchain-based data transaction protocols augmented with zero-knowledge proofs offer fairness to the participants, yet they encounter challenges pertaining to both security and efficiency. We propose the zk-DSTARK, a zk-STARK-based protocol that enables distributed generation of zero-knowledge proofs, significantly reducing the computational burden. And zk-DSTARK inherits zk-STARK's feature of single proof generation for multiple uses, improving the efficiency of successive transactions. Furthermore, we propose a fair exchange system named zk-DCIAExchange for off-chain verification, which is based on zk-DSTARK and intel software guard extensions (SGX). This system not only minimizes on-chain overhead but also ensures the security and fairness of the transaction. Experimental results show that, in continuous transactions scenarios, the time overhead for subsequent transactions is diminished by 99.9% compared to the first transaction; compared to zero knowledge contingent payment (ZKCSP), our scheme achieves a remarkable 92% reduction in time overhead, and a 26.3% reduction when compared to FairSwap; with 32 distributed nodes and a trace length of 216, the proof generation time is reduced by similar to 85.45%; the additional verification time introduced by the SGX is similar to 0.45 s, which is deemed acceptable, and the on-chain verification overhead is reduced by similar to 7.2% compared to the ZKCSP and similar to 54.4% compared to FairSwap.
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Source :
COMPUTER JOURNAL
ISSN: 0010-4620
Year: 2025
1 . 4 0 0
JCR@2022
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 4
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