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Practical reusable garbled circuits with parallel updates
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DOI：10.1016/j.csi.2023.103721.png)
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摘要
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The central contribution of the current paper is to establish a practical and effective reusable garbled circuit scheme with parallel updates, where each update is applied to the circuit in parallel. First of all, we present a strengthened notion of inner product functional encryption (IPE) called simulation-based security (SIM-security) for multi-instance and show that a secret-key IPE scheme is multi-instance SIM-secure. Then we put forward a reusable garbled circuit scheme based on the IPE scheme. The idea is a reduction from re-randomizable garbled circuits in which the distribution of the original garbled circuit is computationally indistinguishable from the re-randomized garbled circuit. Finally, we implemented reusable garbled circuits and validate the practicality of our reusable garbled circuit scheme. Experimental results demonstrate that our reusable garbled circuit scheme is suitable for a wide range of real-world scenarios.
Keyword:
Reusable garbled circuits
SIM-security for multi-instance
Re-randomizable garbled circuits
Secret-key IPE
期刊
C
IF:
3.1
论文数:
2.3K
被引数:
2.0K
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