Feb. 6, 2024, 11 a.m. |

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ePrint Report: On Tweakable Correlation Robust Hashing against Key Leakages

Chun Guo, Xiao Wang, Kang Yang, Yu Yu

We continue the study of blockcipher-based (tweakable) correlation robust hash functions, which are central building blocks of circuit garbling and oblivious-transfer extension schemes. As results, we first enhance the multi-user tweakable correlation robust notion of Guo et al. (CRYPTO 2020) with a {\it key leaking oracle} that tells the adversary whether a certain user key satisfies the adversarially-chosen predicate. We then investigate …

building continue correlation eprint report extension functions hash hash functions hashing key notion oblivious report results study transfer wang

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