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- W4313347166 abstract "AbstractDue to the recent attack of Beullens on Rainbow, the crypto community looks back again at the unbalanced oil-and-vinegar (UOV) signature. The original UOV does not have any formal security reduction. It was Sakumoto et al. who added a random salt to the original UOV signature to give a reduction under the UOV-inversion (UOVI) problem in the classical random oracle model (CROM).In this paper, we revisit the security of salted UOV signature. We start by identifying some issues related to programming the random oracle and the distribution of the salt. Then provide a security reduction of the salted UOV signature in the CROM that clearly addresses these issues. One crucial requirement of our reduction is that the field size needs to be asymptotically superpolynomial in the security parameter. We also give a security reduction of the salted UOV under the UOVI problem in the quantum random oracle model. This work is hoped to aid further concrete security analysis and thereby guide parameter choice of UOV-based schemes in the context of future standardization of post-quantum signature.KeywordsDigital signatureMultivariate cryptographyUOVPost-quantum securityQROM" @default.
- W4313347166 created "2023-01-06" @default.
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- W4313347166 date "2022-01-01" @default.
- W4313347166 modified "2023-10-14" @default.
- W4313347166 title "Revisiting the Security of Salted UOV Signature" @default.
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- W4313347166 doi "https://doi.org/10.1007/978-3-031-22912-1_31" @default.
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