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arXiv · 2410.03948

Unidirectional Key Update in Updatable Encryption, Revisited

M. Jurkiewicz·K. Prabucka
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Abstract

In this paper we construct a new efficient updatable encryption (UE) scheme based on FrodoPKE learning with errors key encapsulation. We analyse the security of the proposed scheme in the backward-leak uni-directional setting within the rand-ind-eu-cpa model. Since the underlying computationally hard problem here is LWE, the scheme is secure against both classical and quantum attacks.

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M. Jurkiewicz, K. Prabucka. 2024-10-04. Unidirectional Key Update in Updatable Encryption, Revisited. https://doi.org/10.46298/fi.14425

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