Titlebook: Advances in Cryptology – CRYPTO 2020; 40th Annual Internat Daniele Micciancio,Thomas Ristenpart Conference proceedings 2020 International A

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https://doi.org/10.1007/978-88-470-2139-6hey are also met with some skepticism due to many impossibility results; goals such as commitments and zero-knowledge that are achievable in a stand-alone sense were shown to be unachievable composably (without a setup) since provably no efficient simulator exists. In particular, in the context of a

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R. Brugada,J. Brugada,R. Robertsions of public key cryptosystems that are indifferentiable from ideal cryptosystems, in the random oracle model. Cryptosystems include:.Our schemes are based on relatively standard public key assumptions. By being indifferentiable from an ideal object, our schemes automatically satisfy a wide range

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R. F. Guaragna,C. H. Chen,D. Bracchettieal” protocol (say, appearing in a cryptographic standard). It is based on the indifferentiability framework of Maurer, Renner, and Holenstein (MRH), whose application has been exclusively focused upon non-interactive cryptographic primitives, e.g., hash functions and Feistel networks. Our extension

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R. Brugada,J. Brugada,R. Robertsruvengadam (TCC ’18), Jaeger and Tessaro (EUROCRYPT ’19), and Dinur (EUROCRYPT ’20) – focus on confidentiality, and look at schemes for which trade-offs between the attacker’s memory and its data complexity are inherent. Here, we ask whether these results and techniques can be lifted to the full AE

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https://doi.org/10.1007/978-88-470-2103-7then Cohney et al. (S&P’ 20) point out some potential vulnerabilities in both NIST specification and common implementations of .. While these researchers do suggest counter-measures, the security of the patched . is still questionable. Our work fills this gap, proving that . satisfies the robustness