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Fuchsbauer, Kiltz, and Loss~(Crypto'18) gave a simple and clean definition of an ¥emph{algebraic group model~(AGM)} that lies in between the standard model and the generic group model~(GGM). Specifica...
Memory-Tight Reductions     memory  tightness  provable security       2017/7/14
Cryptographic reductions typically aim to be tight by transforming an adversary A into an algorithm that uses essentially the same resources as A. In this work we initiate the study of memory efficien...
The issue of tight security in identity-based encryption scheme (IBE) has been widely investigated. Recently, a tightly secure IBE scheme of bilinear groups in the weak multi-challenge setting has be...
We derive some tight equivalence reductions between several Strong Die-Hellman (SDH) assumptions.

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