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Efficient IBE with Tight Reduction to Standard Assumption in the Multi-challenge Setting
Identity based encryption Tight security Nested dual system group
2016/12/9
In 2015, Hofheinz et al. [PKC, 2015] extended Chen and Wee's almost-tight reduction technique for identity based encryptions (IBE) [CRYPTO, 2013] to the multi-instance, multi-ciphertext (MIMC, or mult...
Resettable Zero Knowledge in the Bare Public-Key Model under Standard Assumption
Resettable Zero Knowledge Concurrent Soundness Bare Public-Key Model Resettably sound Zero Knowledge
2008/12/5
In this paper we resolve an open problem regarding resettable zero knowledge
in the bare public-key (BPK for short) model: Does there exist constant
round resettable zero knowledge argument with con...