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Title:
A note on VRFs from Verifiable Functional Encryption
Authors: Saikrishna Badrinarayanan, Vipul Goyal, Aayush Jain, Amit Sahai
Abstract:Recently, Bitansky [Bit17] and Goyal et.al [GHKW17] gave generic constructions of selec- tively secure verifiable random functions(VRFs) from non-interactive witness indistinguishable proofs (NIWI) and injective one way functions. In this short note, we give an alternate construc- tion of selectively secure VRFs based on the same assumptions as an application of the recently introduced notion of verifiable functional encryption [BGJS16]. Our construction and proof is much simpler than the ones in [Bit17, GHKW17], given previous work (most notably given the constructions of verifiable functional encryption in [BGJS16]).
ePrint: https://eprint.iacr.org/2017/051
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