A note on VRFs from verifiable functional encryption
Cryptology ePrint Archive, 2017•eprint.iacr.org
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 …
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 …
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]).
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