Structure-Preserving Signatures From Standard Assumptions, Revisited
ADVANCES IN CRYPTOLOGY, PT II(2015)
摘要
Structure-preserving signatures (SPS) are pairing-based signatures where all the messages, signatures and public keys are group elements, with numerous applications in public-key cryptography. We present new, simple and improved SPS constructions under standard assumptions via a conceptually different approach. Our constructions significantly narrow the gap between existing constructions from standard assumptions and optimal schemes in the generic group model.
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