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New Techniques for Structural Batch Verification in Bilinear Groups with Applications to Groth-Sahai Proofs
Batch verification bilinear maps Groth-Sahai proofs
2017/8/29
Bilinear groups form the algebraic setting for a multitude of important cryptographic protocols including anonymous credentials, e-cash, e-voting, e-coupon, and loyalty systems. It is typical of such ...
Groth-Sahai Proofs Revisited Again: A Bug in Randomization
Non-interactive proof systems the Groth-Sahai proof system symmetric bilinear groups
2016/5/20
We revisit randomization of the prover in the GS proof system. We find an unnoticed bug in the ``optimized'' randomization in the symmetric bilinear setting with several assumptions, say, the DLIN ass...
Fine-Tuning Groth-Sahai Proofs
Non-interactive zero-knowledge proofs commit-and-prove schemes
2014/3/7
Groth-Sahai proofs are efficient non-interactive zero-knowledge proofs that have found widespread use in pairing-based cryptography. We propose efficiency improvements of Groth-Sahai proofs in the SXD...
Groth-Sahai proofs revisited
Groth-Sahai proofs
2009/12/29
Since their introduction in 2008, the non interactive zero-
knowledge (NIZK) and non interactive witness indistinguishable (NIWI)
proofs designed by Groth and Sahai have been used in numerous applic...