To label, or not to label (in generic groups)
M Zhandry - Annual International Cryptology Conference, 2022 - Springer
Generic groups are an important tool for analyzing the feasibility and in-feasibility of group-
based cryptosystems. There are two distinct wide-spread versions of generic groups …
based cryptosystems. There are two distinct wide-spread versions of generic groups …
Improved constructions of anonymous credentials from structure-preserving signatures on equivalence classes
Anonymous attribute-based credentials (ABCs) are a powerful tool allowing users to
authenticate while maintaining privacy. When instantiated from structure-preserving …
authenticate while maintaining privacy. When instantiated from structure-preserving …
Zero-knowledge proofs for set membership: Efficient, succinct, modular
D Benarroch, M Campanelli, D Fiore, K Gurkan… - Designs, Codes and …, 2023 - Springer
We consider the problem of proving in zero knowledge that an element of a public set
satisfies a given property without disclosing the element, ie, for some u,“u∈ S and P (u) …
satisfies a given property without disclosing the element, ie, for some u,“u∈ S and P (u) …
An analysis of the algebraic group model
The algebraic group model (AGM), formalized by Fuchsbauer, Kiltz, and Loss, has recently
received significant attention. One of the appealing properties of the AGM is that it is viewed …
received significant attention. One of the appealing properties of the AGM is that it is viewed …
Threshold structure-preserving signatures
Abstract Structure-preserving signatures (SPS) are an important building block for privacy-
preserving cryptographic primitives, such as electronic cash, anonymous credentials, and …
preserving cryptographic primitives, such as electronic cash, anonymous credentials, and …
Impossibilities in succinct arguments: Black-box extraction and more
M Campanelli, C Ganesh, H Khoshakhlagh… - … on Cryptology in Africa, 2023 - Springer
The celebrated result by Gentry and Wichs established a theoretical barrier for succinct non-
interactive arguments (SNARGs), showing that for (expressive enough) hard-on-average …
interactive arguments (SNARGs), showing that for (expressive enough) hard-on-average …
Permissioned blockchain-based secure and privacy-preserving data sharing protocol
Z Wang, Q Chen, L Liu - IEEE Internet of Things Journal, 2023 - ieeexplore.ieee.org
In this Internet of Things era, privacy preserving is one of the most vital barriers for personal
data sharing. In this article, we present a secure and privacy-preserving data sharing …
data sharing. In this article, we present a secure and privacy-preserving data sharing …
On security proofs of existing equivalence class signature schemes
B Bauer, G Fuchsbauer, F Regen - Cryptology ePrint Archive, 2024 - eprint.iacr.org
Equivalence class signatures (EQS; Asiacrypt'14), sign vectors of elements from a bilinear
group. Anyone can transform a signature on a vector to a signature on any multiple of that …
group. Anyone can transform a signature on a vector to a signature on any multiple of that …
On the impossibility of algebraic NIZK in pairing-free groups
E Giunta - Annual International Cryptology Conference, 2023 - Springer
Abstract Non-Interactive Zero-Knowledge proofs (NIZK) allow a prover to convince a verifier
that a statement is true by sending only one message and without conveying any other …
that a statement is true by sending only one message and without conveying any other …
Witness encryption for succinct functional commitments and applications
M Campanelli, D Fiore, H Khoshakhlagh - IACR International Conference …, 2024 - Springer
Witness encryption (WE), introduced by Garg, Gentry, Sahai, and Waters (STOC 2013)
allows one to encrypt a message to a statement x for some NP language L, such that any …
allows one to encrypt a message to a statement x for some NP language L, such that any …