搜索结果: 1-15 共查到“军事学 structure-preserving signatures”相关记录21条 . 查询时间(0.218 秒)
Efficient Tightly-Secure Structure-Preserving Signatures and Unbounded Simulation-Sound QA-NIZK Proofs
Structure-preserving signatures QA-NIZK simulation-soundness
2019/9/16
We show how to construct structure-preserving signatures (SPS) and unbounded quasi-adaptive non-interactive zero-knowledge (USS QA-NIZK) proofs with a tight security reduction to simple assumptions, b...
Further Lower Bounds for Structure-Preserving Signatures in Asymmetric Bilinear Groups
public-key cryptography Structure-Preserving Signatures
2019/1/2
Structure-Preserving Signatures (SPSs) are a useful tool for the design of modular cryptographic protocols. Recent series of works have shown that by limiting the message space of those schemes to the...
Lower Bounds on Structure-Preserving Signatures for Bilateral Messages
Structure-Preserving Signatures Bilateral Messages Crucial Relation
2018/7/9
Lower bounds for structure-preserving signature (SPS) schemes based on non-interactive assumptions have only been established in the case of unilateral messages, i.e. schemes signing tuples of group e...
More Efficient (Almost) Tightly Secure Structure-Preserving Signatures
Structure-preserving signatures tight security
2018/1/17
We provide a structure-preserving signature (SPS) scheme with an (almost) tight security reduction to a standard assumption. Compared to the state-of-the-art tightly secure SPS scheme of Abe et al.
Improved (Almost) Tightly-Secure Structure-Preserving Signatures
Structure preserving signatures bilinear pairings SXDH
2018/1/11
Structure Preserving Signatures (SPS) allow the signatures and the messages signed to be further encrypted while retaining the ability to be proven valid under zero-knowledge. In particular, SPS are t...
How Low Can You Go? Short Structure-Preserving Signatures for Diffie-Hellman Vectors
Digital Signatures Structure-Preserving Signatures Type-3 Groups
2017/9/25
Structure-Preserving Signatures (SPSs) are an important tool for the design of modular cryptographic protocols. It has been proven that such schemes in the most efficient Type-3 bilinear group setting...
Compact Structure-preserving Signatures with Almost Tight Security
Structure-preserving signatures Tight reduction Adaptive partitioning
2017/6/6
In structure-preserving cryptography, every building block shares the same bilinear groups. These groups must be generated for a specific, a prior fixed security level, and thus it is vital that the s...
Improved Structure Preserving Signatures under Standard Bilinear Assumptions
QA-NIZK SXDH MDDH
2017/2/20
We show that the recent structure-preserving signature (SPS) scheme of Kiltz, Pan and Wee [CRYPTO 2015], provably secure under the standard bilinear pairings group assumption SXDH, can be improved to ...
More Efficient Structure-Preserving Signatures - Or: Bypassing the Type-III Lower Bounds
Structure-Preserving Digital Signatures Type-III Bilinear Groups
2016/3/9
Structure-preserving signatures are an important cryptographic primitive that is useful for the design of modular cryptographic protocols. It has been proven that structure-preserving signatures (in t...
Unified, Minimal and Selectively Randomizable Structure-Preserving Signatures
Structure-preserving signatures automorphic signatures selective randomizability
2016/1/26
We construct a structure-preserving signature scheme that
is selectively randomizable and works in all types of bilinear groups.
We give matching lower bounds showing that our structure-preserving
...
Structure-Preserving Signatures from Type II Pairings
Structure-preserving signatures Type II pairings strong existential unforgeability
2016/1/23
We investigate structure-preserving signatures in asymmetric bilinear groups with an efficiently computable homomorphism from one source group to the other, i.e., the Type II setting. It has been sho...
Structure-Preserving Signatures on Equivalence Classes and their Application to Anonymous Credentials
Public key cryptography structure-preserving signatures attribute-based anonymous credentials
2016/1/7
Structure-preserving signatures are a quite recent but important building block for many
cryptographic protocols. In this paper, we introduce a new type of structure-preserving signatures, which
all...
EUF-CMA-Secure Structure-Preserving Signatures on Equivalence Classes
public-key cryptography structure-preserving signatures
2016/1/5
At ASIACRYPT’14 Hanser and Slamanig proposed a new primitive called structure-preserving signatures
on equivalence classes (SPS-EQ) and used it to construct very efficient attribute-based anonymous
...
Strongly-Optimal Structure Preserving Signatures from Type II Pairings: Synthesis and Lower Bounds
Structure-Preserving Signatures Generic Group Model Bilinear Groups
2016/1/5
Recent work on structure-preserving signatures studies optimality of these schemes in terms of the
number of group elements needed in the verification key and the signature, and the number of pairing...
Structure-Preserving Signatures from Standard Assumptions, Revisited
public-key cryptography Standard Assumptions
2015/12/29
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 pre...