On tightly-secure linkable ring signatures
Web22 de dez. de 2024 · Fiat-Shamir with aborts is a technique to transform a lattice-based identification scheme to a signature scheme introduced by Lyubashevsky (in Asiacrypt 2009). The scheme is also provably secure based on some standard lattice problems. In this paper, we show how to generically transform a signature scheme, obtained by Fiat … Weblinkable ring signatures of size log(‘)poly( ) without setup and in the standard model. Along the way, we introduce new techniques that enable us to use NIWI proofs instead of NIZK proofs, which may be of independent interest. As an additional contribution, we propose a stronger security model for link-able ring signatures and prove that our ...
On tightly-secure linkable ring signatures
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Web25 de jan. de 2013 · In this paper, we construct a linkable ring signature scheme with unconditional anonymity. It has been regarded as an open problem in [22] since 2004 for the construction of an unconditional anonymous linkable ring signature scheme. We are the first to solve this open problem by giving a concrete instantiation, which is proven secure … WebThis paper constructs an identity-based linkable ring signature (LRS) scheme over NTRU lattice by employing the technologies of trapdoor generation and rejection sampling. The security of this scheme relies on the small integer solution (SIS) problem on NTRU lattice.
WebIn this paper, we point out the difficulties of creating tightly-secure ring signatures (RS) and linkable ring signatures (LRS), then present solutions to overcome them. As a result, we … Web3 de dez. de 2024 · Ring signatures have made their way into practice in the area of privacy-enhancing technologies and they build the core of several cryptocurrencies. Despite their …
Webmodi cations. For example, ring signatures are constructed in the bilinear pair-ing setting in [26], key structures are generalized in [1], security de nitions are improved in [5], signature size is improved in [7,11], and traceability is intro-duced in [8]. Linkable ring signature (LRS) constructions were rst introduced in [14]; in WebIn cryptography, a ring signature is a type of digital signature that can be performed by any member of a set of users that each have keys. Therefore, a message signed with a …
WebKeywords: ring signatures, designated verifier, non-transferability, link-ability, anonymity 1 Introduction We present Designated-Verifier Linkable Ring Signatures (DVLRS), a new type of privacy-oriented digital signature. Our primitive is a linkable ring signature [15], i.e. it protects the anonymity of the signers by ‘hiding’ their ...
WebIn their paper, "1-out-of-n Signatures from a Variety of Keys"[1], Abe, Ohkubo and Suzuki (AOS) present a method to construct a 1-out-of-n signature scheme that allows mixture use of different flavours of keys at the same time. Linkable Spontaneous Anonymous Group (LSAG) Signature. Liu, et al.[2] add the property of linkability to ring signatures. how to subtract integers using a number lineWebsignature scheme [12], we obtain a lattice-based linkable ring signature scheme whose signature size is logarithmic in the number of ring mem-bers. This scheme is practical, … reading mri brain scanWeb4 de jun. de 2024 · We present a linkable ring signature construction with concise signatures and multi-dimensional keys that is linkably anonymous if a variation of the decisional Diffie-Hellman problem with random oracles is hard, linkable if key aggregation is a one-way function, and non-slanderable if a one-more variation of the discrete logarithm ... how to subtract like fractionsWeb1 de ago. de 2024 · Spurred on by the gravity of key exposure in the setting of identity-based cryptography, we introduce a stateless forward-secure key-insulated linkable ring signature accomplished partly with on-demand ephemeral secret keys consequently eliminating the need for state-keeping and long-term storage. reading msc computer scienceWeb21 de out. de 2024 · Thus our linkable ring signature scheme satisfies link correctness. 4.2. Security analysis. In this subsection, we will show that our linkable ring signature is secure. Note that, in , they use the forking lemma [39, 40] (which is essentially rewinding) to prove the security of their schemes. reading msc management international businessWebWe propose unique ring signatures that simplify and capture the spirit of linkable ring signatures. We use new techniques to provide an instantiation which can be tightly … how to subtract matricesWeb29 de jun. de 2024 · Linkable ring signature is a variant such that two signatures can be linked if and only if they were signed by the same person. Recently, the first short … reading msc finance