On tightly-secure linkable ring signatures

Web4 Information Security Laboratory, KDDI Research, Inc. 2-1-15 Ohara, Fujimino-shi, Saitama, 356-8502, Japan {ka-fukushima,kiyomoto}@kddi-research.jp Abstract. Unique ring signatures (URS) were introduced by Franklin and Zhang (FC 2012) as a unification of linkable and traceable ring signatures. In URS, each member within a ring can only … Web16 de mar. de 2024 · A linkable ring signature extends this concept by including a "key image". When you create the ring and use a particular private key to "join the ring", a key image is declared which is a public key corresponding to that private key, except on a different generator point. Because of the EC discrete-log problem, no one can tell which …

Concise Linkable Ring Signatures and Forgery Against …

Web8 de ago. de 2024 · In this paper, we revisit the generic construction of ring signatures from hash-then-one-way type (Type-H) signatures proposed by Abe et al. (AOS) in 2004 and made the following contributions. First, we give a proof for the generic construction, in a strengthened security model. Previously, this was only done for concrete instantiations, … 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 ... cimb private banking wiki https://envirowash.net

Linkable ring signature with unconditional anonymity

Web21 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. WebDualDory: Logarithmic-Verifier Linkable Ring Signatures Through Preprocessing Jonathan Bootle1, Kaoutar Elkhiyaoui1, Julia Hesse1(B), and Yacov Manevich2 1 IBM Research - Zurich, Ruschlikon, Switzerland¨ {jbt,kao,jhs}@zurich.ibm.com2 IBM Research - Haifa, Haifa, Israel [email protected] Abstract. A linkable ring signature allows a … WebIn 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 … cimb preferred customer

Designated-Verifier Linkable Ring Signatures - IACR

Category:On Tightly-Secure (Linkable) Ring Signatures

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On tightly-secure linkable ring signatures

Fiat-Shamir with Aborts: From Identification Schemes to Linkable Ring ...

Websignature. The linkable ring signature is ˙= f˙ R;opk ˇ;sigg. The verification is similar to the non-linkable version, with an additional step to verify the one-time signature. Similar to [8], we also instantiate this generic linkable ring signature with NTRU lattice using a NTRU-based Type-H signature scheme: FALCON [9]. Our analysis shows ... 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 ...

On tightly-secure linkable ring signatures

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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 … WebOn Tightly-Secure (Linkable) Ring Signatures @inproceedings{Tang2024OnT, title={On Tightly-Secure (Linkable) Ring Signatures}, author={Guofeng Tang}, …

WebWe 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 … WebTight security is increasingly gaining importance in real-world cryptography, as it allows to deploy the cryptosystem without compensating the security loss of a reduction with larger …

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 …

Web16 de mar. de 2024 · A linkable ring signature extends this concept by including a "key image". When you create the ring and use a particular private key to "join the ring", a key image is declared which is a public key corresponding to that private key, except on a different generator point.

Webposed the separable linkable ring signature (LRS) scheme, which also supported a threshold option. Liu et al. [11] developed two polynomial-structured linkable ring signature methods, as well as a strong security model of [9] for practical attacker environments. Fan et al. [12] proposed a (linkable) ring signature with SM2 algorithm. dh mt 5 covishieldWebTight security is increasingly gaining importance in real-world cryptography, as it allows to deploy the cryptosystem without compensating the security loss of a reduction with … cimb property auction near meWeb1 de set. de 2024 · In this paper, we point out the difficulties of creating tightly-secure ring signatures (RS) and linkable ring signatures (LRS), then present solutions to … cimb ram ratingWeb3 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 … dhm taxes and moreWeb2.5. Linkable Ring Signature. The biometric cryptosystem can be found in [] and the NIZK scheme can be found in [].Our definitions are in the spirit of [4, 5, 12].Definition 3. A linkable ring signature scheme based on SKE and NIZK consists of five algorithms: (1): on input of the user’s biometric vector and a finite field polynomial order, output public helper data. cim brand coursesWeb8 de ago. de 2024 · In this paper, we revisit the generic construction of ring signatures from hash-then-one-way type (Type-H) signatures proposed by Abe et al. (AOS) in 2004 and … cimb regular savings accountWebKeywords: Lattice-Based cryptography· Linkable ring signature · Standard model. 1 Introduction Ring signatures, introduced by Rivest et al. [39], allow a signer to hide in a ring of potential signers of which the user is a member, without revealing which member actually produced the signature. However, the signer-anonymity may dhm tamworth