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
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