By Dan Boneh (auth.), Xiaoyun Wang, Kazue Sako (eds.)
This publication constitutes the refereed court cases of the 18th overseas convention at the idea and alertness of Cryptology and data safety, Asiacrypt 2012, held in Beijing, China, in December 2012. The forty three complete papers awarded have been conscientiously reviewed and chosen from 241 submissions. they're equipped in topical sections named: public-key cryptography, beginning, symmetric cipher, defense evidence, lattice-based cryptography and quantity concept, hash functionality, cryptographic protocol, and implementation issues.
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Additional resources for Advances in Cryptology – ASIACRYPT 2012: 18th International Conference on the Theory and Application of Cryptology and Information Security, Beijing, China, December 2-6, 2012. Proceedings
Meeting this goal for certain systems is often challenging. For instance, the Camenisch and Lysyanskaya signature scheme 1 has been very inﬂuential as it is used as the foundation for a wide variety of advanced cryptographic systems, including anonymous credentials [24,7,6], group signatures [24,5], ecash , uncloneable functions , batch veriﬁcation , and RFID encryption . While the demonstrated utility of CL signatures has made them desirable, it has been diﬃcult to reduce their security to a static security assumption.
We then show that creating a secure dual form signature system naturally yields an existentially unforgeable signature scheme. We emphasize that the purpose of the dual form signature framework is to provide a template for creating security proofs from static assumptions, but the techniques employed to prove the required properties can be tailored to the structure of the particular scheme. Deﬁnition. We deﬁne a dual form signature system to have the following algorithms: KeyGen(λ): Given a security parameter λ, generate a public key, VK, and a private key, SK.
4) What is the exact lower bound for the size of signatures under simple assumptions? Is it possible to show such a bound? References 1. : Structure-Preserving Signatures and Commitments to Group Elements. In: Rabin, T. ) CRYPTO 2010. LNCS, vol. 6223, pp. 209–236. Springer, Heidelberg (2010) 2. : Optimal Structure-Preserving Signatures in Asymmetric Bilinear Groups. In: Rogaway, P. ) CRYPTO 2011. LNCS, vol. 6841, pp. 649–666. Springer, Heidelberg (2011) 3. : Separating Short Structure-Preserving Signatures from Noninteractive Assumptions.