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PKC
2012
Springer
237views Cryptology» more  PKC 2012»
7 years 2 months ago
Relatively-Sound NIZKs and Password-Based Key-Exchange
We define a new notion of relatively-sound non-interactive zeroknowledge (NIZK) proofs, where a private verifier with access to a trapdoor continues to be sound even when the Ad...
Charanjit S. Jutla, Arnab Roy
PKC
2012
Springer
279views Cryptology» more  PKC 2012»
7 years 2 months ago
Circular and KDM Security for Identity-Based Encryption
We initiate the study of security for key-dependent messages (KDM), sometimes also known as “circular” or “clique” security, in the setting of identity-based encryption (I...
Jacob Alperin-Sheriff, Chris Peikert
PKC
2012
Springer
235views Cryptology» more  PKC 2012»
7 years 2 months ago
Improved Security for Linearly Homomorphic Signatures: A Generic Framework
ded abstract of this work will appear in Public Key Cryptography — PKC 2012. This is the full version. We propose a general framework that converts (ordinary) signature schemes ...
David Mandell Freeman
PKC
2012
Springer
212views Cryptology» more  PKC 2012»
7 years 2 months ago
Public-Key Cryptography from New Multivariate Quadratic Assumptions
In this work, we study a new multivariate quadratic (MQ) assumption that can be used to construct public-key encryption schemes. In particular, we research in the following two di...
Yun-Ju Huang, Feng-Hao Liu, Bo-Yin Yang
PKC
2012
Springer
212views Cryptology» more  PKC 2012»
7 years 2 months ago
Security of Blind Signatures Revisited
We revisit the definition of unforgeability of blind signatures as proposed by Pointcheval and Stern (Journal of Cryptology 2000). Surprisingly, we show that this established de...
Dominique Schröder, Dominique Unruh
PKC
2012
Springer
255views Cryptology» more  PKC 2012»
7 years 2 months ago
Better Bootstrapping in Fully Homomorphic Encryption
Gentry’s bootstrapping technique is currently the only known method of obtaining a “pure” fully homomorphic encryption (FHE) schemes, and it may offers performance advantage...
Craig Gentry, Shai Halevi, Nigel P. Smart
PKC
2012
Springer
219views Cryptology» more  PKC 2012»
7 years 2 months ago
On the Security of Dynamic Group Signatures: Preventing Signature Hijacking
We identify a potential weakness in the standard security model for dynamic group signatures which appears to have been overlooked previously. More specifically, we highlight tha...
Yusuke Sakai, Jacob C. N. Schuldt, Keita Emura, Go...
PKC
2012
Springer
234views Cryptology» more  PKC 2012»
7 years 2 months ago
Ring-LWE in Polynomial Rings
Abstract. The Ring-LWE problem, introduced by Lyubashevsky, Peikert, and Regev (Eurocrypt 2010), has been steadily finding many uses in numerous cryptographic applications. Still,...
Léo Ducas, Alain Durmus
PKC
2012
Springer
235views Cryptology» more  PKC 2012»
7 years 2 months ago
Outsider-Anonymous Broadcast Encryption with Sublinear Ciphertexts
Abstract. In the standard setting of broadcast encryption, information about the receivers is transmitted as part of the ciphertext. In several broadcast scenarios, however, the id...
Nelly Fazio, Irippuge Milinda Perera
PKC
2012
Springer
255views Cryptology» more  PKC 2012»
7 years 2 months ago
Strongly Secure Authenticated Key Exchange from Factoring, Codes, and Lattices
Abstract. An unresolved problem in research on authenticated key exchange (AKE) is to construct a secure protocol against advanced attacks such as key compromise impersonation and ...
Atsushi Fujioka, Koutarou Suzuki, Keita Xagawa, Ka...
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