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IACR
2011
80views more  IACR 2011»
12 years 8 months ago
History-Free Sequential Aggregate Signatures
Aggregation schemes allow to combine several cryptographic values like message authentication codes or signatures into a shorter value such that, despite compression, some notion o...
Marc Fischlin, Anja Lehmann, Dominique Schröd...
CRYPTO
2011
Springer
245views Cryptology» more  CRYPTO 2011»
12 years 8 months ago
Fully Homomorphic Encryption from Ring-LWE and Security for Key Dependent Messages
We present a somewhat homomorphic encryption scheme that is both very simple to describe and analyze, and whose security (quantumly) reduces to the worst-case hardness of problems ...
Zvika Brakerski, Vinod Vaikuntanathan
FSE
2007
Springer
115views Cryptology» more  FSE 2007»
14 years 3 months ago
Improving the Security of MACs Via Randomized Message Preprocessing
Abstract. “Hash then encrypt” is an approach to message authentication, where first the message is hashed down using an ε-universal hash function, and then the resulting k-bi...
Yevgeniy Dodis, Krzysztof Pietrzak
HUC
2007
Springer
14 years 3 months ago
Security by Spatial Reference: Using Relative Positioning to Authenticate Devices for Spontaneous Interaction
Spontaneous interaction is a desirable characteristic associated with mobile and ubiquitous computing. The aim is to enable users to connect their personal devices with devices en...
Rene Mayrhofer, Hans Gellersen, Mike Hazas
IJAMC
2008
84views more  IJAMC 2008»
13 years 8 months ago
Towards an authentication service for Peer-to-Peer based Massively Multiuser Virtual Environments
Abstract-- In this paper we propose a distributed authentication service for peer-to-peer (P2P) based massively multiuser virtual environments. Such a service is necessary to provi...
Arno Wacker, Gregor Schiele, Sebastian Schuster, T...