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We present Recursive Square Root ORAM (R-SQRT), a simple and flexible ORAM that can be instantiated for different client storage requirements. R-SQRT requires significantly less bandwidth than Ring an...
Composable & Modular Anonymous Credentials: Definitions and Practical Constructions
(Fully) structure preserving signatures vector commitments anonymous credentials
2015/12/29
It takes time for theoretical advances to get used in practical schemes. Anonymous credential
schemes are no exception. For instance, existing schemes suited for real-world use
lack formal, composab...
Formalizing Group Blind Signatures and Practical Constructions without Random Oracles
public-key cryptography/ Group Signatures Blind Signatures Group Blind Signatures Security Model
2012/3/27
In this paper, we first provide foundations for dynamic group blind signatures where we provide formal security definitions and present a security model to capture all the security properties. In doin...