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ACSAC
2008
IEEE
14 years 2 months ago
The Role Hierarchy Mining Problem: Discovery of Optimal Role Hierarchies
Role hierarchies are fundamental to the role based access control (RBAC) model. The notion of role hierarchy is a well understood concept that allows senior roles to inherit the p...
Qi Guo, Jaideep Vaidya, Vijayalakshmi Atluri
EUROCRYPT
2005
Springer
14 years 1 months ago
Fuzzy Identity-Based Encryption
We introduce a new type of Identity-Based Encryption (IBE) scheme that we call Fuzzy Identity-Based Encryption. In Fuzzy IBE we view an identity as set of descriptive attributes. ...
Amit Sahai, Brent Waters
ESORICS
2008
Springer
13 years 9 months ago
A Framework for the Analysis of Mix-Based Steganographic File Systems
Abstract. The goal of Steganographic File Systems (SFSs) is to protect users from coercion attacks by providing plausible deniability on the existence of hidden files. We consider ...
Claudia Díaz, Carmela Troncoso, Bart Prenee...
JCS
2011
72views more  JCS 2011»
13 years 2 months ago
Automatically deriving information-theoretic bounds for adaptive side-channel attacks
We present a model of adaptive attacks which we combine with information-theoretic metrics to quantify the information revealed to an adaptive adversary. This enables us to expres...
Boris Köpf, David A. Basin
ITSL
2008
13 years 9 months ago
A Randomized Complexity-theoretic Model of Bio-inspired Mobile Epidemics via Close Contact
In this paper we present a randomized complexity theoretic model for those epidemics propagated via short-distance close contact. We prove that the contact-based epidemics problems...
Zhen Cao, Jiejun Kong, Mario Gerla, Dapeng Wu