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PODC
2011
ACM
12 years 10 months ago
Securing social networks
We present a cryptographic framework to achieve access control, privacy of social relations, secrecy of resources, and anonymity of users in social networks. The main idea is to u...
Michael Backes, Matteo Maffei, Kim Pecina
IACR
2011
88views more  IACR 2011»
12 years 7 months ago
Targeted Malleability: Homomorphic Encryption for Restricted Computations
We put forward the notion of targeted malleability: given a homomorphic encryption scheme, in various scenarios we would like to restrict the homomorphic computations one can perf...
Dan Boneh, Gil Segev, Brent Waters
IACR
2011
97views more  IACR 2011»
12 years 7 months ago
Two-Output Secure Computation with Malicious Adversaries
We present a method to compile Yao’s two-player garbled circuit protocol into one that is secure against malicious adversaries that relies on witness indistinguishability. Our ap...
Abhi Shelat, Chih-Hao Shen
IACR
2011
105views more  IACR 2011»
12 years 7 months ago
Leakage Tolerant Interactive Protocols
We put forth a framework for expressing security requirements from interactive protocols in the presence of arbitrary leakage. This allows capturing different levels of leakage to...
Nir Bitansky, Ran Canetti, Shai Halevi
EUROCRYPT
2009
Springer
14 years 8 months ago
On the Portability of Generalized Schnorr Proofs
The notion of Zero Knowledge Proofs (of knowledge) [ZKP] is central to cryptography; it provides a set of security properties that proved indispensable in concrete protocol design...
Jan Camenisch, Aggelos Kiayias, Moti Yung