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JOC
2007
84views more  JOC 2007»
14 years 17 days ago
Concurrent Composition of Secure Protocols in the Timing Model
In the setting of secure multiparty computation, a set of mutually distrustful parties wish to securely compute some joint function of their inputs. In the stand-alone case, it ha...
Yael Tauman Kalai, Yehuda Lindell, Manoj Prabhakar...
JOC
2007
169views more  JOC 2007»
14 years 17 days ago
Another Look at "Provable Security"
We give an informal analysis and critique of several typical “provable security” results. In some cases there are intuitive but convincing arguments for rejecting the conclusi...
Neal Koblitz, Alfred Menezes
JOC
2007
129views more  JOC 2007»
14 years 17 days ago
Formal Proofs for the Security of Signcryption
Signcryption is a public key or asymmetric cryptographic method that provides simultaneously both message confidentiality and unforgeability at a lower computational and communica...
Joonsang Baek, Ron Steinfeld, Yuliang Zheng
JOC
2007
93views more  JOC 2007»
14 years 17 days ago
Robust Information-Theoretic Private Information Retrieval
A Private Information Retrieval (PIR) protocol allows a user to retrieve a data item of its choice from a database, such that the servers storing the database do not gain informat...
Amos Beimel, Yoav Stahl
JOC
2007
94views more  JOC 2007»
14 years 17 days ago
On Unconditionally Secure Distributed Oblivious Transfer
This paper is about the Oblivious Transfer in the distributed model proposed by M. Naor and B. Pinkas. In this setting a Sender has n secrets and a Receiver is interested in one o...
Carlo Blundo, Paolo D'Arco, Alfredo De Santis, Dou...
JOC
2007
133views more  JOC 2007»
14 years 17 days ago
Trapdoor Hard-to-Invert Group Isomorphisms and Their Application to Password-Based Authentication
In the security chain the weakest link is definitely the human one: human beings cannot remember long secrets and often resort to rather insecure solutions to keep track of their ...
Dario Catalano, David Pointcheval, Thomas Pornin
JOC
2007
125views more  JOC 2007»
14 years 17 days ago
Deterministic Polynomial-Time Equivalence of Computing the RSA Secret Key and Factoring
Abstract. We address one of the most fundamental problems concerning the RSA cryptosystem: does the knowledge of the RSA public and secret key-pair (e, d) yield the factorization o...
Jean-Sébastien Coron, Alexander May
JOC
2007
81views more  JOC 2007»
14 years 17 days ago
Theoretical Cryptanalysis of the Klimov-Shamir Number Generator TF-1
The internal state of the Klimov–Shamir number generator TF-1 consists of four words of size w bits each, whereas its intended strength is 22w. We exploit an asymmetry in its out...
Boaz Tsaban