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GLOBECOM
2010
IEEE
13 years 2 months ago
Providing Secrecy Irrespective of Eavesdropper's Channel State
A usual concern against physical layer security is that the legitimate parties would need to have (partial) channel state information (CSI) of the eavesdropper in order to design t...
Xiang He, Aylin Yener
ENTCS
2000
81views more  ENTCS 2000»
13 years 4 months ago
Secrecy, Group Creation
We lift Cardelli, Ghelli and Gordon's secrecy group creation operator [1] to a relative of the spicalculus that supports symmetric key cryptography, and show a natural extens...
Luca Cardelli, Andy Gordon, Giorgio Ghelli
ENTCS
2007
88views more  ENTCS 2007»
13 years 4 months ago
Keeping Secrets in Resource Aware Components
We present a powerful and flexible method for automatically checking the secrecy of values inside components. In our framework an attacker may monitor the external communication ...
Tom Chothia, Jun Pang, Muhammad Torabi Dashti
CORR
2007
Springer
114views Education» more  CORR 2007»
13 years 4 months ago
On the Throughput of Secure Hybrid-ARQ Protocols for Gaussian Block-Fading Channels
—The focus of this paper is an information-theoretic study of retransmission protocols for reliable packet communication under a secrecy constraint. The hybrid automatic retransm...
Xiaojun Tang, Ruoheng Liu, Predrag Spasojevic, H. ...
CORR
2006
Springer
126views Education» more  CORR 2006»
13 years 4 months ago
The Gaussian Multiple Access Wire-Tap Channel
We consider the General Gaussian Multiple Access Wire-Tap Channel (GGMAC-WT). In this scenario, multiple users communicate with an intended receiver in the presence of an intellige...
Ender Tekin, Aylin Yener
CORR
2008
Springer
98views Education» more  CORR 2008»
13 years 4 months ago
Secrecy in Cooperative Relay Broadcast Channels
We investigate the effects of user cooperation on the secrecy of broadcast channels by considering a cooperative relay broadcast channel. We show that user cooperation can increase...
Ersen Ekrem, Sennur Ulukus
CORR
2008
Springer
105views Education» more  CORR 2008»
13 years 4 months ago
Success Exponent of Wiretapper: A Tradeoff between Secrecy and Reliability
Equivocation has been widely used as a measure of security after Shannon[10]. For an infinite system such as the wiretap channel defined in [2], equivocation is unbounded and so e...
Chung Chan
FSTTCS
2006
Springer
13 years 8 months ago
Computationally Sound Symbolic Secrecy in the Presence of Hash Functions
The standard symbolic, deducibility-based notions of secrecy are in general insufficient from a cryptographic point of view, especially in presence of hash functions. In this paper...
Véronique Cortier, Steve Kremer, Ralf K&uum...
CSL
2006
Springer
13 years 8 months ago
Relating Two Standard Notions of Secrecy
Abstract. Two styles of definitions are usually considered to express that a security protocol preserves the confidentiality of a data s. Reachability-based secrecy means that s sh...
Véronique Cortier, Michaël Rusinowitch...
FSTTCS
2003
Springer
13 years 9 months ago
Tagging Makes Secrecy Decidable with Unbounded Nonces as Well
Tagging schemes have been used in security protocols to ensure that the analysis of such protocols can work with messages of bounded length. When the set of nonces is bounded, this...
Ramaswamy Ramanujam, S. P. Suresh