We give a constructive characterization for the capacity of wireless broadcast networks that are prone to Byzantine attacks. The adversary controls a single node in the network and can modify the packets flowing through the node. The central trade-off in such a scenario is that of security

. Furthermore, we show how to select optimal parameters and evaluate both minimum minutiae match rates and minimum number of minutiae needed to obtain an appropri-ate security level. Our results quantify the security capacity of the fuzzy fingerprint vault and provide important tools for selection of suitable

Abstract not found

Estimation des prix de parité du riz et du maïs en 2009 au Burkina Par: Eric Pale (SIM-Burkina) Les documents du PRESAO sont disponibles à

Estimation des prix de parité du riz et du maïs en 2009 en Côte d’Ivoire Par:

results on wiretap and broadcast channels for a considerably strengthened definition of secrecy capacity. Index Terms- Cryptography, secret-key agreement, uncondi-tional security, privacy amplification, wiretap channel, secrecy capacity, RCnyi entropy, universal hashing, quantum cryptogra-phy. I.

The role of multiple antennas for secure communication is investigated within the framework of Wyner’s wiretap channel. We characterize the secrecy capacity in terms of generalized eigenvalues when the sender and eavesdropper have multiple antennas, the intended receiver has a single antenna

We consider the secure transmission of information over an ergodic fading channel in the presence of an eavesdropper. Our eavesdropper can be viewed as the wireless counterpart of Wyner’s wiretapper. The secrecy capacity of such a system is characterized under the assumption of asymptotically long

with independent subchannels is first studied, which serves as an information-theoretic model for the fading BCC. The secrecy capacity region of the parallel BCC is established. This result is then specialized to give the secrecy capacity region of the parallel BCC with degraded subchannels. The secrecy capacity

. Disclosure also reduces the risk bearing capacity available through market makers. If initial information asymmetry is large, reducing it will increase the current price of the security. However, the maximum current price occurs with some asymmetry of information: further reduc-tion of information asymmetry