Low-power secret-key agreement over OFDM

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2013

Autores

Renna, F (Autor) FCUP; Laurenti, N (Autor) Outra; Tomasin, S (Autor) Outra; Baldi, M (Autor) Outra; Maturo, N (Autor) Outra; Bianchi, M (Autor) Outra; Chiaraluce, F (Autor) Outra; Bloch, M (Autor) Outra

Ata de Conferência Internacional

Título: HotWiSec 2013 - Proceedings of the 2013 ACM Workshop on Hot Topics on Wireless Network Security and Privacy

Páginas: 43-47

2013 2nd ACM Workshop on Hot Topics on Wireless Network Security and Privacy, HotWiSec 2013

Budapest, 19 April 2013 through 19 April 2013

Indexação

Scopus - 9 Citações

Outras Informações

ID Authenticus: P-009-52E

DOI: 10.1145/2463183.2463194

Abstract (EN): Information-theoretic secret-key agreement is perhaps the most practically feasible mechanism that provides unconditional security at the physical layer to date. In this paper, we consider the problem of secret-key agreement by sharing randomness at low power over an orthogonal frequency division multiplexing (OFDM) link, in the presence of an eavesdropper. The low power assumption greatly simplifies the design of the randomness sharing scheme, even in a fading channel scenario. We assess the performance of the proposed system in terms of secrecy key rate and show that a practical approach to key sharing is obtained by using low-density parity check (LDPC) codes for information reconciliation. Numerical results confirm the merits of the proposed approach as a feasible and practical solution. Moreover, the outage formulation allows to implement secret-key agreement even when only statistical knowledge of the eavesdropper channel is available. Copyright 2013 ACM.

Idioma: Inglês

Tipo (Avaliação Docente): Científica