Low-complexity index assignments for secure quantization

Author

Almeida, João ; Maierbacher, Gerhard ; Barros, João

Author_Institution

Dept. de Cienc. de Comput., Univ. do Porto, Porto

fYear

2009

fDate

18-20 March 2009

Firstpage

930

Lastpage

934

Abstract

Focusing on the design of scalar quantizers for secure communication in a wiretap environment we propose a low-complexity encoding method that minimizes the end-to-end distortion between legitimate terminals while maximizing the distortion at the eavesdropping receiver. The key idea is to generate confusion by means of randomized index assignments. A simple iterative optimization scheme is shown to yield low distortion mappings with noticeable privacy benefits.

Keywords

computational complexity; cryptography; data privacy; encoding; iterative methods; optimisation; quantisation (signal); telecommunication security; cryptography; data privacy; eavesdropping receiver; end-to-end distortion minimization; iterative optimization scheme; legitimate terminal; low-complexity encoding; randomized index assignment; scalar quantizer design; secure communication; wiretap environment; Cryptography; Data security; Degradation; Error correction codes; Information security; Privacy; Quantization; Source coding; Streaming media; Telecommunication computing;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Sciences and Systems, 2009. CISS 2009. 43rd Annual Conference on

Conference_Location

Baltimore, MD

Print_ISBN

978-1-4244-2733-8

Electronic_ISBN

978-1-4244-2734-5

Type

conf

DOI

10.1109/CISS.2009.5054850

Filename

5054850