Title :
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
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;
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
DOI :
10.1109/CISS.2009.5054850
