Title :
Rate-distortion theory for the Shannon cipher system
Author :
Yamamoto, Hirosuke
Author_Institution :
Dept. of Math. Eng. & Inf. Phys., Tokyo Univ., Japan
fDate :
27 Jun-1 Jul 1994
Abstract :
Considers Shannon´s cipher system with a memoryless broadcast channel. The source output sequence {Sl}t∞=1 is independent drawings of a random variable S taking values in S, and the key Wk is a random variable which is independent of S. For simplicity, we assume that the main channel (X→Y) is less noisy than the wiretap channel (X→Z). The security of the system can be measured by the uncertainty or the attainable minimum distortion of the wiretapper who gets only ZN. For each case, we define the admissible region
Keywords :
cryptography; memoryless systems; rate distortion theory; telecommunication channels; Shannon cipher system; main channel; memoryless broadcast channel; minimum distortion; random variable; rate-distortion theory; source output sequence; system security; uncertainty; wiretap channel; Broadcasting; Chromium; Decoding; Distortion measurement; Physics; Random variables; Rate-distortion; Security; Uncertainty; Zinc;
Conference_Titel :
Information Theory, 1994. Proceedings., 1994 IEEE International Symposium on
Conference_Location :
Trondheim
Print_ISBN :
0-7803-2015-8
DOI :
10.1109/ISIT.1994.394669
