DocumentCode :
2983733
Title :
Wiretap channel type II with an active eavesdropper
Author :
Aggarwal, Vaneet ; Lai, Lifeng ; Calderbank, A. Robert ; Poor, H. Vincent
Author_Institution :
Dept. of Electr. Eng., Princeton Univ., Princeton, NJ, USA
fYear :
2009
fDate :
June 28 2009-July 3 2009
Firstpage :
1944
Lastpage :
1948
Abstract :
The wiretap channel type II with an active eavesdropper is considered in this paper. Compared with the eavesdropper model considered in much of the literature, the eavesdropper considered here can not only overhear but also modify the signal transmitted over the channel. Two modification models are considered. In the first model, the eavesdropper erases the bits it observes. In the second model, the eavesdropper modifies the bits it observes. For this channel with memory (introduced by the activity of the eavesdropper), one should conduct the worst case scenario analysis. Novel concatenated coding schemes that provide perfect security for the communications are developed for both models to give bounds on the achievable secrecy rate. The technique to modify the inner code to maintain the secrecy properties of the outer code may be of independent interest.
Keywords :
channel coding; concatenated codes; telecommunication security; active eavesdropper; concatenated coding; signal modification; telecommunication security; wiretap channel type II; worst case scenario analysis; Concatenated codes; Decoding; Entropy; Error correction; Information security; Performance analysis; Random variables; Transmitters; Uncertainty;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Information Theory, 2009. ISIT 2009. IEEE International Symposium on
Conference_Location :
Seoul
Print_ISBN :
978-1-4244-4312-3
Electronic_ISBN :
978-1-4244-4313-0
Type :
conf
DOI :
10.1109/ISIT.2009.5205631
Filename :
5205631
Link To Document :
بازگشت