Title :
On secrecy above secrecy capacity
Author :
Rajesh, Ramesh ; Shah, S.M. ; Sharma, Vishal
Author_Institution :
CABS, DRDO, Bangalore, India
Abstract :
We consider secrecy obtained when one transmits on a Gaussian Wiretap channel above the secrecy capacity. Instead of equivocation, we consider probability of error as the criterion of secrecy. The usual channel codes are considered for transmission. The rates obtained can reach the channel capacity. We show that the “confusion” caused to the Eve when the rate of transmission is above capacity of the Eve´s channel is similar to the confusion caused by using the wiretap channel codes used below the secrecy capacity.
Keywords :
Gaussian channels; channel capacity; channel coding; cryptography; error statistics; Eve channel; Gaussian wiretap channel; channel capacity; error probability; secrecy above secrecy capacity; wiretap channel codes; Decoding; Encoding; Fading; Receivers; Reliability; Security; Zinc; Equivocation; Probability of error; Secrecy; Strong converse;
Conference_Titel :
Communication Systems (ICCS), 2012 IEEE International Conference on
Conference_Location :
Singapore
Print_ISBN :
978-1-4673-2052-8
DOI :
10.1109/ICCS.2012.6406111