Name
Abstract | ||
|---|---|---|
In this work, the role of noisy feedback in enhancing the secrecy capacity of the wiretap channel is investigated. A model is considered in which the feed-forward and feedback signals share the same noisy channel. More specifically, a di screte memoryless modulo-additive channel with a full-duplex destina- tion node is considered first, and it is shown that a judicious use of feedback increases the perfect secrecy capacity to the capacity of the source-destination channel in the absence of the wiretapper. In the achievability scheme, the feedback signal corresponds to a private key, known only to the destination. Then a half-duplex system is considered, for which a novel feedback technique that always achieves a positive perfect secrecy rate (even when the source-wiretapper channel is less noisy than the source-destination channel) is proposed. These results hinge on the modulo-additive property of the channel, which is exploited by the destination to perform encryption over the channel without revealing its key to the source. |
Year | Venue | Keywords |
|---|---|---|
2007 | Clinical Orthopaedics and Related Research | feed forward,information theory |
Field | DocType | Volume |
Mathematical optimization,Computer security,Secrecy,Binary erasure channel,Computer network,Communication channel,Encryption,Information-theoretic security,Public-key cryptography,Mathematics | Journal | abs/0710.0 |
Citations | PageRank | References |
3 | 0.42 | 8 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Lifeng Lai | 1 | 2289 | 167.78 |
| Hesham El Gamal | 2 | 3049 | 220.37 |
| H. V. Poor | 3 | 25411 | 1951.66 |