Network Coding and Wireless Physical-layer ... - Jacobs University

76
Contained in this part are two network-coding-related ideas used for security enhancement
of wireless physical-layer secret-key generation (WPSG). The first one employs
network-coding-like information mixing in the security protocol for pilot symbol transmission
in WPSG. The second one adopts the secret sharing concept used in secure network
coding as the basis of what we call “physical-layer key encoding.” With this encoding,
the eavesdropper may correctly estimate some key symbols, yet knows nothing about the
secret message. These two points are discussed in Chapter 6 and 7, respectively.
Some other aspects of WPSG are also discussed.
In Chapter 6, an informationtheoretic
analysis of key generation, key extension in relay networks, and some other
security protocols are presented. In Chapter 7, the scalable security concept is formally
derived and applied to WPSG.
Chapter 8 summarizes all topics discussed so far and gives some ideas for further
research.