Analysis of short blocklength codes for secrecy

• Type: Article in International Scientific Journal
• Date: 2018

Authors

Harrison, WK (Author) Other; Sarmento, D (Author) Other; João P. Vilela (Author) Other; Gomes, MAC (Author) Other

Journal

Title: Eurasip Journal on Wireless Communications and Networking

Vol. 2018

ISSN: 1687-1472

Publisher: Springer Nature

Indexing

ISI Web of Knowledge - 13 Citations

Scopus - 17 Citations

Other information

Authenticus ID: P-00P-T18

DOI: 10.1186/s13638-018-1276-1

Abstract (EN): In this paper, we provide secrecy metrics applicable to physical-layer coding techniques with finite blocklengths over Gaussian and fading wiretap channel models and analyze their secrecy performance over several cases of concatenated code designs. Our metrics go beyond some of the known practical secrecy measures, such as bit error rate and security gap, so as to make lower bound probabilistic guarantees on error rates over short blocklengths both preceding and following a secrecy decoder. Our techniques are especially useful in cases where application of traditional information-theoretic security measures is either impractical or simply not yet understood. The metrics can aid both practical system analysis, including cryptanalysis, and practical system design when concatenated codes are used for physical-layer security. Furthermore, these new measures fill a void in the current landscape of practical security measures for physical-layer security coding and may assist in the wide-scale adoption of physical-layer techniques for security in real-world systems. We also show how the new metrics provide techniques for reducing realistic channel models to simpler discrete memoryless wiretap channel equivalents over which existing secrecy code designs may achieve information-theoretic security.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 15