Visible to the public Cooperative Two-Key Generation in Source-Type Model With Partial-Trusted Helpers

TitleCooperative Two-Key Generation in Source-Type Model With Partial-Trusted Helpers
Publication TypeConference Paper
Year of Publication2019
AuthorsGong, Shixun, Li, Na, Wu, Huici, Tao, Xiaofeng
Conference Name2019 IEEE/CIC International Conference on Communications in China (ICCC)
ISBN Number978-1-7281-0732-5
Keywordschannel capacity, cooperative communication, cooperative key generation, cooperative two-key generation, Decoding, discrete memoryless sources, five-terminal system, generated keys, Human Behavior, human factors, Indexes, information theoretic security, information-theoretic security, key capacity region, key leakage rate, Metrics, partial-trusted helpers, passive eavesdropper, physical layer security, policy-based governance, pubcrawl, public channel, public key cryptography, Relays, resilience, Resiliency, Scalability, secret keys, security, source coding, source coding scheme, source sequences, source-type model, telecommunication security, Telecommunications, trusted helper, untrusted helper, Upper bound
Abstract

This paper investigates the problem of generating two secret keys (SKs) simultaneously over a five-terminal system with terminals labelled as 1, 2, 3, 4 and 5. Each of terminal 2 and terminal 3 wishes to generate an SK with terminal 1 over a public channel wiretapped by a passive eavesdropper. Terminal 4 and terminal 5 respectively act as a trusted helper and an untrusted helper to assist the SK generation. All the terminals observe correlated source sequences from discrete memoryless sources (DMS) and can exchange information over a public channel with no rate constraint that the eavesdropper has access to. Based on the considered model, key capacity region is fully characterized and a source coding scheme that can achieve the capacity region is provided. Furthermore, expression for key leakage rate is obtained to analyze the security performance of the two generated keys.

URLhttps://ieeexplore.ieee.org/document/8855964
DOI10.1109/ICCChina.2019.8855964
Citation Keygong_cooperative_2019