Survey on key technologies of covert channel in ubiquitous network environment
Fenghua LI, Chaoyang LI, Chao GUO, Zifu LI, Liang FANG, Yunchuan GUO
Journal on Communications . 2022, (4): 186 -201 .  DOI: 10.11959/j.issn.1000-436x.2022072