TY - JOUR
T1 - An efficient VoLTE covert timing channel for 5 G networks
T2 - RDCTC
AU - Abbas, Mohammed Khudhair
AU - Sandikkaya, Mehmet Tahir
N1 - Publisher Copyright:
© 2022 Elsevier GmbH
PY - 2022/11
Y1 - 2022/11
N2 - Covert Channels are necessary to protect the privacy of individuals as well as to obtain confidentiality to governmental and military agencies. A novel covert timing channel is proposed with three main improvements over the existing ones: Reorder Density (RD) metric-based packet reordering that reduces exposure, introducing Modified Turbo Code (MTC) for efficient encoding, and Discrete Haar Wavelet Transform (DHWT) that increases channel reliability. A threat model is proposed and shown to be inefficient to effectively meet covert channel properties against network jitter, noise, and curious attackers that try to identify a channel exists. Run and test is applied to investigate randomness of the proposed covert channel. The proposed covert channel is adoptable to 5 G VoLTE networks. These proposed strategies significantly improve the robustness while also minimizing the detectability of covert channels in VoLTE.
AB - Covert Channels are necessary to protect the privacy of individuals as well as to obtain confidentiality to governmental and military agencies. A novel covert timing channel is proposed with three main improvements over the existing ones: Reorder Density (RD) metric-based packet reordering that reduces exposure, introducing Modified Turbo Code (MTC) for efficient encoding, and Discrete Haar Wavelet Transform (DHWT) that increases channel reliability. A threat model is proposed and shown to be inefficient to effectively meet covert channel properties against network jitter, noise, and curious attackers that try to identify a channel exists. Run and test is applied to investigate randomness of the proposed covert channel. The proposed covert channel is adoptable to 5 G VoLTE networks. These proposed strategies significantly improve the robustness while also minimizing the detectability of covert channels in VoLTE.
KW - 5G networks
KW - Covert timing channels
KW - Discrete Haar wavelet transform, threat model, randomness test
KW - Modified turbo code
KW - Reorder density
KW - VoLTE, inter-packet delays
UR - http://www.scopus.com/inward/record.url?scp=85139593133&partnerID=8YFLogxK
U2 - 10.1016/j.ijleo.2022.170076
DO - 10.1016/j.ijleo.2022.170076
M3 - Article
AN - SCOPUS:85139593133
SN - 0030-4026
VL - 270
JO - Optik
JF - Optik
M1 - 170076
ER -