A Covert Channel Over VoLTE via Adjusting Silence Periods
Covert channels represent unforeseen communication methods that exploit authorized overt communication as the carrier medium for covert messages. Covert channels can be a secure and effective means of transmitting confidential information hidden in overt traffic. For covert timing channel, the cover...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2018-01-01
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| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/8288828/ |
| _version_ | 1818415518153965568 |
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| author | Xiaosong Zhang Yu-An Tan Chen Liang Yuanzhang Li Jin Li |
| author_facet | Xiaosong Zhang Yu-An Tan Chen Liang Yuanzhang Li Jin Li |
| author_sort | Xiaosong Zhang |
| collection | DOAJ |
| description | Covert channels represent unforeseen communication methods that exploit authorized overt communication as the carrier medium for covert messages. Covert channels can be a secure and effective means of transmitting confidential information hidden in overt traffic. For covert timing channel, the covert message is usually modulated into inter-packet delays (IPDs) of legitimate traffic, which is not suitable for voice over LTE (VoLTE) since the IPDs of VoLTE traffic are fixed to lose the possibility of being modulated. For this reason, we propose a covert channel via adjusting silence periods, which modulates covert message by the postponing or extending silence periods in VoLTE traffic. To keep the robustness, we employ the Gray code to encode the covert message to reduce the impact of packet loss. Moreover, the proposed covert channel enables the tradeoff between the robustness and voice quality which is an important performance indicator for VoLTE. The experiment results show that the proposed covert channel is undetectable by statistical tests and outperforms the other covert channels based on IPDs in terms of robustness. |
| first_indexed | 2024-12-14T11:36:16Z |
| format | Article |
| id | doaj.art-37d3583fa5dd4fef97abbd1f842a17a9 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-14T11:36:16Z |
| publishDate | 2018-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-37d3583fa5dd4fef97abbd1f842a17a92022-12-21T23:03:02ZengIEEEIEEE Access2169-35362018-01-0169292930210.1109/ACCESS.2018.28027838288828A Covert Channel Over VoLTE via Adjusting Silence PeriodsXiaosong Zhang0https://orcid.org/0000-0001-9028-9562Yu-An Tan1Chen Liang2Yuanzhang Li3Jin Li4School of Computer Science and Technology, Beijing Institute of Technology, Beijing, ChinaSchool of Computer Science and Technology, Beijing Institute of Technology, Beijing, ChinaSchool of Computer Science and Technology, Beijing Institute of Technology, Beijing, ChinaSchool of Computer Science and Technology, Beijing Institute of Technology, Beijing, ChinaSchool of Computer Science, Guangzhou University, Guangzhou, ChinaCovert channels represent unforeseen communication methods that exploit authorized overt communication as the carrier medium for covert messages. Covert channels can be a secure and effective means of transmitting confidential information hidden in overt traffic. For covert timing channel, the covert message is usually modulated into inter-packet delays (IPDs) of legitimate traffic, which is not suitable for voice over LTE (VoLTE) since the IPDs of VoLTE traffic are fixed to lose the possibility of being modulated. For this reason, we propose a covert channel via adjusting silence periods, which modulates covert message by the postponing or extending silence periods in VoLTE traffic. To keep the robustness, we employ the Gray code to encode the covert message to reduce the impact of packet loss. Moreover, the proposed covert channel enables the tradeoff between the robustness and voice quality which is an important performance indicator for VoLTE. The experiment results show that the proposed covert channel is undetectable by statistical tests and outperforms the other covert channels based on IPDs in terms of robustness.https://ieeexplore.ieee.org/document/8288828/Covert channelVoLTEvoice activity detectionsilence period |
| spellingShingle | Xiaosong Zhang Yu-An Tan Chen Liang Yuanzhang Li Jin Li A Covert Channel Over VoLTE via Adjusting Silence Periods IEEE Access Covert channel VoLTE voice activity detection silence period |
| title | A Covert Channel Over VoLTE via Adjusting Silence Periods |
| title_full | A Covert Channel Over VoLTE via Adjusting Silence Periods |
| title_fullStr | A Covert Channel Over VoLTE via Adjusting Silence Periods |
| title_full_unstemmed | A Covert Channel Over VoLTE via Adjusting Silence Periods |
| title_short | A Covert Channel Over VoLTE via Adjusting Silence Periods |
| title_sort | covert channel over volte via adjusting silence periods |
| topic | Covert channel VoLTE voice activity detection silence period |
| url | https://ieeexplore.ieee.org/document/8288828/ |
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