2018 Fiscal Year Annual Research Report
Study on a physical layer security framework for establishing trustworthy IoT systems
| Project/Area Number |
18H06470
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| Allocation Type | Single-year Grants |
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| Research Institution | Toyo University |
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Principal Investigator |
朱 金暁 東洋大学, 情報連携学部, 助教 (30754329)
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| Project Period (FY) |
2018-08-24 – 2020-03-31
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| Keywords | Authentication / Physical layer security / Dual-hop networks / non-asymptotic rate |
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| Outline of Annual Research Achievements |
平成３０年度（半年間）は主に、下記研究課題について実施した。
1. 秘密通信（PLS based confidential communication）：I have investigated the performance of finite-length coding, i.e., second-order coding rate, for the basic channel models, including discrete memoryless wiretap channels and Gaussian wiretap channels. Then, I tried to expand these performance results for a more realistic model for wireless networks, i.e., channel with random state.
2.無線物理層認証（PLS based identification and authentication）：Dual-hop communication means a communication between two end-nodes is established through an intermediate relay node. Dual-hop communication is of great significance for IoT networks as there usually exist a lot of IoT devices with limited power-supply and thus a direct end-to-end communication might be difficult. Therefore, for such dual-hop wireless networks with untrusted relay nodes, we have proposed a physical layer authentication scheme and analyzed its performance both theoretically and numerically.
3. 秘密鍵生成（PLS based secret key generation）：I have investigated the random source and the privacy amplification scheme for key generation. Random source is a common source between the legitimate nodes with limited knowledge of the source known at a third-party node. We have investigated the possible random source in wireless channels, such as received signal strength (RSS) and channel impulse response (CIR). Privacy amplification, which extracts a secret key from the identical random source, is an important step in key generation.
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| Current Status of Research Progress |
Current Status of Research Progress
1: Research has progressed more than it was originally planned.
Reason
Firstly, besides the investigation we have planed for the secret key generation in the first half year, we have also conducted the research of another two topics as described in the above section. Secondly, instead of a conference paper in the original plan, we have published a journal paper.
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| Strategy for Future Research Activity |
平成31年度は、下記研究課題について実施する。
1. 秘密通信: We will adopt a more practical wireless channel model, channel with random state, and analyze the performance of finite-length coding rate for such a channel. Both theoretical analysis and numerical discussion will be conducted for such a performance.
2. 無線物理層認証: We will keep on investigating various physical layer (or link) properties, including RSS, CIR, delay and carrier frequency offset, that could be made use to identify each device from new perspective. Our investigation will be conducted not only through existing papers but also by designing simulators (or experiments if possible).
3. 秘密鍵生成: In key generation, channels are probed frequently to gather the common randomness. A fast probing rate will easily result in redundant estimates while a slow probing rate will limit the capacity to exploit any added randomness. We will study the tradeoff between the probing rate and key rate.
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Research Products
(1 results)
