Physical layer secure communication
US-2024414666-A1 · Dec 12, 2024 · US
Method for generating consistent cryptographic key based on wireless channel features
US9002011B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9002011-B2 |
| Application number | US-201114130308-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 30, 2011 |
| Priority date | Jun 30, 2011 |
| Publication date | Apr 7, 2015 |
| Grant date | Apr 7, 2015 |
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Abstract
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The present invention discloses a method for generating a consistent cryptographic key based on wireless channel features. First of all, channel estimated values ĥ a , ĥ b and channel estimate mean square error MSE are obtained through channel estimate, and then quantized channel eigenvectors {tilde over (h)} a and {tilde over (h)} b are obtained through quantization coding; next, inconsistency between {tilde over (h)} b and {tilde over (h)} a is equivalent to obtaining {tilde over (h)} b at end B through virtual channel noise adding the channel eigenvector {tilde over (h)} a sent by end A, and Signal-to-Noise ratio SNR Γ of the virtual channel is determined; a proper coding mode ENC is determined according to the virtual channel SNR Γ; both communication parties perform corresponding coding and decoding according to ENC and thereby obtain an estimated value {tilde over (ĥ)} a of {tilde over (h)} a ; finally, a cryptographic key generating function is applied to {tilde over (h)} a and {tilde over (ĥ)} a , whereby a cryptographic key Kc is obtained. The present invention increases the validity of consistent dynamic cryptographic key generating and achieves information security and privacy at the physical layer.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for generating a consistent cryptographic key based on wireless channel features, characterized by comprising: (1) according to a preset channel estimate method CE, both communication ends A and B respectively performing channel estimate to a current channel, obtaining channel estimated values ĥ a , ĥ b and channel estimate mean square error MSE, and defining MSE=f 1 (CE,γ) according to current channel Signal-to-Noise ratio (SNR) γ, where f 1…
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Classifications
Electricity · mapped topic
- H04L9/0875Primary
Electricity · mapped topic
- H04W74/00Primary
Electricity · mapped topic
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- What does patent US9002011B2 cover?
- The present invention discloses a method for generating a consistent cryptographic key based on wireless channel features. First of all, channel estimated values ĥ a , ĥ b and channel estimate mean square error MSE are obtained through channel estimate, and then quantized channel eigenvectors {tilde over (h)} a and {tilde over (h)} b are obtained through quantization coding; next, inconsiste…
- Who is the assignee on this patent?
- Peng Yuexing, Zheng Kan, Li Guangwei, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification H04L9/0875. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Apr 07 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).