An Encryption and Decryption Method for Secure Communication of Electromagnetic Vortex System
A technology for secure communication, encryption and decryption, which is applied in the field of non-zero topology load value for secure communication, can solve problems such as encryption and cracking, and achieve the effect of physical layer security protection
Inactive Publication Date: 2021-03-09
NANCHANG UNIV
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Problems solved by technology
However, with the development of software radio and intelligent hardware technology, the encryption at the network layer, transport layer, and application layer may be cracked. Therefore, it is necessary to consider encrypting at a lower physical layer to further enhance confidentiality.
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[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0042] like Figure 1-3 As shown, embodiments of the present invention include:
[0043] An encryption and decryption method for secure communication of an electromagnetic vortex system, including two processes of link establishment and data transmission, such as figure 1 As shown, it mainly includes the following steps:
[0044] Step 1 Key generation: The receiving end randomly generates a pair of public key and private key according to the asymmetric encryption algorithm. Taking the RSA encryption algorithm as a...
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The invention discloses an encryption and decryption method for secure communication of an electromagnetic vortex system, which belongs to the field of wireless communication and mainly includes the following steps: key generation, public key transmission, public key reception, link encoding, encryption transmission, reception and decryption, Link decoding, communication link construction, source coding and encryption, signal modulation and transmission, signal reception and demodulation, decryption and source decoding. Through the above steps, the secure communication of the electromagnetic vortex system is realized. This method uses asymmetric encryption for the physical layer encryption of the communication link. Since the private key is at the receiving end, the eavesdropper cannot obtain the private key, and thus cannot decrypt and obtain the correct vortex antenna pointing and azimuth information and the vortex modulation and demodulation selected. The non-zero topological charge value, the communication link and vortex demodulation scheme cannot be established. Therefore, this method provides a physical layer security guarantee for the secure communication of the electromagnetic vortex system from two aspects of the transmission mechanism and the demodulation method.
Description
technical field [0001] The invention belongs to the field of wireless communication, and in particular relates to an encryption and decryption method for secret communication by using vortex antenna pointing and azimuth information of an electromagnetic vortex system and a non-zero topological charge value selected for vortex modulation and demodulation. Background technique [0002] The rapid development of wireless communication technology poses new challenges to the capacity and security of communication systems. The electromagnetic vortex system, which uses orbital angular momentum multiplexing to increase communication capacity, is currently limited to line-of-sight communication, and it is easy for eavesdroppers to illegally receive information. Therefore, communication security issues need to be considered. Traditional communication security technology mainly focuses on the network layer, transport layer and application layer, and the electromagnetic vortex system ca...
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IPC IPC(8): H04W12/02H04L29/06H04L9/08
CPCH04L9/0861H04L9/0869H04L63/0442H04W12/02
Inventor 朱启标陈素华谢家靖
Owner NANCHANG UNIV