公开(公告)号：US09985986B2

公开(公告)日：2018-05-29

申请号：US15306094

申请日：2015-06-26

Applicant: University of Electronic Science and Technology of China

Inventor： Hong Wen ,  Jie Tang ,  Da Xiang ,  Huanhuan Song

IPC: H04L29/06 ,  H04B7/06 ,  H04B7/0456

CPC classification number: H04L63/1475 ,  H04B7/0456 ,  H04B7/0617 ,  H04L1/06 ,  H04L9/0875 ,  H04L63/0428 ,  H04W12/12

Abstract: The present invention discloses an unconditional secure communication method based on beam-forming and security code, which comprises the following steps of: Legitimate users send to the signal pie-encoded and modulated, meanwhile eavesdropper receives signals and calculates the bit error rate; computing security coding parameters, legitimate received users send pilot sequence, and legitimate sending users estimate legitimate channel, and extract information on legal channel coding and modulating signal was SVD pre-coding and sending; the signal was decoded, that will be judgment and demodulation then the signal after decoding do security code is transmitted to message or tapping, due to lack of legal channel information, eavesdropper cannot lift pre-coding processing of the received signal with the high bit error rate. This method can establish advantages channel of the wiretap model channel and to ensure that legitimate users can receive signals at the lower bit error rate.

公开(公告)号：US11483704B2

公开(公告)日：2022-10-25

申请号：US17134475

申请日：2020-12-27

Applicant: University of Electronic Science and Technology of China ,  Science & Technology Department of Sichuan Province

Inventor： Jie Tang ,  Liang Chen ,  Hong Wen ,  Xinchen Xu ,  Huanhuan Song ,  Kaiyu Qin

IPC: H04W12/03 ,  H04W12/033 ,  H04W12/122 ,  H04L9/06

Abstract: A method for physical layer secure transmission against an arbitrary number of eavesdropping antennas includes: S1: communication between legitimate transmitter Alice and legitimate receiver Bob is confirmed; S2: Alice randomly generates a key bit bk with MS bits, maps the key bit bk into a key symbol K, and performs an XOR on the key bit bk and to-be-transmitted confidential information b to obtain an encrypted bits bs; S3: Bob transmits a pilot sequence to Alice, and Alice calculates a candidate precoding space W and transmits modulated symbol streams s=(s1, . . , sN) by using precoding W(e); S4: Bob measures received signal strength of each antenna, estimates the corresponding antenna vector e, inversely maps the vector e to obtain key symbols and key bits, and demodulates the received symbol streams in sequence at each activated antenna to obtain demodulated ciphertext bits; S5: Bob performs an XOR on observed key bits and the demodulated ciphertext bits to obtain the confidential information.

公开(公告)号：US11374969B2

公开(公告)日：2022-06-28

申请号：US17298610

申请日：2019-12-27

Applicant: UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA

Inventor： Jie Tang ,  Hong Wen ,  Huanhuan Song ,  Feiyi Xie ,  Yi Chen

IPC: H04L9/40 ,  G06N3/04

Abstract: A quantitative method for the security access strategy selection of the edge computing terminals includes the following steps: S1. Quantifying and ranking the security risks according to the terminals and data application requirements under the edge computing system. S1. Quantifying and ranking the security risks according to the terminals and data application requirements under the edge computing system. S2. Calculating the security quantification value of terminal and data application. S3. Giving the weight coefficients for the security risk protection of the security access strategies for the terminal and data in the edge computing side. S4. Give the corresponding value of each security strategy to the corresponding terminal and data security protection. S5. Select the corresponding algorithm according to the data set in S4 to select the security strategies.

公开(公告)号：US20210204117A1

公开(公告)日：2021-07-01

申请号：US17134475

申请日：2020-12-27

Applicant: University of Electronic Science and Technology of China ,  Science & Technology Department of Sichuan Province

Inventor： Jie Tang ,  Liang Chen ,  Hong Wen ,  Xinchen Xu ,  Huanhuan Song ,  Kaiyu Qin

IPC: H04W12/033 ,  H04L9/06 ,  H04W12/122

Abstract: A method for physical layer secure transmission against an arbitrary number of eavesdropping antennas includes: S1: communication between legitimate transmitter Alice and legitimate receiver Bob is confirmed; S2: Alice randomly generates a key bit bk with MS bits, maps the key bit bk into a key symbol K, and performs an XOR on the key bit bk and to-be-transmitted confidential information b to obtain an encrypted bits bs; S3: Bob transmits a pilot sequence to Alice, and Alice calculates a candidate precoding space W and transmits modulated symbol streams s=(s1, . . , sN) by using precoding W(e); S4: Bob measures received signal strength of each antenna, estimates the corresponding antenna vector e, inversely maps the vector e to obtain key symbols and key bits, and demodulates the received symbol streams in sequence at each activated antenna to obtain demodulated ciphertext bits; S5: Bob performs an XOR on observed key bits and the demodulated ciphertext bits to obtain the confidential information.