公开(公告)号：US12164605B2

公开(公告)日：2024-12-10

申请号：US17698619

申请日：2022-03-18

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Haibo Hu ,  Huadi Zheng ,  Qingqing Ye ,  Chengfang Fang ,  Jie Shi

IPC: G06F21/10 ,  G06F18/24 ,  G06F21/14 ,  G06F21/54 ,  G06F21/55 ,  G06F21/60 ,  G06F21/62 ,  G06N20/00 ,  G06V10/40 ,  H04L9/40

Abstract: In a data theft prevention method, a data processing apparatus obtains target data, inputs the target data into a recognition model for recognition processing to obtain a first label, where the first label is a label to which the target data belongs. The recognition processing includes: performing, by the recognition model, feature extraction on the target data to obtain a first feature vector; and obtaining, by the recognition model, the first label through prediction based on the first feature vector; and outputs a target label when determining that a second feature vector exists. The second feature vector is a feature vector whose distance from the first feature vector is less than a first threshold. A second label obtained through prediction by using the recognition model is different from the first label and the target label is a label obtained by performing perturbation processing on the first label.

公开(公告)号：US11165767B2

公开(公告)日：2021-11-02

申请号：US16588400

申请日：2019-09-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： ChengKang Chu ,  Jie Shi ,  Chengfang Fang ,  Xiwen Fang

IPC: H04L29/06 ,  H04L9/00 ,  H04L12/28 ,  H04L9/32 ,  H04W12/06

Abstract: An identity authentication method is described. The method includes, when receiving a group joining request that is sent by a first terminal and that is used for joining a trusted group, generating, by a server, a first certificate for the first terminal based on a first version number, and sending them to the first terminal. The method further includes, when determining that a second terminal is removed from the trusted group, updating the first version number to a second version number; and separately generating, by the server based on the second version number, a corresponding second certificate for a terminal not removed from the trusted group; and separately sending the corresponding second certificate and the second version number to the terminal not removed from the trusted group. In this way, during authentication, a terminal may compare a version number of the other party to perform identity authentication, thereby improving authentication efficiency.

公开(公告)号：US20210135858A1

公开(公告)日：2021-05-06

申请号：US17149923

申请日：2021-01-15

Applicant: Huawei Technologies Co., Ltd.

Inventor： Cheng Kang Chu ,  David Naccache ,  Jie Shi ,  Chengfang Fang ,  Xiwen Fang

IPC: H04L9/08 ,  H04L29/06

Abstract: An information processing method, a terminal device, and a network system include encrypting, by a first terminal, an authorization key based on a public key of a second terminal to obtain an authorization key ciphertext corresponding to the second terminal, and sending, by the first terminal, the authorization key ciphertext to the second terminal such that the second terminal decrypts the authorization key ciphertext based on a private key of the second terminal to obtain the authorization key, and then performs file decryption.