公开(公告)号：US20240005007A1

公开(公告)日：2024-01-04

申请号：US18469807

申请日：2023-09-19

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Haiwu CHEN ,  Honghong DONG ,  Bin CAO

IPC: G06F21/57 ,  G06F21/64 ,  G06F21/60

CPC classification number: G06F21/575 ,  G06F21/64 ,  G06F21/602

Abstract: A secure boot method. The method may be performed by a communication device. According to the method, the communication device can flexibly perform secure boot by using different cryptographic algorithms based on different security requirements, to ensure security of the communication device. The communication device may obtain external secure boot code (ESBC). The ESBC includes a code segment of a first cryptographic algorithm. After the ESBC is obtained, the communication device may perform an integrity check on the ESBC, and after the integrity check on the ESBC succeeds, verify a signature of next-level software based on the first cryptographic algorithm. When a cryptographic algorithm used by the communication device cannot meet a security requirement, the ESBC may be obtained, and the first cryptographic algorithm included in the ESBC is used to perform the secure boot, to meet the security requirement.

公开(公告)号：US20220245286A1

公开(公告)日：2022-08-04

申请号：US17726605

申请日：2022-04-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Haiwu CHEN ,  Bin CAO ,  Mengnan ZHANG ,  Jianying QIAN

IPC: G06F21/64 ,  H04L9/32

Abstract: A software verification method and apparatus are provided. The method includes: reading flag information, where the flag information is used to indicate a target digital certificate; selecting one of a plurality of digital certificates as a target digital certificate based on the flag information, where the plurality of digital certificates include a first digital certificate and a second digital certificate, and the target digital certificate includes a cryptographic resource; and verifying software deployed on a device based on the cryptographic resource. Using the foregoing technical solution can ensure continuity of the software verification service in the device.

公开(公告)号：US20180308415A1

公开(公告)日：2018-10-25

申请号：US16024758

申请日：2018-06-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ching Hsiang HSU ,  Tianyi LO ,  Jun LIU ,  Hengshun KUAN ,  Bin CAO ,  Xialin GAN

IPC: G09G3/20 ,  G09G3/36

CPC classification number: G09G3/2014 ,  G02F1/13 ,  G09G3/36 ,  G09G3/3648 ,  G09G2310/08 ,  G09G2320/0252 ,  G09G2320/0285 ,  G09G2320/103 ,  G09G2340/02 ,  G09G2340/16

Abstract: A display driving apparatus and a display driving method are provided. The display driving apparatus includes a compression and decompression unit, a storage unit, a data selection unit, and a display acceleration unit. When a current frame correlates with a preceding frame, and the current frame is dynamic relative to the preceding frame, the data selection unit obtains a compensated preceding frame by means of calculation according to the current frame, a decompressed current frame, and a decompressed preceding frame, and the display acceleration unit determines an overdrive value according to the compensated preceding frame and the current frame. It may be learned from the foregoing description that no compression error is involved in an overdrive value determining process, an overdrive mechanism may be still used to determine a grayscale value of a displayed pixel. Therefore, display quality of a dynamic image is improved.

公开(公告)号：US20240267319A1

公开(公告)日：2024-08-08

申请号：US18638411

申请日：2024-04-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Di WU ,  Bin CAO ,  Yijiong ZHANG

IPC: H04L45/02

CPC classification number: H04L45/04

Abstract: This application discloses a remote attestation method, apparatus, device, and system, and a readable storage medium. The method includes: A first network element device having a route reflection function sends, to a second network element device through a BGP connection, a first BGP packet used to query measurement information of the second network element device. A BGP connection for route reflection is established between the first network element device and the second network element device. The first network element device receives, through the BGP connection, a second BGP packet sent by the second network element device, and parses the second BGP packet to obtain the measurement information carried in the second BGP packet. The first network element device compares the measurement information and a remote attestation baseline file, to obtain a remote attestation result.