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1. 发明公开

EP3480998A1 OPERATION METHOD AND SECURITY CHIP 有权
公开(公告)号：EP3480998A1
公开(公告)日：2019-05-08
申请号：EP17833536.0
申请日：2017-07-25
申请人： Huawei Technologies Co., Ltd.
发明人： HU, Cui , TAN, ZhuFeng , SUN, Shaojie
IPC分类号： H04L9/00
摘要： Embodiments of the present invention disclose an operation method. The method is applied to a security chip, the security chip includes an input/output interface, a decryption circuit, a microprocessor, and an arithmetic unit. The method includes: obtaining, by the input/output interface, an input ciphertext; performing, by the decryption circuit, a modular exponentiation operation according to the ciphertext and a preset operation parameter; and using, by the microprocessor, an operation result obtained after the modular exponentiation operation as a plaintext obtained after decryption. The performing, by the decryption circuit, a modular exponentiation operation according to the ciphertext and a preset operation parameter is specifically: breaking, by the decryption circuit, the modular exponentiation operation into multiple iterative first operations, where the first operation is a modular square operation or a modular multiplication operation; sending, by the decryption circuit, the ciphertext and the operation parameter to the arithmetic unit; and performing, by the arithmetic unit, the first operation according to the ciphertext and the operation parameter to obtain a modular square value or a modular multiplication value. Correspondingly, the embodiments of the present invention further disclose a security chip. According to the present invention, an SPA attack can be resisted and security can be improved.

2. 发明公开

EP4090024A1 IMAGE TRANSMISSION METHOD AND APPARATUS 审中-公开
公开(公告)号：EP4090024A1
公开(公告)日：2022-11-16
申请号：EP20921135.8
申请日：2020-02-28
申请人： Huawei Technologies Co., Ltd.
发明人： HU, Cui , CHEN, Jingwei , CHEN, Liang , HE, Juanpeng , LIAN, Shuo , WANG, Shuangquan
IPC分类号： H04N19/20 , H04N19/40
摘要： Embodiments of this application provide an image transmission method and apparatus. The method includes: converting a first high-resolution image into a first low-resolution image, where first resolution of the first high-resolution image is higher than second resolution of the first low-resolution image; encoding the first low-resolution image to obtain a first bitstream; obtaining a second high-resolution image, where third resolution of the second high-resolution image is higher than the second resolution, and the second high-resolution image includes high-frequency information of the first high-resolution image and excludes low-frequency information of the first high-resolution image; obtaining an image residual between the first high-resolution image and the second high-resolution image, where the image residual is used to reflect the low-frequency information of the first high-resolution image; encoding the image residual to obtain a second bitstream; and sending the first bitstream and the second bitstream. In embodiments of this application, a transmission bit rate for transmitting a high-resolution video can be greatly reduced, and an application scenario of transmitting the high-resolution video in real time can be met.

3. 发明公开

EP4198869A1 ELECTRONIC APPARATUS, AND IMAGE PROCESSING METHOD FOR ELECTRONIC APPARATUS 审中-实审
公开(公告)号：EP4198869A1
公开(公告)日：2023-06-21
申请号：EP20953587.1
申请日：2020-09-16
申请人： Huawei Technologies Co., Ltd.
发明人： HUANG, Fei , HU, Cui , ZHANG, Weicheng , CHU, Jieyu , QIN, Qiushi
IPC分类号： G06T1/20
摘要： Embodiments of this application provide an electronic apparatus and an image processing method of the electronic apparatus. The electronic apparatus includes: an artificial intelligence AI processor, configured to perform first image signal processing on a first image signal to obtain a second image signal, where the first image signal is obtained based on image data output by an image sensor; and an image signal processor ISP, configured to perform second image signal processing on the second image signal to obtain an image processing result. In this way, image processing can be flexibly performed by the ISP in combination with the AI processor, and the image processing result is improved.

4. 发明公开

EP3471042A1 MOBILE PAYMENT METHOD, SYSTEM ON CHIP AND TERMINAL 审中-公开
公开(公告)号：EP3471042A1
公开(公告)日：2019-04-17
申请号：EP17818842.1
申请日：2017-02-27
申请人： Huawei Technologies Co., Ltd.
发明人： TAN, Zhufeng , HU, Cui , SUN, Shaojie
IPC分类号： G06Q20/40
摘要： This application relates to the field of communications technologies, and discloses a mobile payment method, a system on chip, and a terminal, so as to resolve a problem of a relatively severe security threat that is caused because an external memory is entirely replaced with an earlier-version memory on which authentication may succeed. The method is applied to a system on chip SOC, where the SOC includes a secure element SE integrated into the SOC, and the method includes: receiving, by the SE, a transaction request; obtaining, by the SE, a first check value from an external memory; performing a security check on the external memory according to the first check value and a second check value that is stored locally in the SOC; and if the external memory passes the security check, obtaining, by the SE, first transaction data from the external memory, and processing the transaction request based on the first transaction data. This application is applied to a mobile payment process.

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