Title:
SECURITY SYSTEM AND TERMINAL CHIP
Document Type and Number:
WIPO Patent Application WO/2018/090931
Kind Code:
A1
Abstract:
Provided is a security system. The system comprises a security assembly and a clock randomization processing unit, wherein the clock randomization processing unit is used for receiving a clock signal, randomly changing the arrangement of high-level steps or low-level steps in the clock signal, and providing the changed clock signal to the security assembly. The security system in the embodiments of the present invention firstly performs randomization processing on the clock signal before inputting the clock signal into the security assembly, and then inputs the randomized clock signal into the security assembly. The randomized clock signal can lead to irregular working of the internal modules thereof, thereby greatly increasing the difficulty in analyzing a side channel attack and improving the security capability of the security assembly.
Inventors:
LI DECHAO (CN)
LIU YU (CN)
WANG HAOFENG (CN)
LIU YU (CN)
WANG HAOFENG (CN)
Application Number:
PCT/CN2017/111138
Publication Date:
May 24, 2018
Filing Date:
November 15, 2017
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04L9/00
Foreign References:
| CN1190830A | 1998-08-19 | |||
| CN101175268A | 2008-05-07 | |||
| CN103902929A | 2014-07-02 | |||
| CN105704526A | 2016-06-22 | |||
| US8378710B1 | 2013-02-19 |
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