The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 18, 2017
Filed:
Jun. 18, 2014
Shenzhen State Micro Technology Co., Ltd., Shenzhen, Guangdong, CN;
Liangqing Wang, Guangdong, CN;
Dawu Gu, Guangdong, CN;
Zheng Guo, Guangdong, CN;
Junrong Liu, Guangdong, CN;
Feng Deng, Guangdong, CN;
SHENZHEN STATE MICRO TECHNOLOGY CO., LTD., Shenzhen, CN;
Abstract
The invention discloses an encryption processing device and a method capable of defending differential power analysis attack. In the encryption processing device provided by an embodiment of the invention, a SecMasking unit is achieved in a structure that a universal random masking technique services as a basis; a SecPrepare unit is achieved in a structure that a bitwise XOR device services as a basis; and a SecSbox unit is achieved in a mode that table look-up results are updated longitudinally and transversely in real time on the basis of a random masking technique. According to the encryption processing device and method, work power consumption of a cryptographic operation equipment circuit can have no relation with operation data and calculation operations. In addition, the encryption processing device and method can be widely used for encrypting and decrypting operation cryptographic equipment needing high safety performance.