Encryption processing device and method capable of defending differential power analysis attack
US9628265B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 2014 |
| Grant date | Apr 18, 2017 |
| Priority date | — |
| Expiry date | Aug 20, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/046
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.