Method for optimising memory writing in a device
US10459848B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2017 |
| Grant date | Oct 29, 2019 |
| Priority date | — |
| Expiry date | Oct 30, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/2532
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Provided is a method for optimising memory writing in a device implementing a cryptography module and a client module calling functions implemented by the cryptography module. The device includes a random access memory including a first memory zone that is secured and dedicated to the cryptography module and a second memory zone dedicated to the client module. When the client module calls a series of functions implemented by the cryptography module including a first function and at least one second function, with each second function executed following the first function or from a further second function and providing a runtime result added to a runtime result of the preceding series function, each runtime result is added to a value contained in a buffer memory allocated in the first memory. The buffer memory value is copied to the second memory zone following the execution of the last function of the series.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.