Patent · US Active

Data processing system, method for executing a cryptographic algorithm and method for preparing execution of a cryptographic algorithm

US8738926B2 · kind B2 · utility

1Cited by

5References

10Claims

0Family size

Assignee

Intel Mobile Communications GmbH · DE

Inventors

Eckhard Delfs · Nuremberg, DE
Gerard David Jennings · Peising, DE

Key dates

Filing date	Jan 10, 2008
Grant date	May 27, 2014
Priority date	—
Expiry date	Nov 8, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG06F21/74
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A data processing system including a memory configured to store confidential data and non-confidential data; a cache memory which is configured to cache data stored in the memory and which comprises a first cache memory region and a second cache memory region; a processing circuit configured to carry out, in a first state of the data processing system, a cryptographic algorithm which operates on the confidential data and on the non-confidential data, wherein the confidential data are cached using the first cache memory region and the non-confidential data are cached using the second cache memory region; and an invalidating circuit configured to invalidate the first cache memory region when the data processing system switches from the first state into a second state.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.