Patent · US Active

Method for protecting security-relevant data in a cache memory

US11003594B2 · kind B2 · utility

1Cited by

2References

13Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Hans Aschauer · Eferding, AT
Markus Heintel · Munich, DE

Key dates

Filing date	Mar 22, 2016
Grant date	May 11, 2021
Priority date	—
Expiry date	Mar 22, 2036

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2209/16
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

In a method for protecting security-relevant data in a cache memory, a copy of this security-relevant data from a general memory is stored in the cache memory, and the method includes stipulating obfuscation parameters, determining a first cache set address from a memory address of the general memory at which the security-relevant data are stored, generating a first modified cache set address for a first cache set with a generation function using the obfuscation parameters and the first cache set address, and storing the copy of the security-relevant data using the first modified cache set address in a first cache line of the first cache set.

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