Patent · US Active

Apparatus and method of controlling access to data stored in a non-trusted memory

US12248409B2 · kind B2 · utility

0Cited by

0References

20Claims

0Family size

Assignee

Arm Limited · GB

Inventors

Hector Montaner Mas · Cambridge, GB
Andreas Lars Sandberg · Cambridge, GB
Roberto Avanzi · Munich, DE

Key dates

Filing date	Nov 12, 2020
Grant date	Mar 11, 2025
Priority date	—
Expiry date	Apr 1, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH04L9/3242
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

An apparatus including memory access circuitry for controlling access to data stored in the non-trusted memory, and memory security circuitry to verify integrity of data stored in the non-trusted memory. The memory security circuitry has authentication code generation circuitry for generating authentication codes to be associated with the data stored in the non-trusted memory, for use when verifying the integrity of the data. The apparatus also has a trusted storage, and the authentication code generation circuitry is arranged to generate different authentication codes, dependent on whether the authentication code is to be stored in the non-trusted memory or the trusted storage.

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