Patent · US Active

Secure entry and exit for software modules protected by controlled encryption key management

US10235303B2 · kind B2 · utility

0Cited by

4References

30Claims

0Family size

Assignee

QUALCOMM Incorporated · US

Inventors

David Hartley · Berlin, DE
Roberto Avanzi · Munich, DE
Rosario Cammarota · San Diego, US

Key dates

Filing date	Aug 9, 2016
Grant date	Mar 19, 2019
Priority date	—
Expiry date	Jan 27, 2037

Classification

Technology area (CPC G)Physics
CPC primaryG06F2212/1052
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Techniques for protecting software in a computing device are provided. A method according to these techniques includes receiving a request from a non-secure software module to execute an instruction of a secure software module comprising encrypted program code, determining whether the instruction comprises an instruction associated with a controlled point of entry to the secure software module accessible outside of the secure software module, executing one or more instructions of the secure software module responsive to the instruction comprising an instruction associated with the controlled point of entry to the secure software module, and controlling exit from the secure software module to return execution to the non-secure software module.

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