Patent · US Active

Secure terminal, a routine and a method of protecting a secret key

US8689338B2 · kind B2 · utility

4Cited by

11References

15Claims

0Family size

Assignee

ST-ERICSSON SA · CH

Inventors

Jean-Philippe Perrin · Montreuil, FR
Harald Bauer · Ehningen, DE
Patrick Fulcheri · Antibes, FR

Key dates

Filing date	Aug 1, 2006
Grant date	Apr 1, 2014
Priority date	—
Expiry date	Apr 5, 2029

Classification

Technology area (CPC G)Physics
CPC primaryG06F2221/2149
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

The method of protecting a secret key from being read by a non-secure software application, comprises a step (94) of recording the secret key as a routine stored in an executable-only memory. The routine having: load instructions to load the secret key into a memory readable by a secure and a non-secure software application, if the routine is called by the secure software application, and control instructions to leave only dummy data instead of the secret key in the readable memory if the software application calling the executable-only routine is the non-secure software application.

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