The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 8528108 B1

Expired

Date of Patent:

Sep. 03, 2013

Filed:

Oct. 06, 2006

Protecting secret information in a programmed electronic device

Applicants:

Gerhard Ammer, Munich, DE;

Michael Chambers, Erlangen, DE;

Hai Wang, Poing, DE;

Paul Renshaw, Cheadle, GB;

Michael Kiessling, Freising, DE;

Inventors:

Gerhard Ammer, Munich, DE;

Michael Chambers, Erlangen, DE;

Hai Wang, Poing, DE;

Paul Renshaw, Cheadle, GB;

Michael Kiessling, Freising, DE;

Assignee:

Agere Systems LLC, Wilmington, DE (US);

Attorney:

Primary Examiner:

Carolyn B Kosowski

Int. Cl.

CPC ...

G06F 7/04 (2006.01); G06F 17/30 (2006.01); G06F 9/00 (2006.01); G06F 15/177 (2006.01); G06F 11/00 (2006.01); H04N 7/16 (2011.01);

U.S. Cl.

CPC ...

Abstract

A way for securely protecting secret information—for example, a secret key—in a programmed electronic device is provided. A technique is disclosed for protecting secret information in a programmed electronic device that includes a non-trusted memory containing software, a data memory containing the secret information, and an access restriction logic unit that is adapted to allow or block access to the secret information wherein the secret information is adapted to be used for verifying the integrity of the software. In one embodiment, when starting up the programmed electronic device, the access restriction logic unit allows access to the secret information. Then the secret information is accessed for use in verifying the integrity of the software, and subsequently the access restriction logic unit blocks further access to the secret information. Embodiments of a semiconductor device and a programmed electronic device comprising similar features are also disclosed.

Find Patent Forward Citations

Ammer, Gerhard. (2013). Protecting secret information in a programmed electronic device (U.S. Patent No. 8528108). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8528108

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile