Patent · US Active

Secure implementation and utilization of device-specific security data

US7861097B2 · kind B2 · utility

26Cited by

15References

27Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Bernard Smeets · Dalby, SE
Göran Selander · Bromma, SE
Per-Olof Nerbrant · Österskär, SE

Key dates

Filing date	Oct 27, 2003
Grant date	Dec 28, 2010
Priority date	—
Expiry date	Jun 22, 2026

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2209/603
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A tamper-resistant electronic circuit is configured for implementation in a device. The electronic circuit securely implements and utilizes device-specific security data during operation in the device, and is basically provided with a tamper-resistantly stored secret not accessible over an external circuit interface. The electronic circuit is also provided with functionality for performing cryptographic processing at least partly in response to the stored secret to generate an instance of device-specific security data that is internally confined within said electronic circuit during usage of the device. The electronic circuit is further configured for performing one or more security-related operations or algorithms in response to the internally confined device-specific security data. In this way, secure implementation and utilization device-specific security data for security purposes can be effectively accomplished. The security is uncompromised since the stored secret is never available outside the electronic circuit, and the device-specific security data is internally confined within the circuit during usage or operation of the device.

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