Patent · US Active

Method and apparatus for migrating a virtual TPM instance and preserving uniqueness and completeness of the instance

US8020204B2 · kind B2 · utility

5Cited by

4References

31Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Stefan Berger · Raubling, DE
Kenneth A. Goldman · Norwalk, US
Reiner Sailer · Scarsdale, US

Key dates

Filing date	May 2, 2008
Grant date	Sep 13, 2011
Priority date	—
Expiry date	Oct 1, 2029

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2209/127
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A migration scheme for virtualized Trusted Platform Modules is presented. The procedure is capable of securely migrating an instance of a virtual Trusted Platform Module from one physical platform to another. A virtual Trusted Platform Module instance's state is downloaded from a source virtual Trusted Platform Module and all its state information is encrypted using a hybrid of public and symmetric key cryptography. The encrypted state is transferred to the target physical platform, decrypted and the state of the virtual Trusted Platform Module instance is rebuilt.

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