Patent · US Active

Version control for trusted computing

US11323259B2 · kind B2 · utility

6Cited by

4References

22Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Alexander Maximov · Lund, SE
Petri Mikael Johansson · Bjärred, SE
Bernard Smeets · Dalby, SE

Key dates

Filing date	Sep 22, 2016
Grant date	May 3, 2022
Priority date	—
Expiry date	Dec 6, 2037

Classification

Technology area (CPC G)Physics
CPC primaryG06F2221/033
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A method performed by a virtual trusted platform module, vTPM on an execution platform, comprises the steps of obtaining (S11) encrypted information (encvTPMContext) and a first identifier (Salt), both associated with a virtual machine, VM to be executed; retrieving (S14), using the identifier from a trusted launch authority, TLA, at least a first secret portion (SlaKeystart), the first secret portion (SlaKeystart) being dynamically linked to the VM and dependant on at least a property of the VM; and decrypting (S16) the encrypted information (encvTPMContext) with a decryption key (EncKeystart) derived from at least the first secret portion (SlaKeystart) and a first measurement result (VmDigeststart) of at least the VM.

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