Patent ID: 11936798
Assignee: NOKIA TECHNOLOGIES OY
Field: Computer technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 6:
7. A device for securing a provable resource possession on said device having spawned a number of virtual machines providing services to a client device, the device comprising:
one or more network interfaces to communicate with a network;
a processor coupled to the one or more network interfaces and configured to execute one or more processes; and
a memory configured to store a process executable by the processor, the process when executed operable to
receive a challenge request from the client device for respective virtual machines of the number of virtual machines, the challenge request containing a physically unclonable function (PUF) challenge and a filter rule, the filter rule corresponding to a selected portion of a PUF response with respect to an identifier of a respective virtual machine, and the selected portion of the response depending on the number of virtual machines,
challenge a PUF component of the device with the PUF challenge to obtain the PUF response for the respective virtual machines,
filter the PUF response in a PUF filtered response for the respective virtual machines according to the filter rule, and
send the PUF filtered response for the respective virtual machines to the client device.