×

Control message signature for device control

  • US 8,407,478 B2
  • Filed: 07/07/2009
  • Issued: 03/26/2013
  • Est. Priority Date: 07/07/2009
  • Status: Active Grant
First Claim
Patent Images

1. A method of controlling a peripheral device, comprising:

  • generating, in a host processor, a control message for transmission to the peripheral device;

    calculating a signature for the control message;

    writing the control message and the signature to an address in a system memory of the host processor; and

    notifying the peripheral device of the address in the system memory, so as to cause the peripheral device to read the control message and the signature, whereby the peripheral device verifies the signature, and upon successfully verifying the signature, executes the control message.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×