US Patent Issued to Schneider Electric USA on July 14 for "Key deprecation without certificate revocation" (Tennessee Inventor)

ALEXANDRIA, Va., July 14 -- United States Patent no. 12,682,081, issued on July 14, was assigned to Schneider Electric USA Inc. (Boston).

"Key deprecation without certificate revocation" was invented by Michael Pyle (Hermitage, Tenn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Embodiments described herein provide techniques for securely validating firmware on a device using keys and providing a mechanism for deprecating such keys when a traditional certificate authority is unavailable or otherwise cannot be used. When a first firmware package is installed on the device, a first public key in a first secure memory key location is associated with an active status. Responsive to installation of a second firm...