ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,482,315, issued on Nov. 25, was assigned to ASSA ABLOY AB (Stockholm).
"Privacy-enhanced delegation of access right" was invented by Frans Lundberg (Saltsjobaden, Sweden).
According to the abstract* released by the U.S. Patent & Trademark Office: "It is provided a method for providing a privacy-enhanced delegated access right to unlock a physical lock. The method comprises: obtaining a derivation scalar; receiving a cryptographically signed delegation from the delegator device, the delegation being a data object comprising a public key of the delegator device, a public key of the physical lock, and a derived public key for the delegatee device, and wherein the delegation is cryptogra...