US Patent Issued to MITSUBISHI ELECTRIC on Sept. 22 for "Search execution device, search execution method, computer readable medium and searchable encryption system" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 24 -- United States Patent no. 12,743,539, issued on Sept. 22, was assigned to MITSUBISHI ELECTRIC Corp. (Tokyo).

"Search execution device, search execution method, computer readable medium and searchable encryption system" was invented by Takashi Ito (Tokyo), Nori Matsuda (Tokyo), Tadakazu Yamanaka (Tokyo), Takato Hirano (Tokyo) and Yoshihiro Koseki (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A search execution device receives a trapdoor generated based on a user secret key in which a search auxiliary key and an attribute of a user are set and a search keyword, together with a key identifier (ID) that identifies the search auxiliary key. The search execution device decrypts ...