US Patent Issued to MITSUBISHI ELECTRIC on Aug. 19 for "Encrypted tag generation apparatus, searchable encryption system, encrypted tag generation method, and computer readable medium" (Japanese Inventor)

ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,393,722, issued on Aug. 19, was assigned to MITSUBISHI ELECTRIC Corp. (Tokyo).

"Encrypted tag generation apparatus, searchable encryption system, encrypted tag generation method, and computer readable medium" was invented by Yutaka Kawai (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A logical expression acquisition unit (502) acquires a logical expression that represents a condition under which searchable encryption is permitted, by a logical structure with a plurality of attribute values and a logical operator. An encrypted tag generation unit (504) sets a secret sharing value which reflects the logical structure, to each of the plurality of at...