US Patent Issued to NTT on July 28 for "Access-control-purpose system, communication system, access control method, and program" (Japanese Inventors)

ALEXANDRIA, Va., July 28 -- United States Patent no. 12,696,090, issued on July 28, was assigned to NTT Inc. (Tokyo).

"Access-control-purpose system, communication system, access control method, and program" was invented by Akio Mukaiyama (Tokyo), Tetsushi Morita (Tokyo) and Akira Nagai (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An access-control-purpose system that provides access information to first and second communication devices that perform mutual authentication using ID-based encryption creates an access secret key by generating a hash value of a logical sum of a character string based on the access information and a master secret key, creates first authentication data by generating a hash...