ALEXANDRIA, Va., May 12 -- United States Patent no. 12,627,465, issued on May 12, was assigned to SRI International (Menlo Park, Calif.).

"Attribute based encryption with bounded collusion resistance" was invented by Karim Eldefrawy (Palo Alto, Calif.) and Nicholas James Genise (San Mateo, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An attribute based encryption system includes a key generator configured to generate a cyclic group (G) having a prime order q; generate an attribute key matrix (M); generate a master public key (MPK) based, at least in part, on the group (G) and (M); generate a master secret key (MSK) based on a first vector s and a second vector t that represent an encryption policy; ...