ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,526,156, issued on Jan. 13, was assigned to Visa International Service Association (San Francisco).

"More efficient post-quantum signatures" was invented by Pratyay Mukherjee (Sunnyvale, Calif.), Yilei Chen (Palo Alto, Calif.) and Nicholas Genise (Foster City, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Techniques of generating a lattice-based verification matrix and signature vector are disclosed. The method enables a generating device to sample a gadget matrix and then generate a reduced gadget matrix. The generating device may then sample a trapdoor matrix and use the trapdoor matrix and the reduced gadget matrix to generate a verification ...