US Patent Issued to NIPPON TELEGRAPH AND TELEPHONE on June 24 for "Secret batch approximation system, secure computation device, secret batch approximation method, and program" (Japanese Inventor)

ALEXANDRIA, Va., June 25 -- United States Patent no. 12,341,885, issued on June 24, was assigned to NIPPON TELEGRAPH AND TELEPHONE Corp. (Tokyo).

"Secret batch approximation system, secure computation device, secret batch approximation method, and program" was invented by Koki Hamada (Musashino, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Calculation time is reduced without degrading approximation accuracy in calculation of a complicated function through secure computation. A secret batch approximation system calculates a concealed text [z] of an approximate value z for a function value y satisfying yj=f(xj) by using a concealed text [x] of a value x as input. g is defined as a polynomial for approx...