US Patent Issued to Chain Reaction on Oct. 6 for "Inter stage key-switching-key reuse" (Israeli Inventors)

ALEXANDRIA, Va., Oct. 6 -- United States Patent no. 12,756,547, issued on Oct. 6, was assigned to Chain Reaction Ltd. (Tel Aviv, Israel).

"Inter stage key-switching-key reuse" was invented by Noam Kleinburd (Hashmonaim, Israel), Ilan Rosenfeld (Petah Tikva, Israel) and Oren Vrubel (Tel Aviv, Israel).

According to the abstract* released by the U.S. Patent & Trademark Office: "According to an aspect of the present disclosed subject matter, an inter-stage KSK reuse method for determining a set of Key-Switching Keys (KSK) to be used in linear transformations of both Discrete Fourier Transform (DFT) and Inverse Discrete Fourier Transform (IDFT) matrices of Slots-to-Coefficients (S2C) and Coefficient-to-Slots (C2S) stages, respectively, compris...