ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,748,864, issued on Sept. 29, was assigned to CERULEANT SYSTEMS LLC (Crystal, Minn.).
"Data encryption and decryption using dynamic screens and logic blocks" was invented by Jason McNutt (Plymouth, Minn.) and Amy J. Witty (Plymouth, Minn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A data encryption and decryption method using dynamic screens and logic blocks is disclosed. Data blocks are encrypted in accordance with an encryption scheme that transforms a data block into an encrypted data block by applying a dynamic screen and one or more logic blocks-wherein the dynamic screen and logic blocks are preferably different between successive data blocks....