ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,500,872, issued on Dec. 16.
"Secure controlled communications" was invented by Alan Earl Swahn (Fairview, Pa.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A system for secure controlled communications between entities is described that incorporates: confidentiality, sender authentication, data integrity, malware resistance, and author defined rights. A novel mechanism is described where the system creates symmetric encryption parameters ("SEPs") for each message and independently encrypts message: metadata, rights, body, and attachments with symmetric encryption. The SEPs themselves are encrypted with asymmetric encryption, using the recipient's publi...