ALEXANDRIA, Va., April 15 -- United States Patent no. 12,603,759, issued on April 14, was assigned to Nvidia Corp. (Santa Clara, Calif.).

"Distribution and update of keys" was invented by Scott Wilson (Golden, Colo.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Cluster storage systems (100) and methods provide secure generation, distribution, and update of encryption keys (132, 142) during initial cluster formation and cluster membership changes without using readable persistent media. A cryptographic coprocessor (130) stores a key encryption key (132) in write-only memory and uses the unreadable key (132) for encryption and decryption of a data encryption key (142). Methods to securely distribute the initi...