ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,531,730, issued on Jan. 20, was assigned to Zoom Communications Inc. (San Jose, Calif.).
"Tree-based key storage for selectively granting access to an encrypted conversation history" was invented by Balachandar Ganesh Kesavan (New York) and Antonio Marcedone (New York).
According to the abstract* released by the U.S. Patent & Trademark Office: "Tree-based key storage can be used to selectively grant access to an encrypted conversation history. For example, a system can access a ciphertext tree that includes an internal node with a set of child nodes. The internal node can correspond to a key and a ciphertext. The ciphertext can be generated by encrypting a set of child keys, correspo...