ALEXANDRIA, Va., July 3 -- United States Patent no. 12,348,652, issued on July 1, was assigned to nChain Licensing AG (Zug, Switzerland).
"Key derivation method" was invented by Chloe Tartan (London), Michaella Pettit (London), Alessio Pagani (London) and Wei Zhang (London).
According to the abstract* released by the U.S. Patent & Trademark Office: "A computer-implemented method of deriving keys of a hierarchical key structure, wherein the method is performed by a first party and comprises: generating a target index of a target child key, wherein the target index is generated based on a first result of inputting at least a target message to a first hash function; and deriving the target child key of a level in a hierarchy of a key structu...