Patent ID: 11934323
Assignee: CRYPTOGRAPHY RESEARCH, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 10:
11. A non-transitory computer readable medium including data that, when accessed by a processing device, cause the processing device to perform operations comprising:
receiving, from a remote entity, a root signed block including a delegate public key, wherein the delegate public key is signed by a root private key associated with a root entity, the root entity being different from the remote entity;
retrieving a root public key that corresponds to the root private key;
verifying the root signed block with the root public key to retrieve the delegate public key;
generating an encrypted derived key based on a combination of the delegate public key and a symmetric base key stored at the processing device, wherein generating the encrypted derived key comprises performing a one way function with inputs being the symmetric base key and at least a portion of a hash value corresponding to the delegate public key; and
transmitting the encrypted derived key to the remote entity.