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

Claim 5:
6. A system comprising:
a memory storing a root public key; and
a processing device operatively coupled to the memory, the processing device to:
receive a root signed block including a delegate public key from a remote entity, 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;
retrieve the root public key that corresponds to the root private key;
verify the root signed block with the root public key to retrieve the delegate public key;
generate an encrypted derived key based on a combination of the delegate public key and a symmetric base key stored at the system, wherein, to generate the encrypted derived key, the processing device is further to perform 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
transmit the encrypted derived key to the remote entity.