Patent ID: 11888894
Assignee: ORACLE INTERNATIONAL CORPORATION
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 4:
5. A system for mitigating network function (NF) update and deregister attacks, the system comprising:
an NF repository function (NRF) including at least one processor and a memory; and
an NFUpdate/NFDeregister operation validator implemented by the at least one processor for receiving, from an NF, an NFRegister request including a hash of a first authentication string, an NF instance identifier, and an NF profile, storing the hash of the first authentication string, registering the NF by storing the NF profile in an NF profile database, receiving a first NFUpdate request including the NF instance identifier; and using the stored hash of the first authentication string to validate or reject the first NFUpdate request, wherein receiving the first NFUpdate request includes receiving the first NFUpdate request including an authentication string and wherein using the stored hash of the first authentication string to validate or reject the first NFUpdate request includes computing a hash of the authentication string from the first NFUpdate request, comparing the hash of the authentication string from the first NFUpdate request to the stored hash of the first authentication string, determining that the hash of the authentication string from the first NFUpdate request matches the stored hash of the first authentication string, and, in response, validating the first NFUpdate request.