Patent ID: 11949784
Assignee: RIDGELINE, INC.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 4:
5. A method for auditing event data, comprising:
receiving an audit query request and a client key; and
determining, using a processor, that the audit query request is valid;
determining whether a chain of events is stored in an audit store, wherein the chain of events is associated with the audit query request;
in response to determining that the chain of events is stored in the audit store, retrieving from the audit store data for verifying the chain of events, wherein the data for verifying the chain of events comprises contents of a prior event and a next event of the chain of events, wherein the prior event is immediately prior to the next event in the chain of events; and
verifying the next event, comprising:
selecting the next event for validation;
retrieving input data for the next event, a sequence number for the next event, a next event signature for the next event, and a prior event signature for the prior event;
generating a hash value by hashing the input data, the sequence number, and the prior event signature;
encrypting the hash value using the client key to generate a check signature for the next event;
determining whether the check signature is equivalent to the next event signature; and
in response to determining that the check signature is equivalent to the next event signature, indicating that the next event is verified.