Patent ID: 11876783
Assignee: KAZUAR ADVANCED TECHNOLOGIES LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC G  H | IPC H

Claim 18:
19. A non-transitory computer readable storage medium tangibly embodying a program of instructions that, when executed by a computer, causing the computer to perform a method of secure communication between a source computer and a destination computer, the method comprising:
upon operatively connecting the source computer and the destination computer with an inspection computer, receiving, by the inspection computer, data sent by the source computer to the destination computer;
inspecting, by the inspection computer, the received data using one or more filtering mechanisms, giving rise to one or more inspection results each corresponding to a respective filtering mechanism, each inspection result indicative of an inspected status of the received data;
separately signing, by the inspection computer, each of the one or more inspection results, giving rise to one or more signed inspection results;
determining, by the inspection computer and based on an inspection management policy, whether to send at least some of the inspection results and/or derivatives thereof for manual inspection, wherein the inspection management policy is specified with respect to one or more attributes associated with the received data;
upon a positive determination, providing manual inspection of the at least some inspection results and/or derivatives thereof sent by the inspection computer, giving rise to at least one manual inspection result indicative of an approval status, and providing signing of the at least one manual inspection result, giving rise to at least one signed manual inspection result; and
analyzing, by the inspection computer, signed inspection results including at least one of i) the one or more signed inspection results, and ii) the at least one signed manual inspection result, and performing additional verification of the signed inspection results when a result of the analyzing meets a predefined criterion specified by the inspection management policy, wherein the additional verification determines whether to send inspected data corresponding to the received data to the destination computer;
wherein the inspection management policy includes a list of predefined orders of one or more inspectors comprised in the inspection computer, and the received data is inspected and signed by the one or more inspectors in one of the list of predefined orders, such that each inspector, except for a first inspector, signs on a content including the received data and one or more signatures of one or more preceding inspectors that previously performed the signing, giving rise to a chain of signatures, and wherein the additional verification comprises verifying completeness and accuracy of each signature in the chain of signatures, and whether an order of the chain of signatures belongs to the list of predefined orders.