Patent ID: 10063586

Abstract:
A method, computer program and a server node (100) in a communications network (50) for reduction of undesired energy consumption of the server node (100), the method comprising: receiving a request message from a client (120), the request message containing message fields comprising at least a message ID field and an integrity indication field containing a first integrity indication, determining a relation key by performing a calculation by usage of a master key commonly known by the server node (100) and an authorization engine (110) and at least data comprised in the message ID field, calculating a second integrity indication based on a subset of the message fields by usage of the relation key, wherein the subset excludes at least one message field that is predictable by a trusted client (120), verifying the subset of the message fields by comparing the first and second integrity indications, and determining the message to be authorized when the comparison indicates equality, and wherein when the message is not authorized, suppressing reception of the message.