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1. (WO2018041904) KEY DELEGATION FOR CONTROLLING ACCESS

Pub. No.:    WO/2018/041904    International Application No.:    PCT/EP2017/071785
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Thu Aug 31 01:59:59 CEST 2017
IPC: H04L 9/32
H04L 29/06
H04W 12/08
Applicants: ASSA ABLOY AB
Inventors: LUNDBERG, Frans
STENLUND, Peter
Title: KEY DELEGATION FOR CONTROLLING ACCESS
Abstract:
It is provided a method for controlling access to an access object. The method is performed in an electronic key device and comprises the steps of: communicating with an access control device to obtain an identity of the access control device; sending an access request to a server, the access request comprising an identity of the electronic key device and the identity of the access control device; receiving a response from the server, the response comprising a key delegation to the electronic key device; and sending a grant access request to the access control device, the grant access request comprising the key delegation, to allow the access control device to evaluate whether to grant access to the access object based on a plurality of delegations comprising a sequence of delegations.