This subclause describes the use cases of interest when using a secure element to protect the security objects used by OPC UA. The following scenarios are considered:

• Transition from a DeviceIdentity personality to DCA personality (5.2)
• Provisioning of ApplicationInstance personality
• Use of ApplicationInstance personality for application authentication (5.5)
• Management of ApplicationInstance Certificates and TrustLists
• Factory reset / decommissioning

The analysis for the provisioning of personalities is based on the scenarios described in OPC 10000-21 The processes described in OPC 10000-21 provide the most comprehensive coverage of SecureElement usage. Scenarios for using SecureElements in combination with e.g., , can be easily derived from the information given in this document.