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TC_A_06_CSMS — TLS - server-side certificate - TLS version too low

Source: OCPP 2.0.1 Part 6 — Test Cases (Core & Advanced Security, FINAL, 2023-06-30) — Functional block A. Security, page 333.

Identification

Field	Value
Test case name	TLS - server-side certificate - TLS version too low
Test case Id	TC_A_06_CSMS
Use case Id(s)	A00
Requirement(s)	A00.FR.314,A00.FR.315,A00.FR.409,A00.FR.416,A00.FR.417,A00.FR.418
System under test	CSMS
Functional block	A. Security

The CSMS uses a server-side certificate to identify itself to the Charging Station, when using security profile 2 or 3.

To verify whether the CSMS is able to terminate the connection when it notices the used TLS version is lower than 1.2.

The CSMS supports security profile 2 and/or 3

Configuration State:

Memory State:

Reusable State(s):

Charging Station	CSMS
1. The OCTT terminates the connection and initiates a TLS handshake with a TLS version lower than 1.2 and sends a Client Hello to the CSMS.	2. The CSMS notices that the TLS version is lower than 1.2 and terminates the connection.
3. The OCTT initiates a TLS handshake with TLS version 1.2 or higher and sends a Client Hello to the CSMS.	4. The CSMS responds with a Server Hello; With the <Configured server certificate>
5. The OCTT performs the following actions: Send client certificate Client Key Exchange Certificate verify Change Cipher Spec Finished; Note(s):; - The client certificate is only sent when the CSMS uses security profile 3.	6. The CSMS performs the following actions: Change Cipher Spec Finished
7. The OCTT sends a HTTP upgrade request to the CSMS; Note(s):; - The HTTP request only contains a username/password combination when the CSMS uses security profile 2.	8. The CSMS upgrades the connection to a (secured) WebSocket connection.
9. The OCTT sends a BootNotificationRequest; with reason PowerUp chargingStation.model <Configured model> chargingStation.vendorName <Configured vendorName>	10. The CSMS responds with a BootNotificationResponse
11. The OCTT notifies the CSMS about the current state of all connectors.; Message: StatusNotificationRequest; - connectorStatus Available; Message: NotifyEventRequest; - trigger Delta; - actualValue "Available"; - component.name "Connector"; - variable.name "AvailabilityState"	12. The CSMS responds accordingly.

Step 10:

Message: BootNotificationResponse