"Unsupported certificate format“ when adding device from Amazon Echo

[schmidt-daniel]

Describe the issue you are experiencing

I have a Siegenia Smart Window handle which is connected to my Amazon Echo (4th Gen) via Thread. I can check the status and control the handle from that device.
When I want to add it to Home Assistant with a Matter sharing code, it fails and I can see the error message "Unsupported certificate format" in the logs

What type of installation are you running?

Home Assistant OS

Which operating system are you running on?

Home Assistant Operating System

Which add-on are you reporting an issue with?

Matter Server

What is the version of the add-on?

6.5.1

Steps to reproduce the issue

In Alexa App

1. Pair Smart Handle with Amazon Echo. Three devices are added to the Alexa App:

• one for the device itself
• one for the lock status
• one for operating the lock

2. select any of the 3 devices
3. click on "Other assistants and apps" and „Add another“. A pop-up is displayed. Click "OK"
   
4. Copy setup code to clipboard

In Home Assistant
5. "Add integration" -> "Add Matter device"
6. Select "Yes, it‘s already in use"
7. Select "Other controller"
8. Paste setup code from clipboard and confirm
9. "Adding the device, this may take a minute or two." is displayed for a few seconds, then "Failed to setup device" message appears.

System Health information

System Information

version	core-2024.10.1
installation_type	Home Assistant OS
dev	false
hassio	true
docker	true
user	root
virtualenv	false
python_version	3.12.4
os_name	Linux
os_version	6.6.46-haos
arch	x86_64
timezone	Europe/Berlin
config_dir	/config

Home Assistant Community Store

GitHub API	ok
GitHub Content	ok
GitHub Web	ok
HACS Data	ok
GitHub API Calls Remaining	5000
Installed Version	2.0.1
Stage	running
Available Repositories	1500
Downloaded Repositories	53

Home Assistant Cloud

logged_in	false
can_reach_cert_server	ok
can_reach_cloud_auth	ok
can_reach_cloud	ok

Home Assistant Supervisor

host_os	Home Assistant OS 13.1
update_channel	stable
supervisor_version	supervisor-2024.09.1
agent_version	1.6.0
docker_version	26.1.4
disk_total	30.8 GB
disk_used	16.6 GB
healthy	true
supported	true
host_connectivity	true
supervisor_connectivity	true
ntp_synchronized	true
virtualization	kvm
board	ova
supervisor_api	ok
version_api	ok
installed_addons	Mosquitto broker (6.4.1), File editor (5.8.0), Advanced SSH & Web Terminal (19.0.0), ESPHome (2024.9.2), Let's Encrypt (5.2.1), Whisper (2.1.2), Piper (1.5.2), openWakeWord (1.10.0), AppDaemon (0.16.7), InfluxDB (5.0.1), Grafana (10.1.1), Samba share (12.3.2), go2rtc (1.9.4), Zigbee2MQTT (1.40.2-1), Silicon Labs Flasher (0.3.0), Music Assistant Server (2.2.7), Cloudflared (5.1.21), Matter Server (6.5.1)

Dashboards

dashboards	4
resources	32
views	17
mode	storage

MercedesME 2020

api_endpoint_reachable	ok
websocket_connection_state	connected
cars_connected	2
version	v0.18.1

Recorder

oldest_recorder_run	September 28, 2024 at 23:01
current_recorder_run	October 6, 2024 at 07:14
estimated_db_size	835.64 MiB
database_engine	sqlite
database_version	3.45.3

Anything in the Supervisor logs that might be useful for us?

No response

Anything in the add-on logs that might be useful for us?

Add-on: Matter Server
 Matter WebSocket Server for Home Assistant Matter support.
-----------------------------------------------------------
 Add-on version: 6.5.1
 You are running the latest version of this add-on.
 System: Home Assistant OS 13.1  (amd64 / qemux86-64)
 Home Assistant Core: 2024.10.1
 Home Assistant Supervisor: 2024.09.1
-----------------------------------------------------------
 Please, share the above information when looking for help
 or support in, e.g., GitHub, forums or the Discord chat.
-----------------------------------------------------------
s6-rc: info: service banner successfully started
s6-rc: info: service matter-server: starting
s6-rc: info: service matter-server successfully started
s6-rc: info: service legacy-services: starting
[09:18:37] INFO: Starting Matter Server...
s6-rc: info: service legacy-services successfully started
[09:18:38] INFO: Using 'enp0s18' as primary network interface.
[09:18:38] INFO: Successfully send discovery information to Home Assistant.
2024-10-06 09:18:40.038 (MainThread) INFO [matter_server.server.stack] Initializing CHIP/Matter Logging...
2024-10-06 09:18:40.038 (MainThread) INFO [matter_server.server.stack] Initializing CHIP/Matter Controller Stack...
[1728199120.063012][126:126] CHIP:CTL: Setting attestation nonce to random value
[1728199120.063257][126:126] CHIP:CTL: Setting CSR nonce to random value
[1728199120.064192][126:126] CHIP:DL: ChipLinuxStorage::Init: Using KVS config file: /tmp/chip_kvs
[1728199120.064328][126:126] CHIP:DL: writing settings to file (/tmp/chip_kvs-HCwm1H)
[1728199120.064388][126:126] CHIP:DL: renamed tmp file to file (/tmp/chip_kvs)
[1728199120.064546][126:126] CHIP:DL: ChipLinuxStorage::Init: Using KVS config file: /data/chip_factory.ini
[1728199120.064753][126:126] CHIP:DL: ChipLinuxStorage::Init: Using KVS config file: /data/chip_config.ini
[1728199120.064829][126:126] CHIP:DL: ChipLinuxStorage::Init: Using KVS config file: /data/chip_counters.ini
[1728199120.064974][126:126] CHIP:DL: writing settings to file (/data/chip_counters.ini-P32ZqH)
[1728199120.065146][126:126] CHIP:DL: renamed tmp file to file (/data/chip_counters.ini)
[1728199120.065171][126:126] CHIP:DL: NVS set: chip-counters/reboot-count = 2 (0x2)
[1728199120.065583][126:126] CHIP:DL: Got Ethernet interface: enp0s18
[1728199120.065762][126:126] CHIP:DL: Found the primary Ethernet interface:enp0s18
[1728199120.066366][126:126] CHIP:DL: Failed to get WiFi interface
[1728199120.066377][126:126] CHIP:DL: Failed to reset WiFi statistic counts
2024-10-06 09:18:40.066 (MainThread) INFO [chip.storage] Initializing persistent storage from file: /data/chip.json
2024-10-06 09:18:40.066 (MainThread) INFO [chip.storage] Loading configuration from /data/chip.json...
2024-10-06 09:18:40.125 (MainThread) INFO [chip.CertificateAuthority] Loading certificate authorities from storage...
2024-10-06 09:18:40.125 (MainThread) INFO [chip.CertificateAuthority] New CertificateAuthority at index 1
2024-10-06 09:18:40.126 (MainThread) INFO [chip.CertificateAuthority] Loading fabric admins from storage...
2024-10-06 09:18:40.126 (MainThread) INFO [chip.FabricAdmin] New FabricAdmin: FabricId: 0x0000000000000002, VendorId = 0x134B
2024-10-06 09:18:40.126 (MainThread) INFO [matter_server.server.stack] CHIP Controller Stack initialized.
2024-10-06 09:18:40.127 (MainThread) INFO [matter_server.server.server] Starting the Matter Server...
2024-10-06 09:18:40.129 (MainThread) INFO [matter_server.server.helpers.paa_certificates] Skip fetching certificates (already fetched within the last 24h).
2024-10-06 09:18:40.129 (MainThread) INFO [chip.FabricAdmin] Allocating new controller with CaIndex: 1, FabricId: 0x0000000000000002, NodeId: 0x000000000001B669, CatTags: []
2024-10-06 09:18:40.195 (MainThread) INFO [matter_server.server.vendor_info] Loading vendor info from storage.
2024-10-06 09:18:40.200 (MainThread) INFO [matter_server.server.vendor_info] Loaded 248 vendors from storage.
2024-10-06 09:18:40.200 (MainThread) INFO [matter_server.server.vendor_info] Fetching the latest vendor info from DCL.
2024-10-06 09:18:40.443 (MainThread) INFO [matter_server.server.vendor_info] Fetched 247 vendors from DCL.
2024-10-06 09:18:40.443 (MainThread) INFO [matter_server.server.vendor_info] Saving vendor info to storage.
2024-10-06 09:18:40.448 (MainThread) INFO [matter_server.server.device_controller] Loaded 0 nodes from stored configuration
2024-10-06 09:18:40.454 (MainThread) INFO [matter_server.server.server] Matter Server successfully initialized.
2024-10-06 09:19:43.731 (MainThread) INFO [matter_server.server.device_controller] Starting Matter commissioning with code using Node ID 4.
2024-10-06 09:19:46.287 (Dummy-2) INFO [chip.ChipDeviceCtrl] Established secure session with Device
2024-10-06 09:19:51.064 (Dummy-2) CHIP_ERROR [chip.native.CTL] Error on commissioning step 'SendNOC': 'src/controller/CHIPDeviceController.cpp:1494: CHIP Error 0x00000050: Unsupported certificate format'
2024-10-06 09:19:51.301 (Dummy-2) CHIP_ERROR [chip.native.EM] Failed to send Solitary ack for MessageCounter:73851618 on exchange 53955i with Node: <0000000000000000, 0>:src/messaging/ExchangeContext.cpp:99: CHIP Error 0x00000002: Connection aborted
2024-10-06 09:19:51.301 (Dummy-2) WARNING [chip.ChipDeviceCtrl] Failed to commission: src/controller/CHIPDeviceController.cpp:1494: CHIP Error 0x00000050: Unsupported certificate format
2024-10-06 09:19:51.301 (MainThread) ERROR [matter_server.server.client_handler] [140574846284560] Error while handling: commission_with_code: Commission with code failed for node 4.

Additional information

No response