matter lock sample failed to boot (E: GetEnableKey() failed [Error: 160])

[Himansu]

Hi Nordic Team,

I am using SDK 2.7.0 & board: nrf52840-dk for matter lock application and facing below issue when boot device.

I want to create factory data manually using guide: Configuring factory data for the nRF Connect examples (nordicsemi.com)

Changes made in SDK V2.7.0 Matter lock sample:
in sysbuild.conf => Added New => SB_CONFIG_MATTER_FACTORY_DATA_GENERATE=n

In prj.conf => CONFIG_CHIP_FACTORY_DATA_BUILD=y =>  # CONFIG_CHIP_FACTORY_DATA_BUILD=y

Generate Factory data using the below script:
generate_nrfconnect_chip_factory_data.py --sn 1234567890ABCDEF --date 2024-08-01 --vendor_id 65521 --product_id 32774 --vendor_name "Nordic Semiconductor ASA" --product_name not-specified --hw_ver 0 --hw_ver_str prerelease --dac_cert D:/nRF_SDK/v2.7.0/modules/lib/matter/credentials/development/attestation/Matter-Development-DAC-FFF1-8006-Cert.der --dac_key D:/nRF_SDK/v2.7.0/modules/lib/matter/credentials/development/attestation/Matter-Development-DAC-FFF1-8006-Key.der --pai_cert D:/nRF_SDK/v2.7.0/modules/lib/matter/credentials/development/attestation/Matter-Development-PAI-FFF1-noPID-Cert.der --spake2_it 1000 --spake2_salt U1BBS0UyUCBLZXkgU2FsdA== --discriminator 0xF00 --passcode 20202021 --include_passcode --overwrite --product_finish other --generate_onboarding -o D:/nRF_SDK/v2.7.0/nrf/samples/matter/lock/build/lock/zephyr/factory_data -s D:/nRF_SDK/v2.7.0/modules/lib/matter/scripts/tools/nrfconnect/nrfconnect_factory_data.schema --offset 0xf7000 --size 0x1000

After uploading merged.hex and factory_data.hex, got below out on uart terminal.

UART Log:
21:22:51.591> uart:~$ *** Booting My Application v2.7.0-5cb85570ca43 ***
21:22:51.591> *** Using nRF Connect SDK v2.7.0-5cb85570ca43 ***
21:22:51.591> *** Using Zephyr OS v3.6.99-100befc70c74 ***
21:22:51.591> I: 31 [DL]BLE address: D4:0B:37:B0:27:5B
21:22:51.591> I: No users indexes stored
21:22:51.591> I: No stored indexes for credential of type: 1
21:22:51.591> I: 47 [DL]CHIP task running
21:22:51.591> I: Init CHIP stack
21:22:51.591> I: 52 [DL]OpenThread started: OK
21:22:51.673> I: 55 [DL]Setting OpenThread device type to SLEEPY END DEVICE
21:22:51.673> I: 62 [DL]Found DAC Private Key in factory data set. Copying to secure storage...
21:22:51.673> E: GetEnableKey() failed [Error: 160]
21:22:51.673> E: Exited with code a0

Thanks,

Himansu Donga

[Marte Myrvold]

Hi,

It fails due to not finding the EnableKey in the factory data.

Did you verify the JSON file with the JSON schema tool? Does it make any difference if you put the string parameters in quotation marks (") , e.g. "1234567890ABCDEF"?

Best regards,
Marte

[Himansu]

Hi Marte,

Did you verify the JSON file with the JSON schema tool?

Ans: Yes, Verified

Does it make any difference if you put the string parameters in quotation marks (") , e.g. "1234567890ABCDEF"?

Ans: No change in error if you use with a quotation or without quotation marks.

Thanks,

Himansu

[Marte Myrvold]

Hi Himansu,

I have forwarded this internally and will get back to you by tomorrow.

Best regards,
Marte

[Marte Myrvold]

Hi Himansu,

The enable key should be set to zeros. You can provide it as part of the factory data or set it directly in the application code. Please see Matter test event triggers for more information.

Best regards,
Marte

[Himansu]

Thank you,

Now my issue is resolved after adding the line in prj.conf

CONFIG_NCS_SAMPLE_MATTER_TEST_EVENT_TRIGGERS_REGISTER_DEFAULTS=n
CONFIG_NCS_SAMPLE_MATTER_TEST_EVENT_TRIGGERS=n