Support of CDP/OCSP for SE050 certificates revocation

[kei_odagiri]

I have got a thing to get through about SE050 certificates revocation.

I have known the two intermediate CA was revoked due to receiving NXP's notification. According to the SE050 configurations (AN12436), the certificates named "Cloud Onboarding ECC, SE050C1/SE050C2" have been revoked. I have checked the leaf certificates which were extracted from SE050C1 and downloaded from NXP. These certs don't include the fields such as CPD, OCSP to manipulate certificate revocation. Actually, I tried making my device connect to AWS iot core with the leaf certificate, then it worked to connect to AWS iot core. At first I expected a behavior in which my device with the certificate will be rejected by AWS.

Questions:

1. Currently are you supporting CDP/OCSP server?

2. If not supported, I'd like to know how I can handle this intermediate CA revocation. Especially about connection authentication for cloud service.

Kei Odagiri

Atmark Techno,Inc.

[Kan_Li · Accepted solution]

Hi @kei_odagiri ,

No, we are not supporting CDP/OCSP server, but for your case, you may use other trusted certs inside the SE05x for AWS application, just as mentioned in https://www.nxp.com/docs/en/application-note/AN12404.pdf , the untrusted certs might still be ok with AWS but not recommended at all.

Hope that makes sense,

Have a great day,
Kan

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[kei_odagiri]

Thank you.