Hello,

the scope if this mailing list is to help you setting up OpenXPKI based on the existing community edition examples. Your use case is far beyond this point, so if you need assistance with your project please consider contacting White Rabbit Security for commercial support - I am pretty sure we can find a solution.

best regards

Oliver

On 07.02.25 01:41, [email protected] wrote:

Hello, Oliver.

Thank you for your previous response.

We are currently looking to finalize the method for issuing a cross-signed certificate between OpenXPKI and Trend Micro. Specifically, we would like to know the process for issuing a cross-signed certificate between Trend Micro’s local CA and our own CA using OpenXPKI.

Could you please confirm the following?

1.

    *Steps for Cross-Signing in OpenXPKI*
    Could you provide detailed steps for using OpenXPKI to issue a
    cross-signed certificate between our CA and Trend Micro’s local CA?
    Any advice on settings or processes to be aware of when creating
    the certificate would be greatly appreciated.

2.

    *Signing Configuration*
    We would also like to know how to configure OpenXPKI to ensure
    that the certificates issued by OpenXPKI are cross-signed by Trend
    Micro’s local CA. What specific steps should we follow to generate
    and sign these certificates?

3.

    *Interoperability between OpenXPKI and Trend Micro*
    Could you also provide guidance on any settings or adjustments
    needed to ensure that certificates issued by OpenXPKI work
    properly within Trend Micro’s system?

If there are any other tools or special procedures necessary for performing cross-signing with OpenXPKI, we would appreciate that information as well.

Thank you very much for your assistance.


On 2025/02/06 18:26, Oliver Welter wrote:
Hello,

I do not really understand what you are trying to achieve - if you need to issue certificates with OpenXPKI using a cross-signed Issuing CA this is possible, as the creation of the issuing certificate is done outside of OpenXPKI.

If you want to use OpenXPKI to sign other subca certificates "on the fly", this is also possible but this has nothing to do with cross signing as the certificates are signed by the used OpenXPKI CA (which can of course be cross-signed by some other CA).

Oliver

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