Hi!

I am currently looking into the usage of EKU's for CA certificates and hope someone of you guys can help me.

Given the following scenario:
1) A CA certificate with EKU "Client Authentication".
2) An enterprise certificate issued by the CA certificate in 1) with EKU "Client Authentication" and "Server Authentication"

And my questions are:
1) What is the purpose of setting EKU's for CA certificates?
2) Is the scenario above "allowed" ?
3) Should a certificate chain validation of the above scenario succeed?

I tried the "openssl verify -purpose sslclient" on the above scenario and the validation succeeded. If openssl says it's ok, then it is ok :)

My reason for asking is that we struggle with a chain validation of the above scenario using some other technology...


Best regards,
Steffen Fiksdal

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