Adding an option to only perform CRL checks for leaf nodes
jyrno42 at gmail.com
Thu Apr 27 15:32:10 UTC 2017
Seems to me that the current stance is that this won't be added. See
2017-04-27 18:18 GMT+03:00 Nicholas Humfrey <njh at aelius.com>:
> I was having trouble getting CRL checks working for client certificates
> and it turns out that the problem is because nginx checks CRLs for all
> levels of the certificate hierarchy, but the CA I am using does not publish
> CRLs for intermediate certificates.
> It is not uncommon for the private key of the root CA certificate to be
> locked-away offline in a safe, to prevent any other intermediate
> certificates from being issued. However this means that CRLs cannot be
> generated for the intermediate certificates, only the leaf certificates.
> Hence only the leaf certificates can be CRL checked.
> The solution to this is very simple; just set X509_V_FLAG_CRL_CHECK in
> OpenSSL without the X509_V_FLAG_CRL_CHECK_ALL flag.
> Would you accept a patch that adds a new configuration option to nginx to
> control this?
> I was thinking the option might look like:
> ssl_crl_check leaf; # Only check if leaf certificates have been revoked
> ssl_crl_check all; # Check the whole chain for revoked certificates
> The default behaviour would continue to be to check the whole chain.
> nginx-devel mailing list
> nginx-devel at nginx.org
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