Hi Ben,
Thanks for your reply. Comments follow:
Ben Laurie wrote:
[...]The CA is created with the authority key identifier set as a critical extension.
OpenSSL (including 0.9.7g) chokes (voluntarily) on critical extensions and as a default issue an error such as "Certificate Verification: Error (34): unhandled critical extension"
There is the flag X509_V_FLAG_IGNORE_CRITICAL which can be set when creating the SSL context, unfortunately, mod_ssl does not support any options related to context flags in its configuration, thus it of course fails during authentication with the message above.
Is there any interest in adding SSL context options to mod_ssl, and if yes, what is the recommended way if it has been thought ?
Its a pretty dumb idea to ignore critical extensions, so I don't think this sounds like a great idea...
I have been reading RFC 3280 says in section 4.2:
Each extension in a certificate is designated as either critical or non-critical. A certificate using system MUST reject the certificate if it encounters a critical extension it does not recognize; however, a non-critical extension MAY be ignored if it is not recognized. The following sections present recommended extensions used within Internet
certificates and standard locations for information. Communities may elect to use additional extensions; however, caution ought to be exercised in adopting any critical extensions in certificates which might prevent use in a general context.
About my case, RFC 3280 make it clear that the authority key identifier must not be marked critical (4.2.1.1), so this is one is solved anyway.
Cheers,
Stephane
