Hi Victor,
thanks :D I just tried to set it and I get a different error now : 22
(certificate chain too long)... I suspect it is a side effect of using
the X509_V_FLAG_PARTIAL_CHAIN flag... ? (no chain restrictions are set
in the certificates themselves...), but I have not dug into the vfy code
yet...
... any suggestion on how to fix this ? Do you think it is actually a
bug ? ... or am I missing some other configs / setting I should have
done for the verify param ?
Cheers,
Max
On 12/11/17 3:18 PM, Viktor Dukhovni wrote:
On Dec 11, 2017, at 5:06 PM, Dr. Pala <director@xxxxxxxxxx> wrote:
Hi all,
I am trying to verify a certificate and provide the possibility to directly trust an intermediate CA's certificate (not self-signed). After setting up the STORE and STORE_CTX and add the intermediate CA to the trusted certificates, when I use the "X509_verify_cert(ctx)" I get the usual "unable to get issuer certificate" - which would be fine for a "non-trusted" cert, but I would expect that to not be an issue for a trusted certificate.
Therefore, my question is what is the best method to have that behavior ?
I tried to use the certificate callback to do that, but there is no function to get the trusted certificates' stack (i.e., there is a X509_STORE_CTX_get0_untrusted() but there is no equivalent for the trusted certificates' stack) - so I could not verify if the current certificate (in the verify callback call) is in the trusted stack or not...
Maybe there are flags / trust settings that can be used instead ?
It seems we've neglected to document the X509_V_FLAG_PARTIAL_CHAIN
flag, which can be passed to X509_VERIFY_PARAM_set_flags() to
permit intermediate trust-anchors.
https://www.openssl.org/docs/man1.0.2/crypto/X509_VERIFY_PARAM_set_flags.html
https://www.openssl.org/docs/man1.1.0/crypto/X509_VERIFY_PARAM_set_flags.html
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