Red Hat Bugzilla – Bug 961113
Need some method for validating certificates used for PKINIT
Last modified: 2016-07-19 06:11:55 EDT
Description of problem:
The Kerberos PKINIT support was written to use OpenSSL for generating and consuming PKCS7/CMS messages which are used in PKINIT. As part of ongoing efforts, we contributed additional code to allow it to be built with NSS instead.
When we test with it, however, our attempts to verify certificates using NSS_CMSSignedData_VerifySignerInfo() have to specify (as the certusage argument) that they are the certificates of TLS clients and servers. As a temporary or test solution that's acceptible, but because RFC4556 doesn't require that PKINIT certificates also be TLS certificates, there are going to be certificates "in the wild" that an OpenSSL-using build can accept that an NSS-using build can't.
It looks like we need a way to have NSS manage trust levels for CAs which issue PKINIT clients and servers, in parallel to the way it manages trust levels for CAs which issue TLS or email certificates.
This was previously filed upstream, but we're adding this one here to make tracking it easier.
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