[gnutls-devel] GnuTLS | cockpit-certificate-ensure: ../../../lib/x509/common.c:1756: _gnutls_sort_clist: Assertion `k == clist_size' failed. (#1521)

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Daiki Ueno commented on a discussion: https://gitlab.com/gnutls/gnutls/-/issues/1521#note_1713449674

> KeyRootA_SignedB is the key from A signed by B (cross-signed).

By "key" do you mean an X.509 private key? From the GnuTLS API point of view, it is not supported to mix certificates and keys in a single certificate chain, unless Cockpit is doing a special treatment for that.

> A,B, and C are not in the trust store of the cockpit host, but it is serving these certs and not validating them so I don't expect this would matter.

I'm not familiar with Cockpit, but as this issue is about validating a certificate chain with `cockpit-certificate-ensure`, I guess you would need to tell the tool that any of those root certificates are trusted?

@martinpitt would you be able to shed some light on this?

In any case, it would be helpful if you could create a similar certificate chain that could reproduce the issue.

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