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<a href="https://gitlab.com/lumag">Dmitry Eremin-Solenikov</a> created an issue:
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<a id="user-content-description-of-problem" class="anchor" href="#description-of-problem" aria-hidden="true"></a>Description of problem:</h2>
<p dir="auto">If one of certificates in a chain is expired <code>certtool --p7-verify</code> will just print that</p>
<pre class="code highlight js-syntax-highlight plaintext" lang="plaintext" v-pre="true"><code><span id="LC1" class="line" lang="plaintext">       Signature status: verification failed: Public key signature verification has failed.</span></code></pre>
<p dir="auto">without any additional information.</p>
<p dir="auto">Compare this with <code>certtool --verify</code> output:</p>
<pre class="code highlight js-syntax-highlight plaintext" lang="plaintext" v-pre="true"><code><span id="LC1" class="line" lang="plaintext">Chain verification output: Not verified. The certificate is NOT trusted. The certificate chain uses expired certificate. </span></code></pre>
<p dir="auto">Which gives more precise information.</p>
<h2 dir="auto">
<a id="user-content-version-of-gnutls-used" class="anchor" href="#version-of-gnutls-used" aria-hidden="true"></a>Version of gnutls used:</h2>
<p dir="auto">3.6.9</p>
<h2 dir="auto">
<a id="user-content-distributor-of-gnutls-eg-ubuntu-fedora-rhel" class="anchor" href="#distributor-of-gnutls-eg-ubuntu-fedora-rhel" aria-hidden="true"></a>Distributor of gnutls (e.g., Ubuntu, Fedora, RHEL)</h2>
<p dir="auto">Debian</p>
<h2 dir="auto">
<a id="user-content-how-reproducible" class="anchor" href="#how-reproducible" aria-hidden="true"></a>How reproducible:</h2>
<p dir="auto">Steps to Reproduce:</p>
<ul dir="auto">
<li>`certtool --p7-verify --infile outdated-data.sig  --load-data outdated-data  --inder -d 99 --load-ca-cert ../grfc.crt</li>
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