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<a href="https://gitlab.com/Vrancken">Tom</a>
commented on a discussion
on <a href="https://gitlab.com/gnutls/gnutls/merge_requests/650#note_120895312">lib/pcert.c</a>:
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<td class="diff-line-num new new_line" data-linenumber="378" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC378" class="line" lang="c"><span class="p">{</span></span>
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<td class="diff-line-num new new_line" data-linenumber="379" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC379" class="line" lang="c"> <span class="cm" style="color: #998; font-style: italic;">/* For convenience we reuse the internal pcert structure to hold</span></span>
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<td class="diff-line-num new new_line" data-linenumber="380" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC380" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * our raw public key. By doing so we only need one certificate</span></span>
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<td class="diff-line-num new new_line" data-linenumber="381" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC381" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * structure that can hold multiple certificate-like credential</span></span>
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<td class="diff-line-num new new_line" data-linenumber="382" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC382" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * types.</span></span>
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<pre style="margin: 0;">+<span id="LC383" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> */</span></span>
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<td class="diff-line-num new new_line" data-linenumber="384" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #c7f0d2; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#ddfbe6">
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<pre style="margin: 0;">+<span id="LC384" class="line" lang="c"> <span class="kt" style="color: #458; font-weight: 600;">int</span> <span class="n" style="color: #333;">ret</span><span class="p">;</span></span>
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<pre style="margin: 0;">+<span id="LC385" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC386" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">pubkey</span> <span class="o" style="font-weight: 600;">==</span> <span class="nb" style="color: #0086b3;">NULL</span><span class="p">)</span> <span class="p">{</span></span>
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<pre style="margin: 0;">+<span id="LC387" class="line" lang="c"> <span class="k" style="font-weight: 600;">return</span> <span class="n" style="color: #333;">gnutls_assert_val</span><span class="p">(</span><span class="n" style="color: #333;">GNUTLS_E_INVALID_REQUEST</span><span class="p">);</span></span>
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<pre style="margin: 0;">+<span id="LC388" class="line" lang="c"> <span class="p">}</span></span>
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<pre style="margin: 0;">+<span id="LC389" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC390" class="line" lang="c"> <span class="n" style="color: #333;">memset</span><span class="p">(</span><span class="n" style="color: #333;">pcert</span><span class="p">,</span> <span class="mi" style="color: #099;">0</span><span class="p">,</span> <span class="k" style="font-weight: 600;">sizeof</span><span class="p">(</span><span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">pcert</span><span class="p">));</span></span>
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<pre style="margin: 0;">+<span id="LC391" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC392" class="line" lang="c"> <span class="cm" style="color: #998; font-style: italic;">/* A pcert struct holds a raw copy of the certificate data.</span></span>
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<pre style="margin: 0;">+<span id="LC393" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> * Therefore we convert our gnutls_pubkey_t to its raw DER</span></span>
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<p dir="auto">The key thing to document here is that we need to export the key in DER format. This info is relevant for a developer but not for the user of this API.</p>
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