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<p style="color: #777777;">
<a href="https://gitlab.com/lumag">Dmitry Eremin-Solenikov</a>
commented on a
discussion on <a href="https://gitlab.com/gnutls/gnutls/merge_requests/1097#note_239307751">lib/auth/vko_gost.c</a>:
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<pre style="margin: 0;">+<span id="LC152" class="line" lang="c">            <span class="p">}</span></span>
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<pre style="margin: 0;">+<span id="LC153" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC154" class="line" lang="c">            <span class="n" style="color: #333;">has_pcert</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">1</span><span class="p">;</span></span>
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<pre style="margin: 0;">+<span id="LC155" class="line" lang="c">    <span class="p">}</span></span>
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<pre style="margin: 0;">+<span id="LC156" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC157" class="line" lang="c">    <span class="n" style="color: #333;">ret</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">_gnutls_gost_keytrans_decrypt</span><span class="p">(</span><span class="n" style="color: #333;">has_pcert</span> <span class="o" style="font-weight: 600;">?</span> <span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">peer_cert</span><span class="p">.</span><span class="n" style="color: #333;">pubkey</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">params</span> <span class="o" style="font-weight: 600;">:</span> <span class="nb" style="color: #0086b3;">NULL</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC158" class="line" lang="c">                                        <span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">privkey</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">key</span><span class="p">.</span><span class="n" style="color: #333;">x509</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">params</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC159" class="line" lang="c">                                        <span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">cek</span><span class="p">,</span> <span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">ukm</span><span class="p">,</span> <span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">session</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">key</span><span class="p">.</span><span class="n" style="color: #333;">key</span><span class="p">);</span></span>
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<pre style="margin: 0;">+<span id="LC160" class="line" lang="c">    <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">ret</span> <span class="o" style="font-weight: 600;"><</span> <span class="mi" style="color: #099;">0</span><span class="p">)</span> <span class="p">{</span></span>
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<pre style="margin: 0;">+<span id="LC161" class="line" lang="c">            <span class="n" style="color: #333;">gnutls_assert</span><span class="p">();</span></span>
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<pre style="margin: 0;">+<span id="LC162" class="line" lang="c">            <span class="n" style="color: #333;">_gnutls_free_datum</span><span class="p">(</span><span class="o" style="font-weight: 600;">&</span><span class="n" style="color: #333;">ukm</span><span class="p">);</span></span>
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<pre style="margin: 0;">+<span id="LC163" class="line" lang="c">            <span class="k" style="font-weight: 600;">goto</span> <span class="n" style="color: #333;">cleanup</span><span class="p">;</span></span>
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<pre style="margin: 0;">+<span id="LC164" class="line" lang="c">    <span class="p">}</span></span>
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<pre style="margin: 0;">+<span id="LC165" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC166" class="line" lang="c">    <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">ret</span> <span class="o" style="font-weight: 600;">==</span> <span class="mi" style="color: #099;">0</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC167" class="line" lang="c">            <span class="n" style="color: #333;">session</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">internals</span><span class="p">.</span><span class="n" style="color: #333;">hsk_flags</span> <span class="o" style="font-weight: 600;">&=</span> <span class="o" style="font-weight: 600;">~</span><span class="n" style="color: #333;">HSK_CRT_VRFY_EXPECTED</span><span class="p">;</span></span>
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<p dir="auto">It's necessary because otherwise a client will expect server's CertificateVerify message. However with this KX a server won't send one.</p>
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