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<a href="https://gitlab.com/lumag">Dmitry Baryshkov</a>
started a new
discussion on <a href="https://gitlab.com/gnutls/gnutls/merge_requests/984#note_271706914">lib/auth/ecdhe.c</a>:
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<pre style="margin: 0;"> <span id="LC185" class="line" lang="c"> <span class="p">}</span></span>
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<pre style="margin: 0;"> <span id="LC186" class="line" lang="c"></span>
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<pre style="margin: 0;"> <span id="LC187" class="line" lang="c"> <span class="cm" style="color: #998; font-style: italic;">/* RFC7748 requires to mask the MSB in the final byte */</span></span>
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<pre style="margin: 0;">-<span id="LC187" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">ecurve</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">id</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">GNUTLS_ECC_CURVE_X25519</span><span class="p">)</span> <span class="p">{</span></span>
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<td class="diff-line-num new new_line" data-linenumber="188" 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="LC188" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">ecurve</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">id</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">GNUTLS_ECC_CURVE_X25519</span> <span class="o" style="font-weight: 600;">||</span></span>
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<td class="diff-line-num new new_line" data-linenumber="189" 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="LC189" class="line" lang="c"> <span class="n" style="color: #333;">ecurve</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">id</span> <span class="o" style="font-weight: 600;">==</span> <span class="n" style="color: #333;">GNUTLS_ECC_CURVE_X448</span><span class="p">)</span> <span class="p">{</span></span>
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<td class="diff-line-num new_line" data-linenumber="190" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #f0f0f0; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#fafafa">
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<pre style="margin: 0;"> <span id="LC190" 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;">key</span><span class="p">.</span><span class="n" style="color: #333;">proto</span><span class="p">.</span><span class="n" style="color: #333;">tls12</span><span class="p">.</span><span class="n" style="color: #333;">ecdh</span><span class="p">.</span><span class="n" style="color: #333;">raw</span><span class="p">.</span><span class="n" style="color: #333;">data</span><span class="p">[</span><span class="n" style="color: #333;">point_size</span><span class="o" style="font-weight: 600;">-</span><span class="mi" style="color: #099;">1</span><span class="p">]</span> <span class="o" style="font-weight: 600;">&=</span> <span class="mh" style="color: #099;">0x7f</span><span class="p">;</span></span>
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<p dir="auto">And this also shouldn't apply to x448.</p>
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