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<p style="color: #777777;">
<a href="https://gitlab.com/smuellerDD">Stephan Mueller</a>
started a new
discussion on <a href="https://gitlab.com/gnutls/gnutls/-/merge_requests/1404#note_531116324">lib/accelerated/afalg.c</a>:
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<pre style="margin: 0;">+<span id="LC239" class="line" lang="c">    <span class="p">}</span></span>
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<pre style="margin: 0;">+<span id="LC240" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC241" class="line" lang="c">    <span class="k" style="font-weight: 600;">return</span> <span class="mi" style="color: #099;">0</span><span class="p">;</span></span>
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<pre style="margin: 0;">+<span id="LC242" class="line" lang="c"><span class="p">}</span></span>
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<pre style="margin: 0;">+<span id="LC243" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC244" class="line" lang="c"><span class="k" style="font-weight: 600;">static</span> <span class="kt" style="color: #458; font-weight: 600;">int</span> <span class="nf" style="color: #900; font-weight: 600;">afalg_aead_decrypt</span><span class="p">(</span><span class="kt" style="color: #458; font-weight: 600;">void</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">_ctx</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC245" class="line" lang="c">                          <span class="k" style="font-weight: 600;">const</span> <span class="kt" style="color: #458; font-weight: 600;">void</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">nonce</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">size_t</span> <span class="n" style="color: #333;">nonce_size</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC246" class="line" lang="c">                          <span class="k" style="font-weight: 600;">const</span> <span class="kt" style="color: #458; font-weight: 600;">void</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">auth</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">size_t</span> <span class="n" style="color: #333;">auth_size</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC247" class="line" lang="c">                          <span class="kt" style="color: #458; font-weight: 600;">size_t</span> <span class="n" style="color: #333;">tag_size</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC248" class="line" lang="c">                          <span class="k" style="font-weight: 600;">const</span> <span class="kt" style="color: #458; font-weight: 600;">void</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">encr</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">size_t</span> <span class="n" style="color: #333;">encr_size</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC249" class="line" lang="c">                          <span class="kt" style="color: #458; font-weight: 600;">void</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">plain</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">size_t</span> <span class="n" style="color: #333;">plain_size</span><span class="p">)</span></span>
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<pre style="margin: 0;">+<span id="LC250" class="line" lang="c"><span class="p">{</span></span>
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<td class="new_line diff-line-num new" data-linenumber="251" 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="LC251" class="line" lang="c">    <span class="k" style="font-weight: 600;">struct</span> <span class="n" style="color: #333;">kcapi_aead_ctx</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">ctx</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">_ctx</span><span class="p">;</span></span>
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<pre style="margin: 0;">+<span id="LC252" class="line" lang="c">    <span class="k" style="font-weight: 600;">struct</span> <span class="n" style="color: #333;">iovec</span> <span class="n" style="color: #333;">iov</span><span class="p">[</span><span class="mi" style="color: #099;">3</span><span class="p">];</span></span>
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<pre style="margin: 0;">+<span id="LC253" class="line" lang="c">    <span class="kt" style="color: #458; font-weight: 600;">uint32_t</span> <span class="n" style="color: #333;">iovlen</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">2</span><span class="p">;</span></span>
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<pre style="margin: 0;">+<span id="LC254" class="line" lang="c">    <span class="kt" style="color: #458; font-weight: 600;">uint8_t</span> <span class="n" style="color: #333;">authtmp</span><span class="p">[</span><span class="n" style="color: #333;">auth_size</span><span class="p">];</span></span>
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<p dir="auto">I recommend changing that - VLAs are not good. E.g. use the maximum auth_size for the stack buffer.</p>
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