<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<html lang="en">
<head>
<meta content="text/html; charset=US-ASCII" http-equiv="Content-Type">
<title>
GitLab
</title>
<style>img {
max-width: 100%; height: auto;
}
</style>
</head>
<body>
<div class="content">
<p style="color: #777777;">
<a href="https://gitlab.com/smuellerDD">Stephan Mueller</a>
commented on a
discussion on <a href="https://gitlab.com/gnutls/gnutls/-/merge_requests/1404#note_551241704">lib/accelerated/afalg.c</a>:
</p>
<table>
<tr class="line_holder old" id="">
<td class="old_line diff-line-num old" data-linenumber="388" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
388
</td>
<td class="new_line diff-line-num old" data-linenumber="385" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
</td>
<td class="line_content old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb">
<pre style="margin: 0;">-<span id="LC388" class="line" lang="c"> <span class="n" style="color: #333;">iov</span><span class="p">[</span><span class="mi" style="color: #099;"><span class="idiff left right deletion">1</span></span><span class="p">].</span><span class="n" style="color: #333;">iov_base</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">plain</span><span class="p">;</span></span>
</pre>
</td>
</tr>
<tr class="line_holder old" id="">
<td class="old_line diff-line-num old" data-linenumber="389" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
389
</td>
<td class="new_line diff-line-num old" data-linenumber="385" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
</td>
<td class="line_content old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb">
<pre style="margin: 0;">-<span id="LC389" class="line" lang="c"> <span class="n" style="color: #333;">iov</span><span class="p">[</span><span class="mi" style="color: #099;"><span class="idiff left right deletion">1</span></span><span class="p">].</span><span class="n" style="color: #333;">iov_len</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">plain_size</span><span class="p">;</span></span>
</pre>
</td>
</tr>
<tr class="line_holder new" id="">
<td class="old_line diff-line-num new" data-linenumber="390" 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">
</td>
<td class="new_line diff-line-num new" data-linenumber="385" 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">
385
</td>
<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">
<pre style="margin: 0;">+<span id="LC385" class="line" lang="c"> <span class="n" style="color: #333;">iov</span><span class="p">[</span><span class="mi" style="color: #099;"><span class="idiff left addition">0</span></span><span class="p">].</span><span class="n" style="color: #333;">iov_base</span> <span class="o" style="font-weight: 600;">=</span> <span class="p"><span class="idiff addition">(</span></span><span class="kt" style="color: #458; font-weight: 600;"><span class="idiff addition">void</span></span><span class="idiff addition"> </span><span class="o" style="font-weight: 600;"><span class="idiff addition">*</span></span><span class="p"><span class="idiff right addition">)</span></span><span class="n" style="color: #333;">plain</span><span class="p">;</span></span>
</pre>
</td>
</tr>
<tr class="line_holder new" id="">
<td class="old_line diff-line-num new" data-linenumber="390" 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">
</td>
<td class="new_line diff-line-num new" data-linenumber="386" 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">
386
</td>
<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">
<pre style="margin: 0;">+<span id="LC386" class="line" lang="c"> <span class="n" style="color: #333;">iov</span><span class="p">[</span><span class="mi" style="color: #099;"><span class="idiff left addition">0</span></span><span class="p">].</span><span class="n" style="color: #333;">iov_len</span> <span class="o" style="font-weight: 600;">=</span> <span class="p"><span class="idiff addition">(</span></span><span class="n" style="color: #333;"><span class="idiff addition">plain_size</span></span><span class="idiff addition"> </span><span class="o" style="font-weight: 600;"><span class="idiff addition">></span></span><span class="idiff addition"> </span><span class="n" style="color: #333;"><span class="idiff addition">outbuflen</span></span><span class="p"><span class="idiff addition">)</span></span><span class="idiff addition"> </span><span class="o" style="font-weight: 600;"><span class="idiff addition">?</span></span><span class="idiff addition"> </span><span class="n" style="color: #333;"><span class="idiff addition">outbuflen</span></span><span class="idiff addition"> </span><span class="o" style="font-weight: 600;"><span class="idiff addition">:</span></span><span class="idiff right addition"> </span><span class="n" style="color: #333;">plain_size</span><span class="p">;</span></span>
</pre>
</td>
</tr>
<tr class="line_holder" id="">
<td class="old_line diff-line-num" data-linenumber="390" 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">
390
</td>
<td class="new_line diff-line-num" data-linenumber="387" 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">
387
</td>
<td class="line_content" style="padding-left: 0.5em; padding-right: 0.5em;">
<pre style="margin: 0;"> <span id="LC387" class="line" lang="c"></span>
</pre>
</td>
</tr>
<tr class="line_holder old" id="">
<td class="old_line diff-line-num old" data-linenumber="391" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
391
</td>
<td class="new_line diff-line-num old" data-linenumber="388" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
</td>
<td class="line_content old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb">
<pre style="margin: 0;">-<span id="LC391" class="line" lang="c"> <span class="cm" style="color: #998; font-style: italic;">/* Older kernels require tag space for output. */</span></span>
</pre>
</td>
</tr>
<tr class="line_holder old" id="">
<td class="old_line diff-line-num old" data-linenumber="392" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
392
</td>
<td class="new_line diff-line-num old" data-linenumber="388" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
</td>
<td class="line_content old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb">
<pre style="margin: 0;">-<span id="LC392" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">((</span><span class="n" style="color: #333;">auth_size</span> <span class="o" style="font-weight: 600;">+</span> <span class="n" style="color: #333;">plain_size</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><</span></span>
</pre>
</td>
</tr>
<tr class="line_holder old" id="">
<td class="old_line diff-line-num old" data-linenumber="393" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
393
</td>
<td class="new_line diff-line-num old" data-linenumber="388" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
</td>
<td class="line_content old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb">
<pre style="margin: 0;">-<span id="LC393" class="line" lang="c"> <span class="n" style="color: #333;">kcapi_aead_outbuflen_dec</span><span class="p">(</span><span class="n" style="color: #333;">ctx</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">handle</span><span class="p">,</span> <span class="n" style="color: #333;">plain_size</span><span class="p">,</span> <span class="n" style="color: #333;">auth_size</span><span class="p">,</span></span>
</pre>
</td>
</tr>
<tr class="line_holder old" id="">
<td class="old_line diff-line-num old" data-linenumber="394" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
394
</td>
<td class="new_line diff-line-num old" data-linenumber="388" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
</td>
<td class="line_content old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb">
<pre style="margin: 0;">-<span id="LC394" class="line" lang="c"> <span class="n" style="color: #333;">tag_size</span><span class="p">))</span> <span class="p">{</span></span>
</pre>
</td>
</tr>
<tr class="line_holder old" id="">
<td class="old_line diff-line-num old" data-linenumber="395" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
395
</td>
<td class="new_line diff-line-num old" data-linenumber="388" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
</td>
<td class="line_content old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb">
<pre style="margin: 0;">-<span id="LC395" class="line" lang="c"> <span class="n" style="color: #333;">iov</span><span class="p">[</span><span class="mi" style="color: #099;">2</span><span class="p">].</span><span class="n" style="color: #333;">iov_base</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tagtmp</span><span class="p">;</span></span>
</pre>
</td>
</tr>
<tr class="line_holder old" id="">
<td class="old_line diff-line-num old" data-linenumber="396" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
396
</td>
<td class="new_line diff-line-num old" data-linenumber="388" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
</td>
<td class="line_content old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb">
<pre style="margin: 0;">-<span id="LC396" class="line" lang="c"> <span class="n" style="color: #333;">iov</span><span class="p">[</span><span class="mi" style="color: #099;">2</span><span class="p">].</span><span class="n" style="color: #333;">iov_len</span> <span class="o" style="font-weight: 600;">=</span> <span class="n" style="color: #333;">tag_size</span><span class="p">;</span></span>
</pre>
</td>
</tr>
<tr class="line_holder old" id="">
<td class="old_line diff-line-num old" data-linenumber="397" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
397
</td>
<td class="new_line diff-line-num old" data-linenumber="388" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
</td>
<td class="line_content old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb">
<pre style="margin: 0;">-<span id="LC397" class="line" lang="c"> <span class="n" style="color: #333;">iovlen</span> <span class="o" style="font-weight: 600;">=</span> <span class="mi" style="color: #099;">3</span><span class="p">;</span></span>
</pre>
</td>
</tr>
<tr class="line_holder old" id="">
<td class="old_line diff-line-num old" data-linenumber="398" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
398
</td>
<td class="new_line diff-line-num old" data-linenumber="388" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
</td>
<td class="line_content old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb">
<pre style="margin: 0;">-<span id="LC398" class="line" lang="c"> <span class="p">}</span></span>
</pre>
</td>
</tr>
<tr class="line_holder old" id="">
<td class="old_line diff-line-num old" data-linenumber="399" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
399
</td>
<td class="new_line diff-line-num old" data-linenumber="388" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
</td>
<td class="line_content old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb">
<pre style="margin: 0;">-<span id="LC399" class="line" lang="c"></span>
</pre>
</td>
</tr>
<tr class="line_holder old" id="">
<td class="old_line diff-line-num old" data-linenumber="400" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
400
</td>
<td class="new_line diff-line-num old" data-linenumber="388" style="width: 35px; color: rgba(0,0,0,0.3); border-right-width: 1px; border-right-color: #fac5cd; border-right-style: solid; padding: 0 5px;" align="right" bgcolor="#f9d7dc">
</td>
<td class="line_content old" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#fbe9eb">
<pre style="margin: 0;">-<span id="LC400" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">kcapi_aead_stream_op</span><span class="p">(</span><span class="n" style="color: #333;">ctx</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">handle</span><span class="p">,</span> <span class="n" style="color: #333;">iov</span><span class="p">,</span> <span class="n" style="color: #333;">iovlen</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><</span> <span class="mi" style="color: #099;">0</span><span class="p">){</span></span>
</pre>
</td>
</tr>
<tr class="line_holder new" id="">
<td class="old_line diff-line-num new" data-linenumber="401" 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">
</td>
<td class="new_line diff-line-num new" data-linenumber="388" 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">
388
</td>
<td class="line_content new" style="padding-left: 0.5em; padding-right: 0.5em;" bgcolor="#ecfdf0">
<pre style="margin: 0;">+<span id="LC388" class="line" lang="c"> <span class="k" style="font-weight: 600;">if</span> <span class="p">(</span><span class="n" style="color: #333;">kcapi_aead_stream_op</span><span class="p">(</span><span class="n" style="color: #333;">ctx</span><span class="o" style="font-weight: 600;">-></span><span class="n" style="color: #333;">handle</span><span class="p">,</span> <span class="n" style="color: #333;">iov</span><span class="p">,</span> <span class="mi" style="color: #099;">1</span><span class="p">)</span> <span class="o" style="font-weight: 600;"><</span> <span class="mi" style="color: #099;">0</span><span class="p">){</span></span>
</pre>
</td>
</tr>
</table>
<div style="">
<p dir="auto">Well, as we are in decryption, the tag truly is of no concern for the output. Yes, it can be ignored. But the AAD buffer should still remain to be part of the IOVEC. I.e. iov[0] should point to the AAD buffer and iov[1] to the pt buffer.</p>
</div>
</div>
<div class="footer" style="margin-top: 10px;">
<p style="font-size: small; color: #666;">
—
<br>
Reply to this email directly or <a href="https://gitlab.com/gnutls/gnutls/-/merge_requests/1404#note_551241704">view it on GitLab</a>.
<br>
You're receiving this email because of your account on gitlab.com.
If you'd like to receive fewer emails, you can
<a href="https://gitlab.com/-/sent_notifications/2f0bdf2432d03dceab7606a0938c00a1/unsubscribe">unsubscribe</a>
from this thread or
adjust your notification settings.
<script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","action":{"@type":"ViewAction","name":"View Merge request","url":"https://gitlab.com/gnutls/gnutls/-/merge_requests/1404#note_551241704"}}</script>
</p>
</div>
</body>
</html>