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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_543279568">lib/accelerated/afalg.c</a>:
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<pre style="margin: 0;"> <span id="LC114" 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;">dst</span><span class="p">,</span> <span class="kt" style="color: #458; font-weight: 600;">size_t</span> <span class="n" style="color: #333;">dst_size</span><span class="p">)</span></span>
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101
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<pre style="margin: 0;"> <span id="LC115" class="line" lang="c"><span class="p">{</span></span>
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<pre style="margin: 0;"> <span id="LC116" class="line" lang="c">    <span class="k" style="font-weight: 600;">struct</span> <span class="n" style="color: #333;">kcapi_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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<td class="new_line diff-line-num new" data-linenumber="117" 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="LC117" 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>
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<pre style="margin: 0;">+<span id="LC118" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC119" class="line" lang="c">    <span class="n" style="color: #333;">iov</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><span class="kt" style="color: #458; font-weight: 600;">void</span> <span class="o" style="font-weight: 600;">*</span><span class="p">)</span><span class="n" style="color: #333;">src</span><span class="p">;</span></span>
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<pre style="margin: 0;">+<span id="LC120" class="line" lang="c">    <span class="n" style="color: #333;">iov</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;">src_size</span><span class="p">;</span></span>
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<pre style="margin: 0;">+<span id="LC121" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC122" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC123" 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_update</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="o" style="font-weight: 600;">&</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 class="p">{</span></span>
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<div style="">
<p dir="auto">Just to clarify: Is the GnuTLS API here only providing access to block cipher modes (e.g. CBC)? Or do we also have stream-cipher modes (CTR, CTS)?</p>
<p dir="auto">Note, in case of stream ciphers, the call kcapi_cipher_stream_update_last() is necessary to handle the last block that may not be a multiple of the block size any more.</p>
<p dir="auto">How does GnuTLS the case of stream ciphers when invoking the enc/dec operation multiple times?</p>
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