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<p class="details" style="font-style: italic; color: #777;">
<a href="https://gitlab.com/nmav">Nikos Mavrogiannopoulos</a>
started a new discussion
on <a href="https://gitlab.com/gnutls/gnutls/merge_requests/695#note_92864809">lib/stek.c</a>:
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<pre style="margin: 0;">+<span id="LC20" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> *</span></span>
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<pre style="margin: 0;">+<span id="LC21" class="line" lang="c"><span class="cm" style="color: #998; font-style: italic;"> */</span></span>
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<pre style="margin: 0;">+<span id="LC22" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#include "gnutls_int.h"</span></span>
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<pre style="margin: 0;">+<span id="LC23" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#include <math.h></span></span>
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<pre style="margin: 0;">+<span id="LC24" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#include "stek.h"</span></span>
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<pre style="margin: 0;">+<span id="LC25" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC26" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define T0 0</span></span>
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<pre style="margin: 0;">+<span id="LC27" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC28" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define NAME_POS (0)</span></span>
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<pre style="margin: 0;">+<span id="LC29" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define KEY_POS (TICKET_KEY_NAME_SIZE)</span></span>
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<pre style="margin: 0;">+<span id="LC30" class="line" lang="c"><span class="cp" style="color: #999; font-weight: 600;">#define MAC_SECRET_POS (TICKET_KEY_NAME_SIZE+TICKET_CIPHER_KEY_SIZE)</span></span>
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<pre style="margin: 0;">+<span id="LC31" class="line" lang="c"></span>
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<pre style="margin: 0;">+<span id="LC32" 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;">totp_sha3</span><span class="p">(</span><span class="n" style="color: #333;">gnutls_session_t</span> <span class="n" style="color: #333;">session</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC33" class="line" lang="c"> <span class="kt" style="color: #458; font-weight: 600;">uint64_t</span> <span class="n" style="color: #333;">t</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC34" class="line" lang="c"> <span class="k" style="font-weight: 600;">const</span> <span class="n" style="color: #333;">gnutls_datum_t</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">secret</span><span class="p">,</span></span>
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<pre style="margin: 0;">+<span id="LC35" class="line" lang="c"> <span class="n" style="color: #333;">gnutls_datum_t</span> <span class="o" style="font-weight: 600;">*</span><span class="n" style="color: #333;">out</span><span class="p">)</span></span>
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<p dir="auto">thanks for updating it to a stack stored value. Note that a convention used all over the lib is to pass such values as an array, e.g., <code>uint8_t out[MAX_HASH_SIZE]</code>. The datum form is used when the function assigns the pointers in it. The array form gives also a better hint to compiler and static analyzers about the constraints.</p>
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