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<title>FIDO_ASSERT_ALLOW_CRED(3)</title>
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<table class="head">
<tr>
<td class="head-ltitle">FIDO_ASSERT_ALLOW_CRED(3)</td>
<td class="head-vol">FreeBSD Library Functions Manual</td>
<td class="head-rtitle">FIDO_ASSERT_ALLOW_CRED(3)</td>
</tr>
</table>
<div class="manual-text">
<section class="Sh">
<h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1>
<code class="Nm">fido_assert_allow_cred</code>,
<code class="Nm">fido_assert_empty_allow_list</code> —
<div class="Nd">manage allow lists in a FIDO2 assertion</div>
</section>
<section class="Sh">
<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1>
<code class="In">#include <<a class="In">fido.h</a>></code>
<p class="Pp"><var class="Ft">int</var>
<br/>
<code class="Fn">fido_assert_allow_cred</code>(<var class="Fa" style="white-space: nowrap;">fido_assert_t
*assert</var>, <var class="Fa" style="white-space: nowrap;">const unsigned
char *ptr</var>, <var class="Fa" style="white-space: nowrap;">size_t
len</var>);</p>
<p class="Pp"><var class="Ft">int</var>
<br/>
<code class="Fn">fido_assert_empty_allow_list</code>(<var class="Fa" style="white-space: nowrap;">fido_assert_t
*assert</var>);</p>
</section>
<section class="Sh">
<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
The <code class="Fn">fido_assert_allow_cred</code>() function adds
<var class="Fa">ptr</var> to the list of credentials allowed in
<var class="Fa">assert</var>, where <var class="Fa">ptr</var> points to a
credential ID of <var class="Fa">len</var> bytes. A copy of
<var class="Fa">ptr</var> is made, and no references to the passed pointer are
kept. If <code class="Fn">fido_assert_allow_cred</code>() fails, the existing
list of allowed credentials is preserved.
<p class="Pp">For the format of a FIDO2 credential ID, please refer to the Web
Authentication (webauthn) standard.</p>
<p class="Pp">The <code class="Fn">fido_assert_empty_allow_list</code>()
function empties the list of credentials allowed in
<var class="Fa">assert</var>.</p>
</section>
<section class="Sh">
<h1 class="Sh" id="RETURN_VALUES"><a class="permalink" href="#RETURN_VALUES">RETURN
VALUES</a></h1>
The error codes returned by <code class="Fn">fido_assert_allow_cred</code>() and
<code class="Fn">fido_assert_empty_allow_list</code>() are defined in
<code class="In"><<a class="In">fido/err.h</a>></code>. On success,
<code class="Dv">FIDO_OK</code> is returned.
</section>
<section class="Sh">
<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE
ALSO</a></h1>
<a class="Xr" href="fido_assert_new.html">fido_assert_new(3)</a>,
<a class="Xr" href="fido_assert_set_authdata.html">fido_assert_set_authdata(3)</a>,
<a class="Xr" href="fido_dev_get_assert.html">fido_dev_get_assert(3)</a>
</section>
</div>
<table class="foot">
<tr>
<td class="foot-date">December 1, 2022</td>
<td class="foot-os">Yubico AB</td>
</tr>
</table>
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