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<a href="#gcr-Key-Fingerprints.description" class="shortcut">Description</a>
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<h2><span class="refentrytitle"><a name="gcr-Key-Fingerprints.top_of_page"></a>Key Fingerprints</span></h2>
<p>Key Fingerprints — Fingerprints for public and private keys</p>
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<div class="refsynopsisdiv">
<a name="gcr-Key-Fingerprints.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guchar"><span class="returnvalue">guchar</span></a> * <a class="link" href="gcr-Key-Fingerprints.html#gcr-fingerprint-from-attributes" title="gcr_fingerprint_from_attributes ()">gcr_fingerprint_from_attributes</a> (<em class="parameter"><code><span class="type">GckAttributes</span> *attrs</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Data-Checksums.html#GChecksumType"><span class="type">GChecksumType</span></a> checksum_type</code></em>,
<em class="parameter"><code><span class="type">gsize</span> *n_fingerprint</code></em>);
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guchar"><span class="returnvalue">guchar</span></a> * <a class="link" href="gcr-Key-Fingerprints.html#gcr-fingerprint-from-subject-public-key-info" title="gcr_fingerprint_from_subject_public_key_info ()">gcr_fingerprint_from_subject_public_key_info</a>
(<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guchar"><span class="type">guchar</span></a> *key_info</code></em>,
<em class="parameter"><code><span class="type">gsize</span> n_key_info</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Data-Checksums.html#GChecksumType"><span class="type">GChecksumType</span></a> checksum_type</code></em>,
<em class="parameter"><code><span class="type">gsize</span> *n_fingerprint</code></em>);
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<div class="refsect1">
<a name="gcr-Key-Fingerprints.description"></a><h2>Description</h2>
<p>
These functions generate key fingerprints for public keys, certificates and
key data. The fingerprints are created so that they they will be identical
for a key and its corresponding certificate.
</p>
<p>
Note that in the case of certificates these are not fingerprints of the
actual certificate data, but rather of the public key contained in a
certificate.
</p>
<p>
These fingerprints are created using the subjectPublicKeyInfo ASN.1 structure.
</p>
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<a name="gcr-Key-Fingerprints.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="gcr-fingerprint-from-attributes"></a><h3>gcr_fingerprint_from_attributes ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guchar"><span class="returnvalue">guchar</span></a> * gcr_fingerprint_from_attributes (<em class="parameter"><code><span class="type">GckAttributes</span> *attrs</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Data-Checksums.html#GChecksumType"><span class="type">GChecksumType</span></a> checksum_type</code></em>,
<em class="parameter"><code><span class="type">gsize</span> *n_fingerprint</code></em>);</pre>
<p>
Create a key fingerprint for a certificate, public key or private key.
Note that this is not a fingerprint of certificate data, which you would
use <a class="link" href="GcrCertificate.html#gcr-certificate-get-fingerprint" title="gcr_certificate_get_fingerprint ()"><code class="function">gcr_certificate_get_fingerprint()</code></a> for.
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<td><p><span class="term"><em class="parameter"><code>attrs</code></em> :</span></p></td>
<td>attributes for key or certificate</td>
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<td><p><span class="term"><em class="parameter"><code>checksum_type</code></em> :</span></p></td>
<td>the type of fingerprint to create</td>
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<td><p><span class="term"><em class="parameter"><code>n_fingerprint</code></em> :</span></p></td>
<td>the length of fingerprint returned</td>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the
fingerprint or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if the input was invalid. <span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>][<acronym title="NULL is ok, both for passing and for returning."><span class="acronym">allow-none</span></acronym>][<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=n_fingerprint]</span>
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<div class="refsect2">
<a name="gcr-fingerprint-from-subject-public-key-info"></a><h3>gcr_fingerprint_from_subject_public_key_info ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guchar"><span class="returnvalue">guchar</span></a> * gcr_fingerprint_from_subject_public_key_info
(<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guchar"><span class="type">guchar</span></a> *key_info</code></em>,
<em class="parameter"><code><span class="type">gsize</span> n_key_info</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Data-Checksums.html#GChecksumType"><span class="type">GChecksumType</span></a> checksum_type</code></em>,
<em class="parameter"><code><span class="type">gsize</span> *n_fingerprint</code></em>);</pre>
<p>
Create a key fingerprint for a DER encoded subjectPublicKeyInfo.
</p>
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<td><p><span class="term"><em class="parameter"><code>key_info</code></em> :</span></p></td>
<td>DER encoded subjectPublicKeyInfo structure. <span class="annotation">[<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=n_key_info]</span>
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<td><p><span class="term"><em class="parameter"><code>n_key_info</code></em> :</span></p></td>
<td>length of DER encoded structure</td>
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<td><p><span class="term"><em class="parameter"><code>checksum_type</code></em> :</span></p></td>
<td>the type of fingerprint to create</td>
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<td><p><span class="term"><em class="parameter"><code>n_fingerprint</code></em> :</span></p></td>
<td>the length of fingerprint returned</td>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the
fingerprint or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if the input was invalid. <span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>][<acronym title="NULL is ok, both for passing and for returning."><span class="acronym">allow-none</span></acronym>][<acronym title="Parameter points to an array of items."><span class="acronym">array</span></acronym> length=n_fingerprint]</span>
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