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?>
<div id="function.sodium-crypto-core-ristretto255-from-hash" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">sodium_crypto_core_ristretto255_from_hash</h1>
  <p class="verinfo">(PHP 8 &gt;= 8.1.0)</p><p class="refpurpose"><span class="refname">sodium_crypto_core_ristretto255_from_hash</span> &mdash; <span class="dc-title">Mappe un vecteur</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-function.sodium-crypto-core-ristretto255-from-hash-description">
  <h3 class="title">Description</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>sodium_crypto_core_ristretto255_from_hash</strong></span>(<span class="methodparam"><span class="type"><a href="language.types.string.php" class="type string">string</a></span> <code class="parameter">$s</code></span>): <span class="type"><a href="language.types.string.php" class="type string">string</a></span></div>

  <p class="simpara">
   Mappe un vecteur <code class="parameter">s</code> de 64 octets à un élément de groupe.
   Disponible à partir de libsodium 1.0.18.
  </p>

  
<div class="warning"><strong class="warning">Avertissement</strong>
<p class="simpara">
 Cette fonction est actuellement non documentée ; seule la liste des arguments est disponible.
</p>
</div>

 </div>


 <div class="refsect1 parameters" id="refsect1-function.sodium-crypto-core-ristretto255-from-hash-parameters">
  <h3 class="title">Liste de paramètres</h3>
  <dl>
   
    <dt><code class="parameter">s</code></dt>
    <dd>
     <span class="simpara">
      Un vecteur de 64 octets.
     </span>
    </dd>
   
  </dl>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.sodium-crypto-core-ristretto255-from-hash-returnvalues">
  <h3 class="title">Valeurs de retour</h3>
  <p class="simpara">
   Renvoie une <a href="language.types.string.php" class="link">chaîne de caractères</a> aléatoire de 32 octets.
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-function.sodium-crypto-core-ristretto255-from-hash-examples">
  <h3 class="title">Exemples</h3>
  <div class="example" id="example-1">
   <p><strong>Exemple #1 Exemple de <span class="function"><strong>sodium_crypto_core_ristretto255_from_hash()</strong></span></strong></p>
   <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB">&lt;?php<br /><br />$hashes </span><span style="color: #007700">= </span><span style="color: #0000BB">sodium_hex2bin</span><span style="color: #007700">(<br />    </span><span style="color: #DD0000">'5d1be09e3d0c82fc538112490e35701979d99e06ca3e2b5b54bffe8b4dc772c1' </span><span style="color: #007700">.<br />    </span><span style="color: #DD0000">'4d98b696a1bbfb5ca32c436cc61c16563790306c79eaca7705668b47dffe5bb6'<br /></span><span style="color: #007700">);<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">sodium_bin2hex</span><span style="color: #007700">(</span><span style="color: #0000BB">sodium_crypto_core_ristretto255_from_hash</span><span style="color: #007700">(</span><span style="color: #0000BB">$hashes</span><span style="color: #007700">)));<br /></span><span style="color: #0000BB">?&gt;</span></span></code></div>
   </div>

   <div class="example-contents"><p>L&#039;exemple ci-dessus va afficher :</p></div>
   <div class="example-contents screen">
<div class="examplescode"><pre class="examplescode">string(64) &quot;3066f82a1a747d45120d1740f14358531a8f04bbffe6a819f86dfe50f44a0a46&quot;</pre>
</div>
   </div>
  </div>
 </div>


 <div class="refsect1 seealso" id="refsect1-function.sodium-crypto-core-ristretto255-from-hash-seealso">
  <h3 class="title">Voir aussi</h3>
  <ul class="simplelist">
   <li><span class="function"><a href="function.sodium-hex2bin.php" class="function" rel="rdfs-seeAlso">sodium_hex2bin()</a> - D&eacute;code une cha&icirc;ne binaire encod&eacute;e en hexad&eacute;cimal</span></li>
   <li><span class="function"><a href="function.sodium-bin2hex.php" class="function" rel="rdfs-seeAlso">sodium_bin2hex()</a> - Encode en hexad&eacute;cimal</span></li>
   <li><span class="function"><strong>sodium_crypto_core_ristretto255_from_hash()</strong></span></li>
  </ul>
 </div>


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