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?>
<div id="function.openssl-public-decrypt" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">openssl_public_decrypt</h1>
  <p class="verinfo">(PHP 4 &gt;= 4.0.6, PHP 5, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">openssl_public_decrypt</span> &mdash; <span class="dc-title">Decrypts data with public key</span></p>

 </div>
 
 <div class="refsect1 description" id="refsect1-function.openssl-public-decrypt-description">
  <h3 class="title">Descrizione</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>openssl_public_decrypt</strong></span>(<br>&nbsp;&nbsp;&nbsp;&nbsp;<span class="methodparam"><span class="type"><a href="language.types.string.php" class="type string">string</a></span> <code class="parameter">$data</code></span>,<br>&nbsp;&nbsp;&nbsp;&nbsp;<span class="methodparam"><span class="attribute"><a href="class.sensitiveparameter.php">#[\SensitiveParameter]</a> </span><span class="type"><a href="language.types.string.php" class="type string">string</a></span> <code class="parameter reference">&$decrypted_data</code></span>,<br>&nbsp;&nbsp;&nbsp;&nbsp;<span class="methodparam"><span class="type"><span class="type"><a href="class.opensslasymmetrickey.php" class="type OpenSSLAsymmetricKey">OpenSSLAsymmetricKey</a></span>|<span class="type"><a href="class.opensslcertificate.php" class="type OpenSSLCertificate">OpenSSLCertificate</a></span>|<span class="type"><a href="language.types.array.php" class="type array">array</a></span>|<span class="type"><a href="language.types.string.php" class="type string">string</a></span></span> <code class="parameter">$public_key</code></span>,<br>&nbsp;&nbsp;&nbsp;&nbsp;<span class="methodparam"><span class="type"><a href="language.types.integer.php" class="type int">int</a></span> <code class="parameter">$padding</code><span class="initializer"> = <strong><code><a href="openssl.padding.php#constant.openssl-pkcs1-padding">OPENSSL_PKCS1_PADDING</a></code></strong></span></span><br>): <span class="type"><a href="language.types.boolean.php" class="type bool">bool</a></span></div>

  <p class="para rdfs-comment">
   <span class="function"><strong>openssl_public_decrypt()</strong></span> decrypts
   <code class="parameter">data</code> that was previous encrypted via
   <span class="function"><a href="function.openssl-private-encrypt.php" class="function">openssl_private_encrypt()</a></span> and stores the result into
   <code class="parameter">decrypted_data</code>.  
  </p>
  <p class="para">
   You can use this function e.g. to check if the message was written by the
   owner of the private key.
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-function.openssl-public-decrypt-parameters">
  <h3 class="title">Elenco dei parametri</h3>
  <p class="para">
   <dl>
    
     <dt><code class="parameter">data</code></dt>
     <dd>
      <p class="para">
      </p>
     </dd>
    
    
     <dt><code class="parameter">decrypted_data</code></dt>
     <dd>
      <p class="para">
      </p>
     </dd>
    
    
     <dt><code class="parameter">public_key</code></dt>
     <dd>
      <p class="para">
       <code class="parameter">public_key</code> must be the public key that corresponds
       to the private key that was used to encrypt the data.
      </p>
     </dd>
    
    
     <dt><code class="parameter">padding</code></dt>
     <dd>
      <p class="para">
       <code class="parameter">padding</code> can be one of
       <strong><code><a href="openssl.padding.php#constant.openssl-pkcs1-padding">OPENSSL_PKCS1_PADDING</a></code></strong>,
       <strong><code><a href="openssl.padding.php#constant.openssl-no-padding">OPENSSL_NO_PADDING</a></code></strong>.
      </p>
     </dd>
    
   </dl>
  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.openssl-public-decrypt-returnvalues">
  <h3 class="title">Valori restituiti</h3>
  <p class="para">
   Restituisce <strong><code><a href="reserved.constants.php#constant.true">true</a></code></strong> in caso di successo, <strong><code><a href="reserved.constants.php#constant.false">false</a></code></strong> in caso di fallimento.
  </p>
 </div>


 <div class="refsect1 changelog" id="refsect1-function.openssl-public-decrypt-changelog">
  <h3 class="title">Log delle modifiche</h3>
  <table class="doctable informaltable">
   
    <thead>
     <tr>
      <th>Versione</th>
      <th>Descrizione</th>
     </tr>

    </thead>

    <tbody class="tbody">
     <tr>
      <td>8.0.0</td>
      <td>
       <code class="parameter">public_key</code> accepts an <span class="classname"><a href="class.opensslasymmetrickey.php" class="classname">OpenSSLAsymmetricKey</a></span>
       or <span class="classname"><a href="class.opensslcertificate.php" class="classname">OpenSSLCertificate</a></span> instance now;
       previously, a <a href="language.types.resource.php" class="link">resource</a> of type <code class="literal">OpenSSL key</code> or <code class="literal">OpenSSL X.509</code>
       was accepted.
      </td>
     </tr>

    </tbody>
   
  </table>

 </div>


 <div class="refsect1 seealso" id="refsect1-function.openssl-public-decrypt-seealso">
  <h3 class="title">Vedere anche:</h3>
  <p class="para">
   <ul class="simplelist">
    <li><span class="function"><a href="function.openssl-private-encrypt.php" class="function" rel="rdfs-seeAlso">openssl_private_encrypt()</a> - Encrypts data with private key</span></li>
    <li><span class="function"><a href="function.openssl-private-decrypt.php" class="function" rel="rdfs-seeAlso">openssl_private_decrypt()</a> - Decrypts data with private key</span></li>
   </ul>
  </p>
 </div>


</div><?php manual_footer($setup); ?>