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<h1 class="refname">openssl_private_encrypt</h1>
<p class="verinfo">(PHP 4 >= 4.0.6, PHP 5)</p><p class="refpurpose"><span class="refname">openssl_private_encrypt</span> — <span class="dc-title">Encrypts data with private key </span></p>
</div>
<div class="refsect1 description" id="refsect1-function.openssl-private-encrypt-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">bool</span> <span class="methodname"><strong>openssl_private_encrypt</strong></span>
( <span class="methodparam"><span class="type">string</span> <code class="parameter">$data</code></span>
, <span class="methodparam"><span class="type">string</span> <code class="parameter reference">&$crypted</code></span>
, <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <code class="parameter">$key</code></span>
[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$padding</code><span class="initializer"> = OPENSSL_PKCS1_PADDING</span></span>
] )</div>
<p class="para rdfs-comment">
<span class="function"><strong>openssl_private_encrypt()</strong></span> encrypts <em><code class="parameter">data</code></em>
with private <em><code class="parameter">key</code></em> and stores the result into
<em><code class="parameter">crypted</code></em>. Encrypted data can be decrypted via
<span class="function"><a href="function.openssl-public-decrypt.html" class="function">openssl_public_decrypt()</a></span>.
</p>
<p class="para">
This function can be used e.g. to sign data (or its hash) to prove that it
is not written by someone else.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.openssl-private-encrypt-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<span class="term"><em><code class="parameter">data</code></em></span>
<dd>
<p class="para">
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">crypted</code></em></span>
<dd>
<p class="para">
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">key</code></em></span>
<dd>
<p class="para">
</p>
</dd>
</dt>
<dt>
<span class="term"><em><code class="parameter">padding</code></em></span>
<dd>
<p class="para">
<em><code class="parameter">padding</code></em> can be one of
<strong><code>OPENSSL_PKCS1_PADDING</code></strong>,
<strong><code>OPENSSL_NO_PADDING</code></strong>.
</p>
</dd>
</dt>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.openssl-private-encrypt-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns <strong><code>TRUE</code></strong> on success or <strong><code>FALSE</code></strong> on failure.
</p>
</div>
<div class="refsect1 seealso" id="refsect1-function.openssl-private-encrypt-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"> <span class="function"><a href="function.openssl-public-encrypt.html" class="function" rel="rdfs-seeAlso">openssl_public_encrypt()</a> - Encrypts data with public key</span></li>
<li class="member"> <span class="function"><a href="function.openssl-public-decrypt.html" class="function" rel="rdfs-seeAlso">openssl_public_decrypt()</a> - Decrypts data with public key</span></li>
</ul>
</p>
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