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<title>Verify that the ciphertext includes a valid tag</title>
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<h1 class="refname">sodium_crypto_aead_chacha20poly1305_decrypt</h1>
<p class="verinfo">(PHP 7 >= 7.2.0)</p><p class="refpurpose"><span class="refname">sodium_crypto_aead_chacha20poly1305_decrypt</span> — <span class="dc-title">Verify that the ciphertext includes a valid tag</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.sodium-crypto-aead-chacha20poly1305-decrypt-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">string</span> <span class="methodname"><strong>sodium_crypto_aead_chacha20poly1305_decrypt</strong></span>
( <span class="methodparam"><span class="type">string</span> <code class="parameter">$ciphertext</code></span>
, <span class="methodparam"><span class="type">string</span> <code class="parameter">$ad</code></span>
, <span class="methodparam"><span class="type">string</span> <code class="parameter">$nonce</code></span>
, <span class="methodparam"><span class="type">string</span> <code class="parameter">$key</code></span>
)</div>
<p class="para rdfs-comment">
</p>
<div class="warning"><strong class="warning">Warning</strong><p class="simpara">This function is
currently not documented; only its argument list is available.
</p></div>
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<div class="refsect1 parameters" id="refsect1-function.sodium-crypto-aead-chacha20poly1305-decrypt-parameters">
<h3 class="title">Parameters</h3>
<dl>
<dt>
<code class="parameter">ciphertext</code></dt>
<dd>
<p class="para">
</p>
</dd>
<dt>
<code class="parameter">ad</code></dt>
<dd>
<p class="para">
</p>
</dd>
<dt>
<code class="parameter">nonce</code></dt>
<dd>
<p class="para">
</p>
</dd>
<dt>
<code class="parameter">key</code></dt>
<dd>
<p class="para">
</p>
</dd>
</dl>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.sodium-crypto-aead-chacha20poly1305-decrypt-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
</p>
</div>
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