t <span>&#45;&gt;</span> Unsigned.size_t</code></dt><dd><p><code>pk_ciphertext_length encryption plaintext_len</code></p><p>Get the length of the ciphertext that will correspond to a plaintext of the given length.</p></dd></dl><dl><dt class="spec value" id="val-pk_mac_length"><a href="#val-pk_mac_length" class="anchor"></a><code><span class="keyword">val</span> pk_mac_length : <span><a href="../Types/PkEncryption/index.html#type-t">Types.PkEncryption.t</a> Ctypes_static.ptr</span> <span>&#45;&gt;</span> Uns