../../../../com/lark/oapi/okio/ByteString.html" title="com.lark.oapi.okio中的类">ByteString</a>&nbsp;key)</pre>
<div class="block">Returns a sink that uses the SHA-256 HMAC algorithm to produce 256-bit hashes.</div>
</li>
</ul>
<a name="hmacSha512-com.lark.oapi.okio.Sink-com.lark.oapi.okio.ByteString-">
<!--   -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>hmacSha512</h4>
<pre>public static&nbsp;<a href="../../../../com/lark/oapi/okio/HashingSink.html" title="com.lark.oapi.okio中的类">Hash