代码示例:(标识:eg_html5_keygen)
<!DOCTYPE HTML>
<html>
<body>

<form action="/index/demo/form_current.html" method="get">
用户名:<input type="text" name="usr_name" />
加密:<keygen name="security" />
<input type="submit" />
</form>

</body>
</html>
运行结果: