AI 编程工具xxxxxxxxxx<html><head> <meta charset="utf-8"> <title>高手教程(study.p2hp.com)</title> </head><body><form action="demo_keygen.php" method="get" id="secureform"> Username: <input type="text" name="usr_name"> <input type="submit"></form><p>下面的注册机领域在表单之外,但它仍属于该表单的一部分。</p>Encryption: <keygen name="security" form="secureform"><p><strong>注意：</strong> IE 浏览器不支持 keygen 标签。</p></body></html>