They may choose not to spider over HTTPS, or they may choose to rate lower those sites that are available only over HTTPS, or they may choose to do any number of things. But they can certainly spider the Web over HTTPS just as easily as your browser can view a single Web page over HTTPS.
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SSL 保护通信安全，但它不提供内容访问机制。
只要没有密码/身份验证限制对页面的访问，搜索引擎就没有理由无法对它们建立索引。
SSL secures the communications, it does not provide content access mechanisms.
As long as there is no password/authentication restricting access to the pages, there's no reason a search engine would be unable to index them.
是的。
他们可能选择不通过 HTTPS 进行蜘蛛抓取，或者他们可能选择降低那些仅通过 HTTPS 可用的网站的评级，或者他们可能选择执行任意数量的操作。但他们当然可以通过 HTTPS 抓取网络，就像您的浏览器可以通过 HTTPS 查看单个网页一样轻松。
Yes.
They may choose not to spider over HTTPS, or they may choose to rate lower those sites that are available only over HTTPS, or they may choose to do any number of things. But they can certainly spider the Web over HTTPS just as easily as your browser can view a single Web page over HTTPS.