Question

我只是想知道YouTube SSL证书是如何运作的，因为它说它是发给* .google.com。

我认为通配符SSL证书只适用于子域？

提前致谢，弗朗西斯

Answer 1

证书中的公用名（CN）仅在没有DNS主题备用名称时使用（请参阅RFC 2818 Section 3.1）。当SAN存在时，它们中的任何一个都有助于识别服务器。 YouTube使用的证书包含以下所有内容：

DNS Name: *.google.com
DNS Name: *.android.com
DNS Name: *.appengine.google.com
DNS Name: *.cloud.google.com
DNS Name: *.google-analytics.com
DNS Name: *.google.ca
DNS Name: *.google.cl
DNS Name: *.google.co.in
DNS Name: *.google.co.jp
DNS Name: *.google.co.uk
DNS Name: *.google.com.ar
DNS Name: *.google.com.au
DNS Name: *.google.com.br
DNS Name: *.google.com.co
DNS Name: *.google.com.mx
DNS Name: *.google.com.tr
DNS Name: *.google.com.vn
DNS Name: *.google.de
DNS Name: *.google.es
DNS Name: *.google.fr
DNS Name: *.google.hu
DNS Name: *.google.it
DNS Name: *.google.nl
DNS Name: *.google.pl
DNS Name: *.google.pt
DNS Name: *.googleapis.cn
DNS Name: *.googlecommerce.com
DNS Name: *.gstatic.com
DNS Name: *.urchin.com
DNS Name: *.url.google.com
DNS Name: *.youtube-nocookie.com
DNS Name: *.youtube.com
DNS Name: *.youtubeeducation.com
DNS Name: *.ytimg.com
DNS Name: android.com
DNS Name: g.co
DNS Name: goo.gl
DNS Name: google-analytics.com
DNS Name: google.com
DNS Name: googlecommerce.com
DNS Name: urchin.com
DNS Name: youtu.be
DNS Name: youtube.com
DNS Name: youtubeeducation.com

YouTube SSL证书如何运作，它说* .google.com

1 个答案: