启用HTTPS会让我们的网站更加安全，今年百度也曾明确表示HTTPS是大势所趋，建议我们使用https，旨在让每个网站都启用HTTPS加密的 Let's Encrypt CA 宣布将于2018年1月免费提供通配符证书（Wildcard certificate）。通配符证书是一种可被多个子域使用的公钥证书。这意味着，单个证书可用于提供多台服务器或一台服务器托管的多个子域名的网页加密，显著降低了个人和小型企业采用HTTPS的门槛。
Let's Encrypt 表示，它希望通配符证书能帮助 Web 加快实现100%HTTPS，Let's Encrypt 前不久刚刚宣布签发了一亿个证书。
Let’s Encrypt will begin issuing wildcard certificates in January of 2018. Wildcard certificates are a commonly requested feature and we understand that there are some use cases where they make HTTPS deployment easier. Our hope is that offering wildcards will help to accelerate the Web’s progress towards 100% HTTPS.
Let’s Encrypt is currently securing 47 million domains via our fully automated DV certificate issuance and management API. This has contributed heavily to the Web going from 40% to 58% encrypted page loads since Let’s Encrypt’s service became available in December 2015. If you’re excited about wildcard availability and our mission to get to a 100% encrypted Web, we ask that you contribute to our summer fundraising campaign.
A wildcard certificate can secure any number of subdomains of a base domain (e.g. *.example.com). This allows administrators to use a single certificate and key pair for a domain and all of its subdomains, which can make HTTPS deployment significantly easier.
Wildcard certificates will be offered free of charge via our upcoming ACME v2 API endpoint. We will initially only support base domain validation via DNS for wildcard certificates, but may explore additional validation options over time. We encourage people to ask any questions they might have about wildcard certificate support on our community forums.
We decided to announce this exciting development during our summer fundraising campaign because we are a nonprofit that exists thanks to the generous support of the community that uses our services. If you’d like to support a more secure and privacy-respecting Web, donate today!
We’d like to thank our community and our sponsors for making everything we’ve done possible. If your company or organization is able to sponsor Let’s Encrypt please email us at email@example.com.
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