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SSL Certificate Query

💡 Presentation mode: Owing to the browser security policy constraints, a pure front-end script cannot directly read the certificate binary stream of the external server. This tool is currently running in demonstration mode, showing the simulation security configuration of the domain name.

Depth parsing: the status of SSL certificates on the modern Internet

SSL (Secure Sockets Layer) and its successor TLS (Transport Layer) Security is the cornerstone of ensuring the security of Internet data transmission. When you see a little lock sign on the browser address bar, it means that the site is enabled HTTPS, your privacy is being protected.

Core function of SSL certificates

  • Synchronising folder Ensure that information transmitted between user browsers and servers (e.g. passwords, credit card numbers) is not tapped by third parties.
  • Organisation It proves that you are actually visiting a target site, not a fishing station that hackers fake.
  • Raise SEO ranking: Google has used HTTPS as one of the important signals in the search engine ranking. Possession of SSL The certificate website has easier access to better search locations.

How do you interpret the certificate search results?

(c) The issuing authority (CA): Only trusted CA (e.g. Let's Encrypt) The certificate issued by DigiCert will only be recognized by the browser. If you use a self-signed certificate, the user sees an unsafe warning.

Other Organiser SSL certificates usually have a validity period of 3 months to 1 year. Expiry certificates would result in the website not being accessible, and timely renewal was therefore essential.

Protocol version: TLS 1.3 is the most recent and safe version of the present. TLS 1.0 and 1.1 are considered unsafe and should be disabled in the server configuration.

How can the issue of the configuration of certificates be addressed?

If your website displays a certificate that does not match, usually it is because the domain name bound by the certificate does not match the actual domain name visited (e.g. the certificate is only given) www.subdomainname, but root domain is visited). This is when you need to apply for a multi-domain name certificate or a wildcard certificate.