The SSL certificate analysis tool can query the ssl certificate in the website, and parse the basic information contained in the ssl certificate: creation time and valid time of the certificate, issuer, user, serial number of the ssl certificate, sct list and algorithm And the domain name bound to the certificate, etc., so that we can better understand the situation of the SSL certificate in our website.
What is an ssl certificate?
SSL certificate is also called SSL server certificate, and the full name is Secure socket layer. It is a kind of digital certificate, which is often configured on the server.
The SSL certificate complies with the SSL protocol. It is usually issued by a trusted digital certificate authority, CA, after verifying the identity of the server. It establishes a relatively secure channel between the client’s browser and the website’s Web server. When interacting, the ssl certificate will encrypt and hide the transmitted data; to ensure the integrity of the data, the ssl certificate has the functions of data transmission encryption and server authentication.
A valid SSL certificate includes a private key and a public key. The public key is used to encrypt data, and the private key is used to decrypt.
The public information contained in the SSL certificate can be viewed in the browser in addition to using the SSL parsing tool. We only need to enter the URL in the browser. If the website supports https, there will usually be a small lock icon. After selecting him, click Show connection information, find the certificate, and then view the general options and detailed information of the site certificate in the exposure that appears.