Shulou(Shulou.com)06/01 Report--

Xiaobian to share with you the reasons for the renewal of SSL Certificates due, I hope you read this article after the harvest, let us discuss it together!

Users who have purchased and deployed server certificates may encounter such a problem. When the certificate expires, browsers visiting HTTPS websites will prompt security warnings.

After the certificate expires, we can only replace the server certificate, and the HTTPS website will work normally. What does server SSL Certificates update do? Why do we have to update server certificates?

What is the use of server SSL Certificates updates? The main goal is to keep your website safe.

Before explaining this, we need to understand asymmetric encryption.

Asymmetric encryption is to generate a pair of keys (public key and private key) for the user. After encrypting the data with the public key, only the private key can be decrypted. Server SSL Certificates are based on asymmetric encryption. As long as the server guarantees that the private key will not be stolen, the public key will be used to encrypt the data. Except for the server itself, it is impossible for a third party to decrypt it. Server certificates are used in this way to secure HTTPS websites.

However, public and private keys are actually strings. Although the attacker cannot obtain the private key, theoretically, as long as he can obtain the public key, he will be able to deduce the corresponding private key using the exhaustive method. As long as an attacker can deduce the private key, HTTPS is no longer secure.

Given today's computing power, scientists believe it takes about two years to exhaustively calculate a private key. That is to say, a pair of public and private keys will have the risk of being cracked after two years. In order to ensure security, the international standard rules, server SSL Certificates valid for up to two years, two years after the certificate must be replaced, in fact, the purpose of replacing the certificate is to replace the public and private keys.

How do I replace Server SSL Certificates?

After knowing the role and reasons for replacing the certificate, we will talk about how to replace the certificate below.

We know that the purpose of certificate renewal is to replace the public and private keys. Therefore, certificate renewal and certificate re-application can actually achieve the purpose of replacing the public and private keys. So should I renew my certificate or reapply for it? That depends on your actual situation.

certificate renewal

Certificate renewal is to apply to your original SSL Certificates organization for renewal of your certificate. A renewed certificate will retain your original information and issue you with a new certificate. Since you have already reviewed the information at the time of your certificate application, it is faster to issue a certificate when it is renewed. But the problem is, if the certificate that you apply for originally does not suit or the price is more expensive, so certificate renewal is unable to replace new certificate type.

reapply

If you feel that the previous SSL Certificates are more expensive, you can choose a new agency to reapply for the certificate. Since it is a re-application for a certificate, you need to review the information again before you can issue a certificate.

The specific form of certificate replacement really needs to be selected according to everyone's actual situation.

After reading this article, I believe that you have a certain understanding of the reasons for the renewal of SSL Certificates upon expiration. If you want to know more relevant knowledge, please pay attention to the industry information channel. Thank you for reading!

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