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What is the purpose of server SSL certificate updates? Many people do not understand, today, in order to let you know more about the role of server SSL certificate update, so give you a summary of the following content, let's look down together.

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

After the certificate expires, we can only change the server certificate so that the HTTPS website can function properly. What is the purpose of server SSL certificate updates? Why do we have to update the server certificate?

What is the use of server SSL certificate updates? In fact, the main goal is to keep your website safe.

Before we explain 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, the data can only be decrypted using the private key. The server SSL certificate is based on asymmetric encryption. As long as the server guarantees that the private key will not be stolen, it is impossible for a third party to decrypt the data using the public key except the server itself. The server certificate is in this form to ensure the security of the HTTPS website.

However, the public and private keys are actually a string of strings. Although the attacker can not get the private key, in theory, as long as he can get the public key, using exhaustive methods, he is bound to be able to calculate the corresponding private key. As long as the attacker can deduce the private key, then HTTPS has no security to speak of.

In terms of today's computer computing power, it takes about two years to reckon a private key scientist. That is to say, a pair of public and private keys will be at risk of being cracked in two years' time. In order to ensure security, according to international norms, the server SSL certificate can only be valid for two years at most, and the certificate must be replaced after two years. In fact, the purpose of replacing the certificate is to replace the public and private keys.

How do I change the server SSL certificate?

Now that we know the function and reason of replacing the certificate, let's talk about how to replace the certificate below.

We know that the purpose of replacing certificates is to replace public and private keys, so renewal of certificates and re-application for certificates can actually achieve the purpose of replacing public and private keys. So should the certificate be renewed or re-applied for? That depends on your actual situation.

Certificate renewal

Certificate renewal is to apply to your original SSL certificate authority for renewal of your certificate. The renewal certificate will retain your original information and issue a new certificate for you. Since you have reviewed the information when you applied for the certificate, it is faster to issue the certificate when the certificate is renewed. But the problem is, if you originally applied for the certificate is not suitable or the price is more expensive, then the certificate renewal is unable to replace the new certificate type.

Reapply

If you think the price of the previous SSL certificate is relatively high, you can choose a new agency to reapply for the certificate. As you are applying for a new certificate, you need to conduct another data review before you can issue the certificate.

It is really necessary to choose which form to replace the certificate according to your actual situation. If you just need to change the SSL certificate, you can refer to the price of the SSL certificate on this site. for more information about the SSL certificate, you can contact our customer service.

These are the details of what the server SSL certificate update is, and whether there is any gain after reading it? If you want to know more about it, welcome to the industry information!

SSL certificate securely encrypts the website, which can effectively prevent hijacking, prevent your website from being maliciously implanted with advertisements, prevent tampering and monitoring from leaking users' passwords, and optimize the SEO ranking of search engines with SSL certificates.

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