I previously explained SSL in the article ”
“, but there are various types depending on the purpose and specifications.
Depending on the type of SSL, the reliability of the site or company may be questioned.
This time, we will explain the difference between the two types of SSL, “shared SSL” and “proprietary SSL”, and what kind of company should use which SSL.
What is shared SSL?
“Shared SSL” means that the SSL server certificate obtained on behalf of the company operating the server is shared and used by multiple users. One license, or rather a certificate, is shared and used by multiple users.
Currently, in some cases, when you sign a server contract, this shared SSL comes with it from the beginning.
Since it is included from the beginning, there is no need to update, and it has the advantage of being cheap and easy to use, but it is not suitable for always-on SSL, which requires the entire site to be
https
.
Also, shared SSL cannot be used with your own domain because the certificate is obtained by the server company on your behalf.
In other words, if you run a site with your own domain and use shared SSL, the disadvantage is that you will have to switch domains from the site you were previously accessing.
Additionally, shared SSL does not guarantee the identity of the site owner.
Even if it can be displayed, it lacks reliability because it contains information about the server company, which is different from the site owner.
From this point of view, although it is a low-cost and very easy to start certificate, it is better to use it with the understanding that there are significant disadvantages.
What is proprietary SSL?
“Original SSL” means issuing your own SSL server certificate for your own domain.
Reliability is increased because the name of the site owner and the certificate are the same, and security is also safe because encrypted communication is performed only for the target domain.
However, in terms of cost, it can cost several thousand to tens of thousands of yen per year, and some expensive items can cost up to several hundred thousand yen.
Although it is more expensive, it is a certificate that supports always-on SSL on https, and security is safe because it uses encrypted communication for your own domain, so it is very suitable for always-on SSL on your own domain. It is considered suitable.
There are three types of proprietary SSL: domain authentication type (abbreviation: DV), company authentication type (abbreviation: OV), and EV authentication type (extended validation, abbreviation: EV), and each type has its own characteristics.
Therefore, you will need to use different types of sites, such as sites with payment functions, sites with high name recognition and brand power, and sites affiliated with government agencies.
summary
◆ Regarding SSL, there are two options: shared SSL (where the SSL server certificate obtained by the server management company is shared and used by multiple users) and proprietary SSL (where a unique SSL server certificate is issued for a unique domain) There are two types of
◆
If you want to start cheap and hassle-free, we recommend shared SSL. However, since it is cheaper, it is less reliable and secure, so depending on the purpose, such as when you want to use your own domain, we recommend using a proprietary SSL.