SSL certificate: purpose and benefits

Today, instead of “http”, you can increasingly see “https”, and for good reason. The last letter "s" is nothing more than a designation for the data encryption standard that becomes available when you purchase an SSL certificate. What is its essence and advantages - about this below.

How the certificate works

SSL is a modern data encryption protocol that provides a high level of security for information that is transmitted from the user's browser to the site and vice versa.

It works by creating a special secure channel. Information that is transmitted between the user and the browser is encrypted on one side and decrypted on the other. And the algorithms are constantly changing. In other words, even if someone manages to intercept the information, it is simply not possible to understand what it is about. Encryption algorithms are constantly changing, and there are keys only between the objects of the communication channel. Thus, you can safely enter personal data, bank card numbers (if, for example, a purchase is made on a commercial resource), without worrying that this information can get to intruders.

In order for this protection protocol to appear on the site, you must purchase SSL-certificate. After that, an image of a small padlock or a green strip appears in the address bar, as well as the letter “s” at the end of the abbreviation http - https.

Types of certificates

SSL protocols come in different types. The main difference between them is the principle of verification of information. According to this parameter, there are 3 main types of certificate:

  1. domain validation. Such protocols certify the rights to manage a domain.
  2. Organization Validation. In addition to the rights to the domain, this type of certificate also verifies the existence of a company or individual that owns the rights to use this protocol. When installing such an SSL, you will need to confirm the details of the person who connects it.
  3. extended validation. This type of certificate authenticates both the owner and the domain. But it is provided only after a detailed check of the company for which it is purchased.
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The price of protocols of different types also differs, as well as their functions. However, the stricter the certificate policy, the higher the level of protection it provides. Therefore, for owners interested in the security of their resource, it makes sense to study the capabilities of each SSL and invest in the best option in terms of reliability.

Selecting the appropriate certificate

When choosing the type of SSL protocol, you should focus not only on its security capabilities. An important characteristic is its purpose, compatibility with sites of one type or another. Therefore, when choosing, you need to focus on the purpose of the standard and the features of the web resource:

  • domain translation only. If SSL is purchased for the site of a legal entity, then Organization Validation is suitable. Individuals should purchase Domain Validation;
  • translation of several subdomains (child projects or regional divisions of the website). In such cases, you need to install a Wildcard certificate;
  • for multiple domains. SAN certificates are required. When installing them, they check the list of domains and the company;
  • banks, financial institutions, holdings, websites with billing. For such projects, Extended Validation is set.

In conclusion, we note that in addition to the protective function, an SSL certificate also helps in ranking. Today, search engine algorithms prefer more reliable resources that can protect user data, so websites without a protocol are losing ground.

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