When you go between pages, do you ever notice a difference at the beginning of the URLs? Some pages start with “https://” while others begin with “http://.” What does that extra “s” mean? Simply, it shows that your connection to that page is secure and encrypted; any sensitive information you entered is securely shared. This technology is used thanks to SSL, which stands for “Secure Sockets Layer.”
In this article, we explained what SSL and TLS are briefly, and then we focused on the types of certificates and how to get such certificates.
What Is the SSL certificate?
It is a certificate, including encrypted links between web servers and web browsers. This certificate ensures that your data stays private during the transfer.
When you enter a website, you are susceptible to attacks and threats if your connection to the website is insecure. Hackers try to find ways to steal your information. For example, if you entered a website that does not have a certificate, hackers may place a program that enables them to monitor what you type on this website. That may include your private information, such as credit card numbers.
It Is Frightening, Right?
However, this is a protocol that establishes a secure connection. When you visit a page using an SSL, your browser will connect to the server, then look at the SSL certificate and ensure no leak of information.
What Is TLS?
TLS (Transport Layer Security) is a protocol that regulates data preservation on communication over the Internet. Its working principle is similar to SSLs. TLS ensures the security of communication over the Internet, and it also allows you to encrypt tools like emails and messages. TLS certificates are the evolved versions of these certificates, and both of those certificates are given from one common authority.
What Is an SSL / TLS handshake?
Since we learned about this certificate and TLS briefly, let’s see what an “SSL / TLS handshake” is. It is the deal between the client and the server. It determines if the SSL or TLS will be used on the website and how the information will be securely transferred. The process proceeds as this:
- To form a negotiation, the administrator must prepare two files involving the private key and digital certificates.
- When the client and the server are ready to negotiate, the authentication process follows.
- The client authenticates the certificate of the server, and it gives its encrypted information.
- Then, the server decrypts this information.
- When this process is completed, both the client and server have key pairs, ensuring all the future data will be encrypted.
Types of SSL Certificates
There are three main factors affecting the type of the SSL certificate: validation, encryption, and the number of domains. Those factors all have three subtypes. All the types are available on the SSL website, and the processes are carried out by a trusted CA (Certificate Authority).
Extended Validation (EV) Certificate
This type of certificate allows you to have the padlock icon on the address bar, “https,” business country, and name. Those features differ you from the spams.
However, Extended Validation (EV) Certificates are the most expensive ones among the others. Since you perform certain legal acts like online transactions, you must prove that the domain you use is yours. If you are planning to work on those, you should consider having an EV SSL.
Organization Validated (OV SSL) Certificate
This type of certificate proves the existence of the organization and the domain. It offers medium encryption since the authentication process proceeds in two steps:
- Firstly, the CA verifies the owner of the domain
- Then, it verifies if the organization acts legally.
OV SSL uses a green padlock icon and the company’s name next to it. If you see that icon, you can understand that this website does not offer a purchase option but still wants to provide medium encryption.
Domain Validation (DV) Certificate
This type of certificate offers the lowest level of encryption. You will see a green padlock followed by the URL on websites using DV SSL. You can quickly apply for those certificates since it only requires few documents. The difference of that type is that you will not know who receives the encrypted data. Those are suggested for companies who cannot afford EV SSLs. DV SSLs will still work.
Wildcard SSL Certificate
Wildcard SSL Certificates are under the “number of domains” classes. Those certificates procure that if you purchase a certificate for one domain, you can use them also for the subdomains. They are beneficial for having a certificate for the whole domain rather than having one certificate for separate subdomains.
Unified Communications (UCC) SSL Certificate
Unified Communications SSL Certificates are used for creating a linkage between separate domains and the server. For those certificates, it is allowed to use one certificate for different domains. UCC displays a padlock icon in the browse bar to ask for verification. They can be considered as EV SSL types, but the number of domains is different.
Single Domain SSL Certificate
As understood from the name, it only preserves one domain. You should keep in mind that you cannot use a Single Domain SSL for a subdomain if you are readily using it for a larger domain.
How to get an SSL Certificate for a Website
If you need an SSL certificate but don’t know what to do, you can follow these steps:
- You should determine what type of certificate you will need.
- You should decide whether you will need extra protection (if you are in the finance industry, you will need that).
- Choose the period of validity.
FAQ on SSL
Yes, it is suitable for SEO. Even if the primary purpose of this certificate is to secure the information, there are also benefits for SEO.
Basically, you can look at the URL. If you see a padlock icon or “https” instead of “http,” you can understand that this website is protected.
It stands for “Secure Sockets Layer,” meaning that the protocol maintaining the authentication, encryption, and decryption process.
It is highly recommended to use a service providing certificates since not using a protection system would leak information.
It may function as it does all the time, but it will be susceptible to hackers’ attacks or threats.
Conclusion on SSL
In this article, we explained what the SSL and TLS are briefly, and then we looked at the types. If you are looking for ways to get these certificates, you can check Company Name. It offers the best solutions to your needs. If it falls short of your expectations then your best bet is to check out our guide on HTML; namely, how to make a table in HTML, or any other guide on HTML to teach you the interworking of a website.