What is SSL? Definition and how SSL works

What is SSL? Definition and how SSL works

What-is-SSL

Have you ever seen that some URLs start with "HTTP: //" while others start with "https: //"? Perhaps you noticed that when you browse websites like banks, online payments, where you need to give sensitive information, such as when you pay online bills.

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But where did the extra "s" come from, and what does that mean?

To put it simply, additional "s" means that your connection to that website is secure and any data you enter is securely encrypted. The technology that gives little power to "s" is called SSL.

SSL Meaning 

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SSL is a standard security protocol for installing encrypted links between servers and web browsers. This link ensures that all the data exchange between the browser and the server is secure.

SSL Full Form

Full Form of SSL is - Secure Sockets Layer

SSL is the flower form -

Secure Sockets Layer / Secure Sockets Layer

What is SSL?

What-is-SSL

SSL (Secure Sockets Layer) is an encryption technology employed by websites to secure the connection between the site and their site visitors.

The most extensive use of SSL is to secure those pages where users have to give sensitive information such as credit card numbers or login details.

In recent years, the website owner has been encouraged to implement SSL encryption on its entire site, the major search engine providers have provided SEO benefits to https pages.

SSL encryption is particularly useful for e-commerce websites because it helps them build trust with their customers.

"SSL is standard security technology to establish an encrypted link between a web server and a browser. This link ensures that all data passed between the web server and the browser remain private. "

Let's understand it deeply-

When you come to a website page, which contains a form, you fill that form and click the 'submit' button, the information you enter can be intercepted by hackers on an unsafe website...

This information can be anything from details given for any bank transactions to high-level information, which you want to enter in the register for the offer.

In Hacker Lingo, this "interception" is often called "man-in-the-middle attack". The actual attack can happen in many ways, but one of the most common is: A hacker keeps a small, unrecoverable program on a server hosting a website. The program waits in the background until a visitor starts writing the information on the website, and as soon as someone fills its information, the program starts capturing that information and then sending it back to the hacker. To become active. It looks scary, but it's not a Sci-Fi movie.

Deliver this when you visit an encrypted website with SSL, your browser will create a connection with the web server, see the SSL certificate, and then tie your browser and server together. This binding connection is secure, so there is no person other than you and the website which can see what you are typing in your browser and submitting which information.

This connection occurs immediately, and in fact, many people say that it is now faster than connecting to an unsafe website. All you have to do is go to a website with SSL, and your connection will be automatically secured.

Internet Security and Secure Online Transactions

As companies and organizations offer more online services and transactions, their online transactions require internet security, a priority and a requirement to ensure that sensitive information - such as credit card numbers - only valid online businesses Transmitting.

In order to keep customers' information private and safe, companies and organizations need to add SSL certificates to their websites to enable secure online transactions.

What are SSL certificates and why do I need them?

SSL certificates are an essential component of the data encryption process that secures Internet transactions. They are digital passports that provide authentication to protect the privacy and integrity of website communications with browsers.

The work of SSL certificates is to start secure sessions with the user's browser through the secure sockets layer (SSL) protocol. This secure connection cannot be installed without SSL certificates, which digitally associates company information with a cryptographic key.

Any organization that engages in e-commerce should have an SSL certificate on its web server to ensure customer and company information, as well as to ensure the security of financial transactions.

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Why is SSL important?

The primary importance of establishing SSL certificates is to start a secure session between the web server and the browser. Once a secure connection is established, then all the information passed between the web server and the visitor will be kept private and encrypted.

Other SSL advantages

1) Improve customer's trust

In the URL, this small customer assures the customer that their information will not be compromised. The data will be sent to the desired target server, and it will not be redirected to the unauthorized third party. Prior to receiving SSL certificates, CA will validate authenticity because it only distributes SSL certificates to real companies and businesses.

2) Protects information against phishing attacks

Phishing sites are fraudulent copies of famous websites, whose purpose is to deceive you into making valuable information such as your credit card or bank details.

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Phishing sites often have similar forms and visions of the original site, but the website's address is different and it is usually not secure with SSL certificates.

For example, PayPal.com is a popular target for these fake, copy-cat phishing sites. Extended validation certificates prevent you from phishing attacks by displaying the full business name of the owner of the website in the address bar. Phishing site operators can not get EV certificates due to extensive verification requirements.

3) Better search engine ranking

HTTPS is now considered one of the world's largest search engines, as a ranking signal by Google. If you are optimizing, you should consider getting SSL certificates to help increase your ranking, especially for e-commerce sites.

Disadvantages of SSL

With so many advantages, why would not anyone use SSL? Are there any disadvantages of using SSL certificates? Cost is a clear loss. SSL providers need to establish a reliable infrastructure and validate your identity, so this includes a cost. However, the growing competition in this industry and the introduction of providers like Let's Encrypt have made it very slow.

There is one more disadvantage with performance SSL. Because the information you send is encrypted by the server if the information is not encrypted it takes more resources than the server. The difference in performance for web sites with a large number of visitors is only noticeable and in such cases, it can be reduced with special hardware.

Overall, the disadvantages of using SSL are very low and the advantages are very high. It is important that you use SSL properly on all websites. Proper utilization of SSL certificates will help protect your customers, help protect you, and help you gain more trust from your customers and sell more.

How SSL certificates work

How-SSL-certificates-work

The following is the step-by-step framework of the SSL connection process:

A user requests the web address that starts with https: // using their internet browser. The browser requests that the server itself identify it.


The server replies by sending a copy of its SSL certificates, which contains its public key.


The browser checks for the certificates root to know whether it relates to a trusted CA. It also checks whether the SSL certificate has been uninstalled or not. In addition, it checks if its common name is valid for the website.


Once the browser confirms that it can rely on the website, it creates encrypts and sends a symmetric session key back using the server's public key.


Now, the server decrypts the symmetric session key using its own private key.


In return, the server sends acknowledgment encryption with the session key to start the encrypted session.

Now, all data transmitting between server and browser is encrypted.

Who issues SSL certificates?

SSL certificates are issued by a Certificate Authority (CA), along with other digital certificates. They confirm the identity and ownership of a business or company applying for the certificate. These issued certificates are chains of a trusted root certificate owned by your selected CA. Trusted Root Certificates are embedded in a "Certificates Store" in popular web browsers such as Firefox, Chrome, Internet Explorer and Safari.

Whenever you visit a website that uses SSL certificates, your browser checks that it is signed by one of the trusted roots in its store. If it is not, it will warn you that the connection is not secure. Each person who visits your site error messages will also appear. This is why we recommend buying only SSL certificates from a trusted CA.

How do I implement SSL on my site?

Setting up SSL on your website is easy! In general, these are 3 simple steps for installing your new SSL certificates.

1) Certificate purchase issued by a reliable CA

Trusted certificates can be purchased from your web-host or purchased directly from other reliable CAs. Certificates from a trusted CA will be accredited by all popular internet browsers used by your visitors (Chrome, Firefox, Internet Explorer, Safari, etc).

2) Activate and install certificates

If you have purchased your certificates from your web-host then they can take this step for you. If you are manually managing the site, then you need to complete the two steps, one of them is a certificate signing request (CSR) and then install your certificates.

3) Change your entire site to HTTPS

After installing your certificates on your target pages, modify your site so that all content can be safely served. Internet is rapidly moving towards a default HTTPS for every page, and if a website is served more than HTTPS, Google is also offering better search rankings to websites.

What are SSL types?

Due to the different demands of websites around the world, SSL certificates are in a variety of different types. The main validation level is the Extended Validation Certificates (EV) and Domain Validated Certificates (DV).

Each type of user has different levels of confidence. Let's talk about these levels of user-

1) Extended Validation Certificates

EV certificates provide the highest level of security, trust and customer conversion for online business enterprises. Only after issuing the EV certificate, the company gets strict background checks on the company as per the guidelines set by the Certificate Authority / Browser (CA / B) Forum. Because of this, there is a unique differential in the EV certificate, which is clearly designed to clarify the reliability of the website for its visitors.

Whenever a website visits an EV certificate, the address bar will become green in major browsers like Internet Explorer, Firefox and Chrome. EV certificates are used by all major online retailers and banks and are highly recommended for businesses that want to instantly create customer trust in their site.

2) Domain Validated Certificates

DV certificates provide high data encryption similar to EV and OV but do not provide assurance about the identity of business behind the website. While the EV and OV certificates are issued manually by the Certificate Authority, the application is released only after the application is issued, DV certificates are issued after the domain controller is installed using an automated, online process. DV certificates are a popular option among small and medium-sized web sites because they are released faster and the cost is less.