What is SSL and How does it work
If you want your website or blog to be safe and you are looking for a technique for this, then this article is going to be very important for you. In this article, we are going to tell you what is SSL and How does it work and what is the benefit of using it and why is it necessary for the website to buy it?
After getting complete information about SSL, you will be able to understand how to secure an internet connection as well as how you can keep your website secure.
What is SSL?
SSL has a full form Secure Socket Layer. SSL is a technology used to secure an internet connection.
One of the most important components of online business is creating a trusted environment where potential customers feel confident in making purchases. SSL certificates create a foundation of trust by establishing a secure connection. To assure visitors their connection is secure, browsers provide special visual cues that we call EV indicators — anything from a green padlock to branded URL bar.
SSL certificates have a key pair: a public and a private key. These keys work together to establish an encrypted connection. The certificate also contains what is called the “subject,” which is the identity of the certificate/website owner.
To get a certificate, you must create a Certificate Signing Request (CSR) on your server. This process creates a private key and public key on your server. The CSR data file that you send to the SSL Certificate issuer (called a Certificate Authority or CA) contains the public key. The CA uses the CSR data file to create a data structure to match your private key without compromising the key itself. The CA never sees the private key.
Once you receive the SSL certificate, you install it on your server. You also install an intermediate certificate that establishes the credibility of your SSL Certificate by tying it to your CA’s root certificate. The instructions for installing and testing your certificate will be different depending on your server.
In other words:
SSL is a technique used to establish an encrypted connection between two systems. It is a two-system web server (host) and web browser (client) or web server and the webserver.
The data transfer between two systems connected to the Internet is in an encrypted form. In such a situation, if a person (hacker) intercepts the record in the middle of the data transfer and even sees the data, then there is no harm because the data is in a form that he cannot understand.
If you have visited a website that starts at the address bar from https: // then you have made a secure connection using SSL.
SSL Certificates – Validation Level
- Domain Validation
- Organisation validation
- Extended validation
- Domain validation
It is a basic certificate that only secures communication between server and browser. This type of certificate is used for initial level websites and businesses.
Suitable for people who have a legitimate business, whose website collects sensitive information from their users. Visually, both the domain validated organization validated certificates look the same when anyone clicks on the start padlock and then goes to the detail to show that the organization is a validated certificate.
Of all the certificates, Extended Validation Certificates are the most reliable. This certificate is very expensive and it takes some time to get it too. If the payment details or address information on the website is entered by the user, then the standard validation SSL certificate is the best for such website.
After installing and activating this certificate for the website, the company name also appears with a green lock pad before the address of the site in the browser’s address bar.
Types of SSL certificates – based on the number of domains to protect
- Single domain
- Single domain
Single Domain certificate
As the name sounds like, this SSL certificate protects a single domain. No other variations of the domain are covered. The certificate is a perfect bet for simple content based websites. If you own a normal B2B site, or an e-commerce website where all transactions occur on a single domain, single domain SSL will offer you complete security.
Wild card ssl certificate
Wildcard SSL certificates offer comprehensive coverage against security and privacy threats to all your subdomains on a single root domain or host name. This scenario would be pretty useful for websites with heavy transactional requirements.
If you take a wildcard certificate for one of your websites, such as www.abc.com, you can submit all subdomain of your site (such as demo.abc.com, tools.abc.com, blog.abc.com and hi.abc .com, etc.).
Multi-domain SSL Certificate
Multi-domain SSL certificates, also referred to as “SAN” (for Subject Alternative Names) cover similar domains. One multi-domain SSL certificate covers an entire suite of sites. So they provide flexibility for covering sites that might go away or not yet exist. A domain registrar and their certificate of authority put capping on the number of sites included under this SSL.
How does SSL work?
SSL secures the connection between two systems connected to the Internet under one process. SSL certificates work using two keys: One- Private Keys and Two- public keys. The public keys are meant to encrypt a connection, while the private keys decrypt or unlock it. These private and public keys provide an extra layer of privacy between your data and the rest of the world. They make your messages safe from hacking or other threats. SSL certificates are unarguably the best way to keep data secure and hacking proof.
- First of all the web server sends its SSL certificate to the browser or server
- The browser checks whether the SSL certificate is correct. Sends a message to the web server if true.
- The web server sends a digitally signed agreement to the browser after receiving the message. After which a secure session starts with an SSL.
- Now data is shared between web server and browser or server in encrypted form.
Advantages of using SSL Certificate.
- Protects internal data of customer and site
- Use HTTPS in the site
- Also benefit from google ranking
- Encrypts communication between browser to server or server to server
- Provides security to web applications and mobiles
- SSL improves customer confidence
How to know if the website has SSL?
By looking at the address bar or bottom status bar of the browser, I can easily find out that the site has been secured using SSL certificate.
There is another way
Open a website in the browser. Look at the URL of the website. If it starts with HTTPS instead of HTTP, then the SSL certificate on the side is protected.
HTTP + SSL = HTTPS (here S means Secure)
Note: When creating a new website the address of the website always starts with HTTP when the SSL certificate is used, always starts with HTTPS.
- On using SSL: https://website.com
- Not using SSL: http://website.com
Which SSL Certificate should I get?
Always buy an SSL certificate knowing your need. Before taking a certificate, ask yourself some questions, so that you will know what kind of certificate you should take.
How many domains do you want to protect?
What kind of website do you want to secure?
Payment information is submitted on the website
When you understand your need, look at your budget and choose the certificate on that basis.
How to choose SSL Certificate Providers?
There are some factors based on which SSL certificate providers can now choose. Before selecting SSL certificate authority or reseller, make sure to compare the given factor
- Encryption algorithm and key length
- License Single or Unlimited
- Money back guarantee
And so on
How to get SSL Certificate for website?
You can obtain an SSL certificate for your website from any of the trusted certificate authorities (CAs) or from a Certificate Authority Authorized Reseller. You have to pay 1 year to get SSL certificate from any certificate authority or reseller. After this, every year SSL certificate has to be renewed for which you have to pay.
In today’s time, the certificate is famous and not believed and the following is a little Comodo, AlphaSSL, Symantec, and RapidSSL.
Where to buy SSL Certificate?
Today almost all hosting companies are offering free SSL, that is, if you buy hosting to create a website or blog, then you are giving free Encrypt SSL certificate for free. If your hosting company provides free SSL, then there is no need to buy a separate SSL certificate, you can use it in all your websites right now.
If the company from which your hosting is taken is not providing SSL for free or does it then you will have to buy the SSL certificate from any certificate authority or reseller of the certificate authority.
SSL is much more expensive than a certificate authority, so you can save some money by buying a certificate from a reseller as the reseller takes a little less money than the certificate.
Some of the best resellers to get SSL certificate are as follows.
How to Install SSL Certificate?
To install SSL certificate you have to follow some steps which are as follows
- First buy SSL certificate
- Activate certificate
- Install the certificate after activating
- Now update your website to use HTTPS.
- Now the SSL certificate will be fully installed on your site.
The most important part of an SSL certificate is that it is digitally signed by a trusted CA, like DigiCert. Anyone can create a certificate, but browsers only trust certificates that come from an organization on their list of trusted CAs. Browsers come with a pre-installed list of trusted CAs, known as the Trusted Root CA store. In order to be added to the Trusted Root CA store and thus become a Certificate Authority, a company must comply with and be audited against security and authentication standards established by the browsers.
An SSL Certificate issued by a CA to an organization and its domain/website verifies that a trusted third party has authenticated that organization’s identity. Since the browser trusts the CA, the browser now trusts that organization’s identity too. The browser lets the user know that the website is secure, and the user can feel safe browsing the site and even entering their confidential information.