What is an SSL certificate


What is an SSL certificate

Full form of SSL is Secure Sockets Layer. SSL provides a secure channel between two machines or devices operating over the internet or an internal network

This turns a website's address from HTTP to HTTPS, the ‘S’ standing for ‘secure’.An SSL (Secure Sockets Layer) certificate is a digital certificate that authenticates the identity of a website and encrypts information sent to the server using SSL technology. SSL is used for is protecting a customer during an online transaction. To establish a secured SSL connection on a web server it requires an SSL Certificate to be properly installed. Once properly completed, your web server will create 2 types of cryptographic keys – one is called a Private Key and the other is called the Public Key

An SSL certificate contains the following information:
  • The certificate holder's name
  • The certificate's serial number and expiration date
  • A copy of the certificate holder's public key
  • The digital signature of the certificate-issuing authority

Generally speaking, SSL Certificates include and display (at least one or all) your domain name, your company name, your address, your city, your state and your country

SSL Provides Trust

Web browsers give visual cues, such as a lock icon or a green bar, to make sure visitors know when their connection is secured. HTTPS also protects against phishing attacks. A phishing email is an email sent by a criminal who tries to impersonate your website

Are All SSL Certificates the Same?
The number of companies that use SSL have increased tremendously over the past few years and {also the} reasons that SSL is used has also increased, for example:
Some businesses would like SSL to easily give confidentiality (i.e. encryption)
Some businesses prefer to use SSL to feature a lot of trust or confidence in security and identity (they need you to know that they're a legitimate company and might prove it)

As the reasons companies use for SSL became wider, 3 differing kinds of SSL Certificates are established:

  1. Extended Validation (EV) SSL Certificates
  2. Organization Validation (OV) SSL Certificates
  3. Domain Validation (DV) SSL Certificates

Disadvantages of SSL 

Cost is an obvious disadvantage. Performance is another disadvantage to SSL. Because the information that you send has to be encrypted by the server, it takes more server resources than if the information weren’t encrypted. The performance difference is only noticeable for web sites with very large numbers of visitors and can be minimized with special hardware in such cases.
What is an SSL certificate What is an SSL certificate Reviewed by Info-maker on April 02, 2019 Rating: 5

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