Introduction to SSL Certificates?

SSL Certificates are tiny textual files that refer to source server and business details. A web server detects the presence of an SSL certificate to activate the https protocol. SSL does two jobs: authenticate and encrypt. authentication help is identifying if the other end is truly who is claiming to be and encryption ensures that the data is safe while in communication channels.

The certificate is a hash of the company/business name and domain name and is installed on the web servers that users are accessing.  It is an essential part of data security.

To check for certificate, look at the far left end of the browser address bar and right click on the green lock and click on Details.

SSL Certificates use public keys that are known to the server

This particular kind of cryptography harnesses the power of two keys which are long strings of randomly generated numbers. One is called a private key and one is called a public key.A public key is known to your server and available in the public domain. It can be used to encrypt any message. If Alice is sending a message to Bob she will lock it with Bob’s public key but the only way it can be decrypted is to unlock it with Bob’s private key. Bob is the only one who has his private key so Bob is the only one who can use this to unlock Alice’s message. If a hacker intercepts the message before Bob unlocks it, all they will get is a cryptographic code that they cannot break, even with the power of a computer.

If we look at this in terms of a website, the communication is happening between a website and a server. Your website and server are Alice and Bob.

Why Do I Need An SSL Certificate?

SSL Certificates protect your sensitive information such as credit card information, usernames, passwords etc. It also:

  • Keeps data secure between severs
  • Increases your Google Rankings
  • Builds/Enhances customer trust
  • Improves conversion rates


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