SSL Certificates

SSL Certificates

What is an SSL Certificate?

SSL Certificates are small data files that digitally bind a cryptographic key to an organization’s details. When SSL Certificates installed, it activates the padlock and the https protocol and allows secure connections from a web server to a browser.

SSL certificates have a key pair: a public and a private key. These keys work together to establish an encrypted connection. 

Why do we need SSL Certificates?

The Purpose of using SSL CertificatesSSL is the backbone of our secure Internet and it protects your sensitive information as it travels across the world’s computer networks. SSL is essential for protecting your website, even if it doesn’t handle sensitive information like credit cards.

Is SSL Certificates Free?

Free SSL cert only comes with a Domain Validation (DV) option. DV certificates are used only for providing a basic level of authentication.

Free SSL cert doesn’t have the provision for Organization Validation (OV) and Extended Validation (EV) certificates.

How does SSL cert works?

  • The browser connects to a web server secured with SSL (https).
  • The server shares a copy of its SSL Certificate, including the server’s public key.
  • The browser checks the certificate root against a list of trusted CAs(Certificate Authority) and that the certificate is not expired, unrevoked, and that its common name is valid for the website. If the browser trusts the certificate, it creates, encrypts, and sends back a symmetric session key using the server’s public key.  
  • The server decrypts the symmetric session key using its private key and sends back an acknowledgment encrypted with the session key to start the encrypted session.  
  • Server and Browser now encrypt all transmitted data with the session key.

How To Order An SSL Cert

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  1. Make your server set up and getting your WHOIS record updated (it needs to show the correct company name and address), etc.
  2. Generate the CSR on the server.
  3. The next step is to submit the CSR and other information to the Certificate Authority.
  4. Get your domain and company validated
  5. Install the issued certificate.

Types of SSL Certificates

  • Extended Validation Certificates (EV SSL)
  • Organization Validated Certificates (OV SSL)
  • Domain Validated Cert (DV SSL)
  • Wildcard SSL Certificate.

About Sachin Tiwari 81 Articles
I am a software engineer, and have an interest in web security or cybersecurity, love to learn in website security topic and sharing with others

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