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home / developersection / forums / what is ssl certificate?
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Nishi Tiwari
Nishi Tiwari

Student

I am a currently pursuing Bca from United Institute of Management. Want to become software developer.

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PhDiZone
PhDiZone 12 Jan 2020
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The Secure Socket Layer (SSL) protocol was created by Netscape to ensure secure transactions between web servers and browsers. The protocol uses a third party, a Certificate Authority (CA), to identify one end or both end of the transactions. This is in short how it works.

Now, let's take brief view on what are SSL certificates?

  • A browser requests a secure page (usually https://).
  • The web server sends its public key with its certificate.
  • The browser checks that the certificate was issued by a trusted party (usually a trusted root CA), that the certificate is still valid and that the certificate is related to the site contacted.
  • The browser then uses the public key, to encrypt a random symmetric encryption key and sends it to the server with the encrypted URL required as well as other encrypted http data.
  • The web server decrypts the symmetric encryption key using its private key and uses the symmetric key to decrypt the URL and http data.
  • The web server sends back the requested html document and http data encrypted with the symmetric key.
  • The browser decrypts the http data and html document using the symmetric key and displays the information.

If you want to more about SSL certificate then visit official source of SSL certificate discovery in 1993.

Nishi Tiwari
Nishi Tiwari 09 Jan 2020
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SSL Certificates can be defined as small data files that are digitally bind a cryptographic key to an organization’s details. When we it installed on a web server, it activates the padlock and the https protocol and also allows a secure connections from a web server to a browser. SSL is used to secure credit card transactions, data transfer and logins, and more recently it is becoming the norm when securing browsing of social media sites.

SSL Certificates can be bind together by two ways:

• A domain name, hostname or server name.

• An organizational identity (i.e. company name) and location.

An organization must needs to install the SSL Certificate onto its web server in order to initiate a secure session with browsers. Once a secure connection will be established, all the web traffic between the web server and the web browser will also be secure.

When a certificate is successfully installed on our server, the application protocol (known as HTTP) will change to HTTPs, where the ‘S’ stands for ‘secure’. Depending on the type of certificate we purchase and what browser we are surfing the internet on, a browser will show a padlock or green bar in the browser when we visit a website that has an SSL Certificate installed.

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