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Secure Sockets Layer (SSL) was created by Netscape and it became an international standard for exchanging sensitive information on the internet. Basically, SSL is a security protocol that keeps the information secure between a website and a computer that are communicating. The computer that communicates with a website is the client.
The SSL protocol is integrated in almost every popular browser and this technology automatically engages whenever any computer connects with an SSL-enabled server. When a server uses SSL security protocol then its URL begins with https rather than http.
Whenever any browser connects to a server that is SSL-enabled, the browser asks for a digital certificate from the server i.e. the Certificate of Authority (CA). This certificate ensures the security of your sensitive data by authenticating the identity of the server. The internet browser also makes sure that the domain name of any website matches with the name on CA and the CA has been generated by an authentic source via a valid digital signature. All of this happen in a matter of seconds and you don’t even realize it all happened if the process has no glitch.
If the browser faces any issue with CA, it will show you a pop up window telling you the exact problem that has been encountered. Then it will give you two options, either end the session or continue at your own risk.
However, if the process runs smoothly, the browser with start to encrypt all of the information that is being sent to the website. When the information is received by the server, then the server decrypts the received information using a secret key. The information sent by the server to your computer is also encrypted and the browser decrypts it when the information is received. You see the website normally, but at the backend, this whole process takes place.
It is also possible to authenticate the clients for all those users who are running secure servers. Additionally, SSL also authenticates data so that any interceder would not substitute another transmission for actual information without being detected.
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