SSL stands for Secure Sockets Layer. It is a protocol for establishing secure connections between web servers and clients, such as web browsers. SSL was first developed by Netscape in the 1990s and was later replaced by its successor, TLS (Transport Layer Security).
The main purpose of SSL is to encrypt the data that is transmitted between a web server and a client to ensure that it cannot be intercepted and read by an unauthorized third party. It uses a combination of public key encryption and symmetric key encryption to secure the data.
When a client, such as a web browser, connects to a web server using SSL, the server will present the client with a digital certificate, which acts as proof that the server is who it claims to be. The client will then verify the certificate and, if it is valid, will establish an SSL connection.
Once an SSL connection is established, all data transmitted between the server and the client will be encrypted. This ensures that any sensitive information, such as login credentials and personal data, cannot be intercepted and read by an unauthorized third party.
In order for a website to use SSL, it must have an SSL certificate. These certificates are issued by trusted third-party organizations called certificate authorities (CA). There are different types of SSL certificates, such as domain-validated (DV) certificates and organization-validated (OV) certificates.
The use of SSL is indicated by the “https” in the URL of a website, as opposed to “http” for non-secure websites. The padlock icon in the browser address bar also indicates that a website is using SSL.
In summary, SSL stands for Secure Sockets Layer, it is a protocol for establishing secure connections between web servers and clients, such as web browsers, it encrypts the data that is transmitted between a web server and a client to ensure that it cannot be intercepted and read by an unauthorized third party, it uses a combination of public key encryption and symmetric key encryption to secure the data, it requires SSL certificate issued by trusted third-party organizations called certificate authorities (CA), it is indicated by the “https” in the URL of a website, as opposed to “http” for non-secure websites, and the padlock icon in the browser address bar also indicates that a website is using SSL.