SSL stands for Secure Sockets Layer and, in short, it's the standard technology for keeping an internet connection secure and safeguarding any sensitive data that is being sent between two systems, preventing criminals from reading and modifying any information transferred, including potential personal details. The two systems can be a server and a client (for example, a shopping website and browser) or server to server (for example, an application with personally identifiable information or with payroll information).
It does this by making sure that any data transferred between users and sites, or between two systems remain impossible to read. It uses encryption algorithms to scramble data in transit, preventing hackers from reading it as it is sent over the connection. This information could be anything sensitive or personal which can include credit card numbers and other financial information, names, and addresses.
TLS (Transport Layer Security) is just an updated, more secure, version of SSL. We still refer to our security certificates as SSL because it is a more commonly used term, but when you are buying SSL from DigiCert you are buying the most up-to-date TLS certificates with the option of ECC, RSA, or DSA encryption.
Difference between Secure Socket Layer (SSL) and Transport Layer Security (TLS)
SSL stands for Secure Socket Layer while TLS stands for Transport Layer Security. Both Secure Socket Layer and Transport Layer Security are the protocols used to provide security between a web browser and web server.
The main difference between Secure Socket Layer and Transport Layer Security is that. In SSL (Secure Socket Layer), the Message digest is used to create a master secret and It provides the basic security services which are Authentication and confidentiality. while In TLS (Transport Layer Security), a Pseudo-random function is used to create a master secret.
There are some differences between SSL and TLS which are given below:
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