SSLTLSprotokolla

SSLTLSprotokolla refers to the collective set of protocols used for securing communication over a computer network, primarily the internet. SSL, or Secure Sockets Layer, was the predecessor to TLS, or Transport Layer Security. While the term SSL is still commonly used, modern secure connections almost exclusively utilize TLS. The primary function of these protocols is to provide authentication, confidentiality, and integrity to data transmitted between two communicating applications, most notably between a web browser and a web server.

Authentication ensures that the client is communicating with the intended server and not an imposter. This is typically achieved through digital certificates. Confidentiality means that the data exchanged is encrypted, making it unreadable to anyone who might intercept it. Integrity guarantees that the data has not been tampered with during transmission.

TLS operates at the transport layer, sitting between the application layer (like HTTP) and the network layer (like TCP). The handshake process is a crucial part of TLS/SSL. During the handshake, the client and server negotiate the encryption algorithms, exchange cryptographic keys, and authenticate each other. Once the handshake is complete, a secure tunnel is established, and subsequent application data is encrypted and decrypted within this tunnel. The widespread adoption of SSL/TLS has made secure online transactions, browsing, and communication commonplace.