TLSsesjoner

TLSsesjoner, also known as SSL/TLS sessions, refers to a period of secure communication between a client and a server using the Transport Layer Security (TLS) or its predecessor, Secure Sockets Layer (SSL) protocols. When a client and server establish a TLSsesjon, they first engage in a handshake process. This handshake involves the server presenting its digital certificate to the client for verification, negotiating encryption algorithms, and exchanging cryptographic keys. Once the handshake is successfully completed, the session is established, and all subsequent data exchanged between the client and server is encrypted and authenticated.

The primary purpose of a TLSsesjon is to ensure the confidentiality, integrity, and authenticity of data transmitted over a network. Confidentiality is achieved through encryption, preventing eavesdroppers from reading the data. Integrity is maintained by using message authentication codes, ensuring that data has not been tampered with during transit. Authenticity verifies the identity of the server, protecting users from connecting to malicious impostors.

TLSsesjoner can be stateful, meaning that after the initial handshake, subsequent connections within a certain timeframe can reuse the negotiated cryptographic parameters and session keys. This session resumption feature significantly reduces the overhead associated with establishing new TLS connections, leading to improved performance and reduced latency. However, TLSsesjoner have a limited lifespan and are eventually terminated.