What is a session key agreement key?

What is a session key agreement key?

A session key agreement key, also known as a key agreement key (KAK), is a cryptographic key used in secure communication protocols to establish a shared secret key between two or more parties. It is typically used in scenarios where secure communication needs to be established between entities that have not previously shared any secret information. The session key agreement key is used to securely negotiate and generate a session key, which is then used for encrypting and decrypting the actual data exchanged during the session.