Definitions for "Session key"
A key generated by the authentication service or the ticket-granting service. A session key is generated to provide secure transactions between a client and a service. Its lifetime is limited to a single login session. See also key.
A cryptographic key intended to encrypt data for a limited period of time, typically between a pair of entities.
A session key is a symmetric key which encrypts a message or session, in order to protect data during transmission. It is created at the beginning of a communications session.
Keywords:  token, unique, identifies, user
a unique token that identifies the user