name: TEK
full_form: Traffic Encryption Key
context: The key used to protect the MIME entity is transferred in the RecipientInfo field of AuthEnvelopedData. This field can have several different formats and one that is particularly suited to be used together with MIKEY-TICKET is OtherRecipientInfo. This type has the following ASN.1 definition: OtherRecipientInfo ::= SEQUENCE { oriType OBJECT IDENTIFIER, oriValue ANY DEFINED BY oriType } A new oriType with an oriValue of type OCTET STRING is defined for MIKEY-TICKET: id-ori-mikey OBJECT IDENTIFIER ::= { x y z } The value field contains a TRANSFER_INIT message with a single Crypto Session of type PSK/MIME. The TEK associated with the CS is the key used as input to the authenticated encryption algorithm. Contrary to what is usually done, the TEK is not derived from a TGK/GTGK carried in the TICKET. Instead the TEK is carried inside a KEMAC payload that the sender adds to the TRANSFER_INIT message. The advantage of transporting the TEK instead of deriving is that it can be generated
description: The Traffic Encryption Key (TEK) is a critical network attribute used as input to the authenticated encryption algorithm for protecting MIME entities in MIKEY-TICKET. It is carried inside a KEMAC payload within the TRANSFER_INIT message and serves as the key for encrypting and decrypting data.
explanation: The context explicitly mentions TEK as a key used for protection, highlighting its role as a critical network attribute. The fact that it's carried in a specific payload and used for encryption justifies its classification as a Parameter.
section_title: B.3		Using MIKEY-TICKET to transfer the protection key
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