AuthstnRspn
                Mandatory
                Hdr
                Mandatory
                Body
                Mandatory
                Envt
                Mandatory
                Cntxt
                Optional
                Tx
                Mandatory
                AdddmData
                Optional
                PrcgRslt
                Mandatory
                ICCRltdData
                Optional
                PrtctdData
                Repetition (0..n)
                CnttTp
                Mandatory
                EnvlpdData
                Optional
                Vrsn
                Optional
                Rcpt
                Repetition (1..n)
                KeyTrnsprt
                Choice
                KEK
KEK
                Choice
                Definition: Key encryption key using previously distributed symmetric key.
Type: KEK6
Vrsn
                Optional
                KEKId
                Mandatory
                KeyNcrptnAlgo
                Mandatory
                NcrptdKey
                Optional
                KeyIdr
                Choice
                NcrptdCntt
                Optional
                NcrptdData
                Optional
                SplmtryData
                Repetition (0..n)
                SctyTrlr
                Optional