ATMKeyDwnldRspn
                Mandatory
                Hdr
                Mandatory
                PrtctdATMKeyDwnldRspn
                Optional
                ATMKeyDwnldRspn
                Optional
                SctyTrlr
                Optional
                CnttTp
                Mandatory
                AuthntcdData
                Optional
                SgndData
                Optional
                Vrsn
                Optional
                DgstAlgo
                Repetition (1..n)
                NcpsltdCntt
                Mandatory
                Cert
                Repetition (0..n)
                Sgnr
                Repetition (1..n)
                Vrsn
                Optional
                SgnrId
                Optional
                IssrAndSrlNb
                Choice
                KeyIdr
                Choice
                KeyId
                Mandatory
                KeyVrsn
                Mandatory
                Sequence Number
SeqNb
                Optional
                Definition: Number of usages of the cryptographic key.
Type: Number (Decimal)
Restrictions:
- FractionDigits: 0
- TotalDigits: 18
DerivtnId
                Optional
                DgstAlgo
                Mandatory
                SgntrAlgo
                Mandatory
                Sgntr
                Mandatory