ISO 7816 part 4, section..1 2 3 4 5 6 7 8 9 annex.. A B C D E F
For the latest version of ISO7816 part 4, please contact ISO in Switzerland.
Annex F.1 Abbreviations
Annex F.2 Use of cryptographic checksums
Annex F.3 Use of cryptograms
Annex F.4 Use of control references
Annex F.5 Use of response descriptor
Annex F.6 Use of the ENVELOPE command
For the purpose of this annex, the following abbreviations apply
| CC | Cryptographic checksum |
| CG | Cryptogram |
| CH | Command header (CLA INS P1 P2) |
| CR | Control reference |
| FR | File reference |
| KR | Key reference |
| L | Length |
| PB | Padding bytes (’80’ followed by 0 to k-1 times ’00’ where k is the block length) |
| PI | Padding indicator byte |
| PV | Plain value |
| RD | Response descriptor |
| T | Tag |
| || | Concatenation |
For all the examples, CLA indicates the use of secure messaging by an appropriate value (‘0X’, ‘8X’, ‘9X’ or ‘AX’) where bit b4 of CLA is set to 1 (see table 9).
The use of cryptographic checksums (see 5.6.3.1) is shown for the four cases defined in table 4 and figure 4 .
Data covered by CC (b3=1 in CLA) = First and only data block = CH||PB
The command of case 1 is transformed into a command of case 3.
Data covered by CC (b3=1 in CLA) = First and only data block = CH||PB
Response data field = Tpv (b1=1)||Lpv||PV||Tcc||Lcc||CC
Data covered by CC = Data blocks = Tpv (b1=1)||Lpv||PV||PB
Data covered by CC (b3=0 in CLA) = Data blocks = Tpv (b1=1)||Lpv||PV||PB
Data covered by CC (b3=1 in CLA) = Data blocks = CH||PB||Tpv (b1=1)||Lpv2||PV2||PB
Data covered by CC (b3=0 in CLA) = Data blocks = Tpv (b1=1)||Lpv||PV||PB
Response data field = Tpv (b1=1)||Lpv||PV||Tcc||Lcc||CC
Data covered by CC = Data blocks = Tpv (b1=1)||Lpv||PV||PB
The use of cryptograms (see 5.6.4) is shown with and without padding.
Data carried by CG = Data blocks = Non BER-TLV coded data band padding bytes, if indicated in PI.
The use of control references (see 5.6.5.1 ) is shown.
Command data field = Tcr||Lcr||CR
Where CR = Tfr||Lfr||Tkr||Lkr||KR
The use of response descriptor (see 5.6.5.1 ) is shown.
Command data field = Trd||Lrd||RD
Where RD = Tpv||’0C’||Tcc||’00’
Response data field = Tpv||Lpv||PV||Tcc||Lcc||CC
The use of the ENVELOPE command is shown.
Commad data field = Tcg||Lcg||PI||CG
Data carried by CG = Command APDU starting by CH and padding bytes according to PI
Response data field = Tcg||Lcg||PI||CG
Data carried by CG = Response APDU and padding bytes according to PI