AET63 Reference Manual
version 1.8 September 2006
Advanced Card Systems Ltd.
Page 11 of 29
byte
1
2
3
4
5 ... N+4
(0<N<255)
N+5
Header
SW1
SW2
Data length = N
Data
Checksum
Header
01
H
to indicate the start of the normal response.
02
H
to indicate the start of an encrypted response (support from firmware 0.67 onwards,
only used in PTVerifySC
(*)
and PTVerifySCAll
(*)
)
SW1
Indicates the command execution status:
90
H
= command successfully executed
60
H
= error in command data; command cannot be executed
67
H
= error detected in command execution
FF
H
= status message initiated by the reader
SW2
Further qualification of the command execution status.
A table listing the possible values of the status bytes SW1 and SW2 and the corresponding
meaning is given in Appendix B.
Data Length
Number of subsequent data bytes (0 < N < 255)
Data
Data contents of the command.
For a
READ_DATA
command, for example, the data bytes would contain the contents of the
memory addresses read from the card. The data bytes can represent values read from the
card and/or status information.
Checksum
The checksum is computed by XORing all response bytes including header, status bytes,
data length and all data bytes.
Note (*) :
Please refer to “BioTRUSTKey API Manual.doc” for the descriptions of PTVerifySC and
PTVerifySCAll.
The following example shows the structure of the response to a command which has successfully been
executed and which returns three data bytes with the values 11
H
, 22
H
and 33
H
, respectively:
byte
1
2
3
4
5
6
7
8
01
H
90
H
00
H
03
H
11
H
22
H
33
H
92
H
