Inside Secure ACCESSO Manual Do Utilizador
Chips and readers- USER’S GUIDE
UG 24
Version 1.0
Example:
The checksum when sending the default Debit Key K
The checksum when sending the default Debit Key K
d
is :
Command =
80 D8 00 01 0C 00 00 00
K
d
p =
FF 0F 33 55 00 F0 CC 55
RES =
7F D7 33 54 0C F0 CC 55
CHK =
73 27 FF 01
MSB(RES) 7F
D7
33
54
⊕
LSB(RES)
0C
F0
CC
55
________________________________
CHK =
73
27
FF
01