User Manual

Chips and readers- USER’S GUIDE
UG 13
Version 1.0
KEY LOADING
To perform this complex operation, use the function supplied with the libraries (C Libraries,
ActiveX component). You will find encryption algorithm in annex. C source code is provided
in the C libary, and ActiveX component manage automatically all security calculation.
You need to give the following parameter :
" Key number
" Exchange Key
" New Key value
! ActiveX method : Mx.KeyLoading
Use Mx.KeyLoading (KeyNum, LoadingType, ExchangeKey,NewValue) method to
load the key in the coupler at the appropriate place.
Keynum may have to following value :
- mpkP
i
Kd (i=0 to 7)
- mpkP
i
Kc (i=0 to 7)
Example : to load the default keys as keys 6 using the default exchange key ...
Mx.KeyLoading (mpkP
6
Kd, mklmXORKe,«$5C$BC$F1$DA$45$D5$FB$5F»,
«$F0$E1$D2$C3$B4$A5$96$87»)
Mx.KeyLoading (mpkP
6
Kc, mklmXORKe,«$5C$BC$F1$DA$45$D5$FB$5F»,
«$76$65$54$43$32$21$10$00»)
! C Library : Clib_w_KeyLoading
Clib_w_KeyLoading (KeyNum, LoadingType, ExchangeKey,NewValue)
! Low level : LOAD_KEY_FILE
Calculate the Encrypted key thanks to the C library algorythm (see annexe A) and use
the LOAD_KEY_FILE command...
Host
80h D8h 00h P2 OCh Encrypted key
Coupler
D8h 90h 00h
P2 : Key number
00h - Exchange Key Ke: used for key loading operation.
01h - Debit Key Kd0
02h - Credit Key Kc0
03h - Debit Key Kd1
04h - Credit Key Kc1
.....
0Fh - Debit Key Kd7
10h - Credit key Kc7
First step in
security is to load the
secret keys into the
coupler