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Chips and readers- USER’S GUIDE

UG 14

Version 1.0

HOW TO SET A KEY AS THE ACTIVE ONE

A - Before SelectCard command

! ActiveX component : Mx.CurrentKey

Possible values are :

- mpkP

Kd (i=0 to 7)

- mpkP

Kc(i=0 to 7)

! C Library : Clib_w_SelectCurrentKey

Clib_w_SelectCurrentKey (KeyNum)

! Low level : SELECT_CURRENT_KEY command

Host

80h 52h 00h P2h 08h 8 * 00h

Coupler

52h 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

B - Before SelectPage and Authentify command

At this stage you need to precise both the key number and the chip serial number (as

you may be working with several chips).

Actually this operation is performed automatically by the selectCard command as it

knows the key number thanks to the CurrentKey property, and the Serial Number is

given by the chip during the selection phase.

When using a standard coupler, the DiversifyKey command returns a useless data

(random number). The returned data are used only with a personalisation coupler. More

information are given in the personalisation kit.

! ActiveX component : Mx.DiversifyKey

Mx.DiversifyKey (KeyNum, Chip Serial Number, Databack)

! C Library : Clib_w_DiversifyKey

Clib_w_DiversifyKey (KeyNum, Chip Serial Number, Databack)

! Low level : DIVERSIFY_KEY command

Host

80h 52h 00h P2h 08h

Serial

Number