ACR38 Reference Manual
version 1.9 February 2006
Response data format
Header
Status
Data length
SW1
SW2
LEN
01
H
SW1, SW2
= 90
H
00
H
if no error
8.2.8.5 AUTHENTICATE_MEMORY_CARD (SLE4436 and SLE5536 only)
To read a card authentication certificate from a SLE5536 card. The following actions are executed by the
ACR38:
o
select Key 1 or Key 2 in the card as specified in the command
o
present the challenge data specified in the command to the card
o
generate the specified number of CLK pulses for each bit of authentication data computed by
the card
o
read 16 bits of authentication data from the card
o
reset the card to normal operation mode
The ACR38 returns the 16 bits of authentication data calculated by the card in the response.
Command format
Header
Instruction
Data length
Data
LEN
CLA
INS
P1
P2
MEM_L
CODE
MSB
LSB
KEY
CLK_CNT
Byte1
Byte 2
……
Byte 5
Byte 6
01
H
A0
H
00
H
08
H
FF
H
84
H
00
H
00
H
08
H
KEY
Key to be used for the computation of the authentication certificate:
00
H
: key 1 with no cipher block chaining
01
H
: key 2 with no cipher block chaining
80
H
: key 1 with cipher block chaining (SLE5536 only)
81
H
: key 2 with cipher block chaining (SLE5536 only)
CLK_CNT
Number of CLK pulses to be supplied to the card for the computation of each bit of the
authentication certificate.
BYTE 1...6
Card challenge data
Response data format
Header
Status
Data length
CERT
SW1
SW2
LEN
01
H
CERT
16 bits of authentication data computed by the card. The LSB of BYTE 1 is the first
authentication bit read from the card.
SW1, SW2
= 90
H
00
H
if no error
Advanced Card Systems Ltd.
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