ACS ACR83 PINeasy Smart Card Reader User Manual
Page 35
ACR83 – Reference Manual
Version 1.05
www.acs.com.hk
Page 35 of 49
Show “Enter PIN:” means enter the old/current PIN and
Show “Enter New PIN”
•
Point 1: Lc (12h) equal to SpeOffsetNew (0Ah) + SpePINLen (8)
•
Point 2: SpeOffsetNew (0Ah) >= SpeOffsetOld (1) + SpePINLen (8)
•
Point 3: SpePINPos (8 bits) >= SpePinLenPos (4 bits) + SpePINSize (4 bits)
•
Point 4: SpePINLen (8) – SpePinPos (4 bits) >=[SpePinMax (0Ah) * 4bits(BCD)] = 5 bytes
: 7.5 bytes >=5 bytes
•
Point 5: SpePinMax (0Ah) > SpePinMin (01h)
•
Point 6: SpePinMax (0Ah) < =10h
•
Point 7: SpePinMin (01h) > = 01h
Command Header
OffsetOld
SpePINLen
APDU
Header
APDU
Lc
OffsetOld
Offset SpePINPos 8 bits = 1byte
Old
PIN
00 24 00 01
12
Offset
Offset (4 bits)
SpePINSize (4 bits)
Not
used
field
Old
PIN
00 24 00 01
12
1 byte
02
Input 6 digits
-
Old
PIN
00 24 00 01
12
08
0000
=
0000
0010
0110
(bits)
-
Old
PIN
00 24 00 01
12
08
0000
0110
(
0110
replace original
0000
0010
)
-
Old
PIN
First, handle the old PIN.
Old PIN (Byte)
Original
00 24 00 01 12 08 02
30 30 30 30 30 30 30
09 03 30 30 30 30
30 30 30
Input
12 34 56
Result PIN
00 24 00 01 12 08 0
6
12 34 56
30 30 30 30 09 03 30 30 30 30
30 30 30
OffsetNew
SpePINLen
OffsetNew
Offset SpePINPos 8 bits = 1byte
New PIN
Offset
Offset (4 bits)
SpePINSize (4 bits)
Not used
field
New PIN
0A bytes
03
Input 10 digits
-
New PIN
relative to Lc
00
=
0000
0011
1010
(bits)
-
New PIN
09
0000
1010
(
1010
replace original 0000
0011
)
-
New PIN