User guide

ACR83 – Reference Manual [e-mail]
Version 1.05
www.acs.com.hk
Page 28 of 49
wPINMaxExtraDigit=010Ah
SpePinMax=0Ah
SpePinMin=0Ah
bInsertionOffsetNew(SpeOffsetNew)=01h
SpeOffsetNew =1 byte
bNumberMessage=01h
Show “Enter New PIN:”
If bNumberMessage=00h
No message will be shown, but user needs to input the PIN.
New PIN Input = 1 2 3 4 5 6 7 8 0
• Point 1: Lc (0A) equal to SpePINLen (09) + SpeOffsetNew (01h)
• Point 2: SpePINPos (7 bits) >= SpePinLenPos (2 bits) + SpePINSize (4 bits)
• Point 3: SpePINLen (9) – SpePinPos (7 bits)[act as 1 byte] >=[SpePinMax (0Ah) *
4bits(BCD)] = 5 bytes
: 8 bytes >=5 bytes
• Point 4: SpePinMax (0Ah) > SpePinMin (01h)
• Point 5: SpePinMax (0Ah) < =10h
• Point 6: SpePinMin (01h) >= 01h
Command Header
OffsetNew SpePINLen
APDU Header
APDU
Lc
OffsetNew
Offset SpePINPos 7 bits PIN
00 24 00 01 09 Offset Offset (2 bits)
SpePINSize (4
bits)
Not used field/Does not
exist
PIN
00 24 00 01 09 1 byte 01 Input 9 digits
Offset 6 bit relative to
Lc
PIN
00 24 00 01 09 20 01=0101011 1001 (bits) 1 (bit)=0101011 PIN
00 24 00 01 09 20 0110011 (1001 replace original 0101011) PIN
How about the PIN management?
Because it is Left and BCD arrangement.
PIN (bits)
Original
1 0011 0000 0011 0000 0011 0000 0011 0000 0011 0000
0011 0000 0011 0000 1100 0000
Input 12 34 56 78 0
(change to bit format)
0001 0010 0011 0100 0101 0110 0111 1000 0000