ACR1255U-J1 – Reference Manual
Version V1.01
www.acs.com.hk
Page 32 of 73
5.7.5.
RDR_to_SPH_AuthRsp2
This command is sent by ACR1255U-J1 in response to the SPH_to_RDR_AuthRsp.
Offset
Field
Size
Value
Description
Encrypted
0
bMessageType
1
83h
-
No
1
LEN1 LEN2
(wLength)
2
0015h
Number of extra bytes
in abRndNum field,
and is expressed in
two bytes long, and
LEN1 is MSB while
LEN2 is LSB;
No
3
Slot Number
1
00h
-
No
4
Sequence
1
00h
-
No
5
Parameter
1
00h
Slot Status
No
6
wCheckSum
1
-
No
20
abRndNum
21
E1 00 00 46 00
+ 16 bytes
random
number
abRndNum[0:15] – 16
bytes of random
number retrieved from
the data processing
server
All the 16-byte data
must be encrypted with
the Customer Master
Key that is currently
stored in ACR1255U-
J1
“E1 00 00 46 00” does
not need to be
encrypted.
Yes
