VeriFone MX800 series Programmer's Manual page 302

IPP MS DUKPT C
AND OMMUNICATIONS
Common Packets
Packet 17 Length:
302
M X 800 S P
ERIES ROGRAMMERS
P
ACKETS
Table 44 Packet 17 Format (Continued)
Data Elements
DUKPT Engine 1/2
Mode Flag [DEMF]
This field
Note:
was added
for IPP8
emulation.
<SO>
{LRC}
•
MAX: 8 characters
•
MIN: 8 characters
G
UIDE
Characteristics Comments
Bit 7
0
1
1AH The one ASCII-Hex digit is used
produce half of a control byte.
Bit 0
0
1
Bit 1
0
1
Bit 2 ~ 3
----------
Reserved
Example
Engine=
DEMF = 0x30
1H Shift Out, value: 0Eh
1H Error Check
Description
MAC empty working key
support off (default)
MAC empty working key
support on
( DUKPT Engine "1")
Description
1DES DUKPT - Default
3DES DUPKT
( DUKPT Engine "2")
Description
1DES DUKPT - Default
3DES DUPKT
1 2
0 1DES 1DES
0x31 1 3DES 1DES
0x32 2 1DES 3DES
0x33 3 3DES 3DES