VeriFone MX800 series Programmer's Manual page 301

Table 44 Packet 17 Format
Data Elements
<SI>
Packet Type
Key Management
Mode
[KMM]
IPP MS
Characteristics Comments
1H Shift In, value: 0Fh
2AN Value: 17
2AH The two ASCII hex digits are
concatenated big-endian, to produce a
single control byte. The key
management mode register (8 bits) in
IPP7 is as follows:
0
0
1
0
1
Bit 3
0
1
Bit 4
0
1
Bit 5
0
1
Bit 6
0
1
DUKPT C
AND OMMUNICATIONS
Bit
1 2 Description
0 0 1DES MS (default)
Mixed mode (1DES
0 0
and 3DES GISKE)
1 0 3DES GISKE MS
1 0 Secure messaging
(not supported in
Omni 33XX.
Description
1DES DUKPT (default)
3DES DUKPT
Description
Zero key support off (default)
Zero key support on
Description
Zero GISKE session key
support off (default)
Zero GISKE session key
support on
Description
N/A
Clear all MS master keys and
KLK
X
M 800 S P
ERIES ROGRAMMERS
P
ACKETS
Common Packets
301
G
UIDE