Ms Packet 08: Select A Master Key - VeriFone MX800 series Programmer's Manual

IPP MS DUKPT C
AND OMMUNICATIONS
MS-Specific Packets
MS Packet 08:
Select a Master Key
MS Packet 08 Length:
MS Packet 08
Example:
322
M X 800 S P
ERIES ROGRAMMERS
P
ACKETS
Table 61 Response Packet 04 GISKE Block Format Communication
Protocol
Master Device
<SI>04[a]<SO>{LRC}
ACK if LRC okay
•
NAK if LRC incorrect
•
EOT after 3 NAKs
•
The master device sends this packet to the IPP to select one of the ten possible
master keys (0–9). It is recommended that the master device should always send
this packet first before sending a packet (for example,
Encrypt PIN (VISA Mode)) to request for PIN entry.
Table 62 MS Packet 08 Format
Data Element Characteristic
<SI> 1H
Packet Type 2AN
[a] 1N
<SO> 1H
1H
{LRC}
•
MAX: 6 characters
•
MIN: 6 characters
To select Master Key 7:
<SI>087<SO>{LRC}
G
UIDE
Transmit
IPP
Direction
ACK if LRC okay
•
NAK if LRC incorrect
•
EOT after 3 NAKs
•
PIN pad checks requested address [a].
•
<SI>04[r][KUA][MOUA][MACMA][KV][KL]<SO>{L
RC}
EOT
Comments
Shift In, Value: 0Fh
Value: 08
Master Key address: 0–9
Shift Out, Value: 0Eh
Error Check
Packet Z60: Accept and