IPP MS AND DUKPT COMMUNICATIONS PACKETS
DUKPT-Specific Packets
324 M
X
800 SERIES PROGRAMMERS GUIDE
MS Packet 71
Example:
<STX>71.000010123456789123456<ETX>{LRC}
This packet 71 is the response packet to PIN request Z60 and Z63 when no errors
are detected in the Z60 or Z63 packet. If errors are detected in the Z60 or Z63
packet, the response packet is in the following format:
MS Packet 71 Length:
• MAX: 6 characters
• MIN: 6 characters
MS Packet 71
Example:
<STX>711<ETX>{LRC}
Packet 07: Dummy
Packet
To have the IPP pass the DES reliability test on the MKI program, a dummy
packet 07 is added. When
this packet is received, the IPP only returns an <ACK>,
followed by an <EOT> after a 1 second delay (this delay is necessary for
compatible with the MKI program).
DUKPT-Specific
Packets
The following packets are specific to DUKPT operation. Two DUKPT modes are
implemented in IPP7: 1DES or 3DES. All keys associated with DUKPT are erased
when switching between 1DES and 3DES DUKPT modes.
Packet 19: Select a
DUKPT Engine
The application sends this packet to the IPP to select one of the DUKPT engines
("0", "1", or "2"). It is recommended that the application always send this packet
first before sending a DUKPT packet (eg. packet Z60, Z63, 76, Z69 and 90).
Table 65 MS Response Packet 71 Format: Errors in Z60 or Z63 Packets
Data Element Characteristic Comments
<STX> 1H Start of Text, Value: 02h
Packet Type 2AN Value: 71
Error Code 1N • 1 = no master key
• 2 = account or working key error
• 3 = PIN too long.
• 4 = PIN too short / non-decimal digit(s) in PIN.
• 5 = PIN pad used as DUKPT
a
• 6 = Master key attributes error
• 7 = KOF/GISKE working key attributes error,
key attributes: key usage, algorithm, mode of
use, key version, or key length
a. Error code 5 does not occur in the IPP, since it supports simultaneous DUKPT and MS.
<ETX> 1H End of Text, Value: 03h
{LRC} 1H Error Check
NOTE
This packet was added for IPP8 emulation.
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