MagTek DynaPro Mini Programmer's99875629 - Manual (Page 53)

3 - Command Set
DynaPro Mini| PIN Encryption Device | Programmer’s Reference (Commands)
Page 53
Bit 7 6 5 4 3 2 1 0
Byte 2..11 Data block:
Byte 2 – Byte 11 contain the KSN
Byte 12..19 Device Serial Number
Byte 20..23 Padding
Byte 24..27 CBC-MAC
3.4.28 Report 0x31 – Set KSN Encrypted Data
Before using this command, the host must have already used Report 0x30 – Set / Get KSN to retrieve
the MSR dukpt KSN from the device. Then the host must use Report 0x10 – Send Big Block Data to
Device to send encrypted PAN data to the device, in the following format:
AAAA /* 2-byte MSB message length excluding padding and CBC-MAC */
F9 /* container for MAC structure and generic data */
DFDF54(MAC KSN)
DFDF55(MAC Encryption Type)
DFDF25(IFD Serial Number)
FA/* container for generic data */
DFDF44 (Encrypted PAN data)
(Buffer if any to be a multiple of 8 bytes)
CBC-MAC (4 bytes, use MAC variant of MSR dukpt key)
The host can then use this command to process data in the big block. The device decrypts and displays
the data until the display timeout expires.
This feature is used for the Token Reversal Function.
The value of DFDF44 is always encrypted under the data variant of the MSR dukpt key.
Responses:

OK, ACKSTS = 0

Bad CBC-MAC ACKSTS = 0x82

Wrong Serial Number, ACKSTS = 0x82
Table 3-43 – Usage Table for Report 0x31
Bit 7 6 5 4 3 2 1 0
Byte 0 0x31
Byte 1 Display Time in seconds, (1 – 255; 0 = 256 seconds)