3 - Command Set
DynaPro Mini| PIN Encryption Device | Programmer’s Manual (Commands)
Page 82 of 128 (
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DFDF25(IFD Serial Number)<len><val>
FA<len>/* container for generic data */
F0<len> /* Transaction Results */
F1<len> /* container for Status Data */
… /* Status Data tags */
F2<len>/* container for Batch Data */
… /* Batch Data tags */
F3<len>/* container for Reversal Data, if any */
… /* Reversal Data tags */
F7<len>/* container for Merchant Data */
… /* < Merchant Data tags */
(Buffer if any to be a multiple of 8 bytes)
CBC-MAC (4 bytes, use MAC variant of MSR DUKPT key)
EMV transaction batch data coming from an SRED device will begin with a two-byte header in big-
endian form (MSB first) that contains the expected total length of the data for the command (all blocks
1..n), excluding data padding and CBC-MAC. Use container
F9
for the MAC structure, use
F8
within
FA
for passing encrypted batch data message, use MAC variant of MSR DUKPT key. The structure is as
follows:
AAAA /* 2-byte MSB message length excluding padding and CBC-MAC */
F9<len> /* container for MAC structure and generic data */
DFDF54(MAC KSN)<len><val>
DFDF55(MAC Encryption Type)<len><val>
DFDF25(IFD Serial Number)<len><val>
FA<len>/* container for generic data */
F0<len> /* Transaction Results */
F1<len> /* container for Status Data */
… /* Status Data tags */
F8<len> /* container tag for encryption */
DFDF59(Encrypted Data Primative)<len><Encrypted
Data val (Decrypt data to read tags)>
DFDF56(Encrypted Transaction Data KSN)<len><val>
DFDF57(Encrypted Transaction Data Encryption
Type)<val>
DFDF58(# of bytes of padding in DFDF59)<len><val>
F7<len>/* container for Merchant Data */
… /* < Merchant Data tags */
(Buffer if any to be a multiple of 8 bytes)
CBC-MAC (4 bytes, use MAC variant of MSR DUKPT key)
The value inside tag
DFDF59
is encrypted and contains the following after decryption:
FC<len>/* container for encrypted generic data */
F2<len>/* container for Batch Data */
… /* Batch Data tags */
F3<len>/* container for Reversal Data, if any */
… /* Reversal Data tags */
The following tables provide details about the data format. For an explanation of the “Format” columns,
see the definitions in
EMV 4.3 Book 3
.