IDTECH SecureMag - DUKPT Level 4 Data Output Original Format

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SecureMag User Manual
10.4 DUKPT Level 4 Data Output Original Format
For ISO card, both clear and encrypted data are sent. For other card, only clear
data are sent.
A card swipe returns the following data:
Card data is sent out in format of
<STX><LenL><LenH><Card Data><CheckLRC><CheckSum><ETX>
<STX> = 02h, <ETX> = 03h
<LenL><LenH> is a two byte length of <Card Data>.
<CheckLRC> is a one byte Exclusive-OR sum calculated for all <Card Data>.
<CheckSum> is a one byte Sum value calculated for all <Card data>.
<Card Data> format is
ISO/ABA Data Output Format:
 card encoding type (0: ISO/ABA, 4: for Raw Mode)
 track status (bit 0,1,2:T1,2,3 decode, bit
3,4,5:T1,2,3 sampling)
 track 1 unencrypted length (1 byte, 0 for no track1 data)
 track 2 unencrypted length (1 byte, 0 for no track2 data)
 track 3 unencrypted length (1 byte, 0 for no track3 data)
 if card encoding type high bit set
■ mask and clear sent track status
■ encrypt and hash sent track status
In this mode tracks are encrypted separately rather than as a group
 track 1 masked (Omitted if in Raw mode)
 track 2 masked (Omitted if in Raw mode)
 track 3 data (Omitted if in Raw mode)
 track 1&2 encrypted (AES/TDES encrypted data)
 sessionID encrypted (AES/TDES encrypted data)
 track 1 hashed (20 bytes SHA1-Xor)
 track 2 hashed (20 bytes SHA1-Xor)
 track 3 hashed (optional) (20 bytes SHA1-Xor)
 DUKPT serial number (10 bytes)
Non ISO/ABA Data Output Format:
 card encoding type (1: AAMVA, 3: Others)
 track status (bit 0,1,2:T1,2,3 decode, bit
3,4,5:T1,2,3 sampling)
 track 1 length (1 byte, 0 for no track1 data)
 track 2 length (1 byte, 0 for no track2 data)
 track 3 length (1 byte, 0 for no track3 data)
 track 1 data