User manual

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MS246 User Manual

Response is as follows:

ACK STX <Copyright String> ETX LRC

Response Example mixed hex and ASCII:

7.2 Version Report Command

02 39 03 38

Response is as follows:

ACK STX<Version String> ETX LRC

Response Example mixed hex and ASCII:

\06\02UNITECH TM3 MS246 RS232 Reader V 3.19\03\LRC

7.3 Key Loading Command

Note: This command is normally only used by a key loading facility.

The Encrypted swipe read supports TDES and AES encryption standards for data

encryption. Encryption can be turned on via a command. TDES is the default.

If the reader is in security level 3, for the encrypted fields, the original data is

encrypted using the TDES/AES CBC mode with an Initialization Vector starting at all

binary zeroes and the Encryption Key associated with the current DUKPT KSN.

KSN and Device Key loading commands and responses protocol:

When DUKPT key management is used, it is necessary to load Key Serial Number

(KSN) and Initially Loaded Device Key before transaction.

The encryption key is TDES with 128 bit keys or AES encryption with double length

keys (128 bit keys including parity).

KSN and Device Key loading commands and responses protocol:

Command:

Response:

<LRC>

STX: 0x02

ETX: 0x03

ACK: 0x06

NAK: 0x15

BASE64: Data encoded with base64 algorithm

LRC: Xor’d all the data before LRC