User's Manual

PIN Pad 791 Programmer’s Manual (PCI POS-A) UDN PM0103-U Rev. 06

Section 5 – Administration and maintenance messages 2015-04-20

Page29

Uniform Industrial Corp. Proprietary and Confidential Total 342 pages

Message element:

Request fame (HOST to PP791)

Field Length Value and description

02 2 Message ID

[Key ID] 1 ‘0’ to ‘9’, ‘A’ to ‘V’ (A and H to V is not used)

[Key value]

Var. Hexadecimal string for key value.

Clear text format: 32 bytes for double length, 48

bytes for triple length.

TR31 format: 56 bytes for single length, 72 bytes

for double length, 88 bytes for triple length.

<FS> 1 Field separator.

(Optional, only available in clear text format frame

if following [Usage] and [Mode] exists)

[Usage] 2 (Optional: ANSI TR-31 key usage for clear text

frame.)

Available value are:

“K0” for key encryption. (id 0 ~ 9, B ~ G)

“P0” for PIN encryption. (id 0 ~ 9)

“M3” for MAC calculation. (id B ~ E)

“D0” for data encryption. (id G)

If omitted, default value is “K0”

[Mode] 1 (Optional: ANSI TR-31 key mode for clear text

frame.)

Available value are:

‘D’ for decryption only. (K0 keys)

‘E’ for encryption only (P0 / D0 keys)

‘G’ for MAC generation only (M3 keys)

‘V’ for MAC verification only (M3 keys)

If omitted, default value is ‘D’.

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