Field 53: Security Related Control Information

Format: an16

PIN Encryption control information. This field is mandatory when online PIN data is present, except where DUKPT information is supplied in Field 63, tag 01.

The field is comprised as below:

Position

Description

Value

1-2

Key Type Identifier

Value

Description

01

TPK

02

ZPK

03

Asymmetric Key

 

3–4

Key Identifier

03 to 99

Value to be provided by Elavon

5–16

Reserved for future use

000000000000

Please note the Key Type and Key Identifiers will be supplied by the Elavon.