EMV American Express DRL Configuration

EMV American Express DRL Configuration File Type (Not Supported on Expresspay 4.x)

The host can load this file type to control the behavior of the device’s American Express contactless kernel when the card sends tag 9F70 and one or more DRL is defined.

The host can load it using Command 0xD812 - Start Send File to Device (Unsecured). See the Expresspay 4.0.2 specification for functional details.

MagTek provides tools that allow these settings to be loaded using a Microsoft Excel spreadsheet in xlsx format for more convenient authoring, review, and change tracking. For a reference sample spreadsheet, contact MagTek Support Services. The MagTek tools expect the spreadsheet to be formatted as shown in Table 43. Each DRL to be supported is defined in a tab of the Excel file.

Table - EMV Configuration American Express DRL Set File Type

Tag	Len	Value / Description	Typ	Req	Example
DF23	06	Reader Contactless Floor Limit	B	R	00 00 00 00 15 00
DF24	06	Reader Contactless Transaction Limit	B	R	00 00 00 00 05 00
DF26	06	Reader CVM Required Limit	B	R	00 00 00 00 10 00

The MagTek tool converts the spreadsheet data into the raw format shown in Table 44:

Table - Raw EMV Configuration American Express DRL Set File Type

Tag	Len	Value / Description	Typ	Req	Example
File Type Version One byte indicating the version of the file type format being used. 0xAA
SHA-1 Hash 20 byte hash of all values that follow
FF37	var	DRL Configuration Container	T	R
/FF36	var	DRL Set Container	T	R
//DF23	06	Reader Contactless Floor Limit	B	R	00 00 00 00 15 00
//DF24	06	Reader Contactless Transaction Limit	B	R	00 00 00 00 05 00
//DF26	06	Reader CVM Required Limit	B	R	00 00 00 00 10 00
Additional instances of DRL Set Container as needed