9 - Properties
eDynamo| Secure Card Reader Authenticator | Programmer’s Manual (COMMANDS)
Page 151 of 245 (D998200115-17)
9.18 Property 0x54 - Card Data Encryption Variant (MSR Only, Configurable
MSR Variants Only)
Property ID: 0x54
Property Type: Byte
Length: 1 byte
Get Property: Yes
Set Property: Yes
Default Value: 0x00 (PIN Variant)
This property specifies which variant of the current DUKPT Key the device uses to encrypt magnetic
stripe Track 1 Encrypted Data, Track 2 Encrypted Data, Track 3 Encrypted Data, and Encrypted
Session ID:
0x00 = Use PIN Encryption variant
0x01 = Use Data Encryption, request or both ways variant
The host software should use this value to determine how to create the correct Derived Key to decrypt
Encrypted Track Data (see section 5 Encryption, Decryption, and Key Management). The
algorithms for creating the Derived Key fitting each of the possible variants are fully specified in ANS
X9.24-1:2009.
Some devices are configured to only allow the manufacturer to modify this property.
This property is stored in non-volatile memory, so it persists when the device is power cycled. When this
property is changed, the device must be reset (see Command 0x02 - Reset Device) or powered off for at
least 30 seconds, then powered on, before the changes will take effect.
Example Set Request (Hex)
Example Set Response (Hex)
Example Get Request (Hex)
Example Get Response (Hex)