Magtek eDynamo Programmer's Manual page 210

Appendix B - Examples
; Build an Activation Challenge Reply command (cmd, len, cryptogram)
; 11 08 XXXXXXXXXXXXXXXX
;
; The clear text input for the cryptogram is composed of the first
six bytes
; of the decrypted Challenge 1 followed by two bytes specifying how
long to
; stay in the Authenticated Mode.
;
; CCCCCCCCCCCC TTTT
;
; Time examples:
; For 30 seconds use 001E
; For 99 seconds use 0063
; For 480 seconds use 01E0
; For 1200 seconds use 04B0
;
; These values are concatenated to form an eight byte block, we will
use 480
; seconds:
;
; CCCCCCCCCCCC01E0
;
; The block is encrypted using a variant of the Current Encryption
Key
; (Current Encryption Key XOR with 3C3C3C3C3C3C3C3C3C3C3C3C3C3C3C3C)
;
; Current Key
; XOR
; =
;
; 7549AB6EB48401E0 TDES Enc with 31CFE57E16F66A26 7B5B513B91579139
= A30DDE3BFD629ACD
;
; Send the Activation Challenge Reply Command
11 08 A30DDE3BFD629ACD
; Build a Deactivate Authenticated Mode command (cmd, len, cryptogram)
; 12 08 XXXXXXXXXXXXXXXX
;
; The clear text input for the cryptogram is composed of the first
seven bytes
; of the decrypted Challenge 2 followed by one byte specifying
whether to
; increment the DUKPT KSN or not (00 = no increment, 01 = increment).
;
; DDDDDDDDDDDDDD II
;
; These values are concatenated to form an eight byte block, we will
specify
; No Increment:
eDynamo| Secure Card Reader Authenticator | Programmer's Manual (COMMANDS)
0DF3D9422ACA561A 47676D07AD6BAD05
3C3C3C3C3C3C3C3C 3C3C3C3C3C3C3C3C
31CFE57E16F66A26 7B5B513B91579139
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