init-update

Kirim perintah INIT UPDATE ke kartu
80 50 00 00 08 83 6F C1 68 88 16 79 66

Maka kartu memberi respon:
00 00 12 09 00 17 84 95 67 17 FF 02 00 1A 36 CE A1 BB B6 FD 9A DF 53 EC 57 A7 AA 39 90 00

Respon tsb di-parse sesuai spec Global Platform:
00 00 12 09 00 17 84 95 67 17 	-> key diversification data
FF 02 				-> key information (Secure Channel Protocol 02)
00 1A 				-> sequence counter
36 CE A1 BB B6 FD 		-> card challenge
9A DF 53 EC 57 A7 AA 39 	-> card cryptogram

Pertanyaan:
Bagaimana kartu menghitung card cryptogram, yaitu 9A DF 53 EC 57 A7 AA 39 diatas?