How can I use MAC session key without card challenge value?
Posted: Fri Dec 11, 2015 2:08 am
As GP 2.2.1 described, the pseudo random is generated as follows:
- The AID of the Application requesting to open the Secure Channel is padded according to the
padding rules defined in appendix B.4 - DES Padding;
- A MAC is calculated across the padded data as defined in appendix B.1.2.2 - Single DES Plus
Final Triple DES MAC , using the C - MAC session key and an ICV of binary zeroes;
- The six leftmost bytes of the resultant MAC constitute the card challenge.
How can I use MAC session key without card challenge value? Could anyone help me out?
- The AID of the Application requesting to open the Secure Channel is padded according to the
padding rules defined in appendix B.4 - DES Padding;
- A MAC is calculated across the padded data as defined in appendix B.1.2.2 - Single DES Plus
Final Triple DES MAC , using the C - MAC session key and an ICV of binary zeroes;
- The six leftmost bytes of the resultant MAC constitute the card challenge.
How can I use MAC session key without card challenge value? Could anyone help me out?