Help for Initialize Update for GlobalPlatform command
843851May 5 2004 — edited May 5 2004In GP 2.1 specification,Initialize Update is used to initiate a Secure Channel.
in general, there are three keys in one Secure Channel, S-ENC,S-MAC,DEK.
i think the key(S-ENC) identified by P1(key version) and P2(key identifier) in the APDU.
but how to identify S-MAC key and DEK? by key type? by version? by identifier?
given,there are three keys:key1(S-ENC), key2(S-MAC), key3(DEK) in one Secure Channel.
now send Initialize Update APDU to the card,but P1,P2 identify key2 or key3, not key1.
then how to identify key1?
thanks