Re: Re:SOLVED [Muscle] Setting up connection to JCOP 21 card

[Peter Williams]

Dont forget, being based on a block cipher, the mac's feedback process 
reflected in the next round's IV can vary. In GP, the choice depends on the 
SCP selected.

Think of SCP as the choice of "ciphersuite" - a term from the SSL world
----- Message ----- 
From: "Mladen Gavrilovic" <[EMAIL PROTECTED]>
To: "MUSCLE" <[EMAIL PROTECTED]>
Sent: Friday, December 03, 2004 1:27 PM

In this case, you can just do 2DES (3DES where key 1 = key 3) on the 
24-byte
chunk described in the GlobalPlatform specification, with a beginning IV 
of
zero (successive IVs are the MAC of the previous step).  The last 8-bytes 
of
the 24-byte cyphertext are the MAC.
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