Le 27/03/2011 18:50, Frank Morgner a écrit : > On Sunday, March 27 at 10:23AM, Viktor TARASOV wrote: >> Le 25/03/2011 23:07, Frank Morgner a écrit : >>> The smart cards I worked with, that used SM implemented more or less >>> what is defined in ISO 7816. The Wiki states, that GlobalPlatform SCP01 >>> uses a different SM protocol. What exactly does differ from ISO 7816? >> keyset format; session key derivation data; session keys calculation; >> SSC/no-SSC; encrypted data format; MAC computation; ... >> >> Involved symmetric cryptography is essentially the same: 3DES/CBC >> >> For the 'exact' differences you can look through the GP specification, >> or the actual implementation of the both protocols in the IAS/ECC branch. > AFAIK, ISO 7816 defines data encoding, input for the cryptographic > layer and some padding methods.
> Everything you listed would be part of the crypto layer which is not fixed by > ISO 7816. Can you explain yourself ? Yes, it's another crypto layer, that sits beside the ISO-7816's one and that uses the common 'involved cryptography' library. Which layer to use is defined by the card-driver/opensc-configuration during the initialization of the SM context. > Which file would I have to look at for the GP part of your branch? do grep 'sm_gp_' > Greets, > Frank. Kind wishes, Viktor. > > _______________________________________________ > opensc-devel mailing list > opensc-devel@lists.opensc-project.org > http://www.opensc-project.org/mailman/listinfo/opensc-devel -- Viktor Tarasov <viktor.tara...@opentrust.com> _______________________________________________ opensc-devel mailing list opensc-devel@lists.opensc-project.org http://www.opensc-project.org/mailman/listinfo/opensc-devel
