There are 3 groups of Access Conditions in MPCOS/GPK.
For Elementary files,
AC1 is for Update
AC2 is for Write(append for record files)
AC3 is for Read
Each access condition is of 2 bytes, which is coded as follows:
BYTE 1
Val(b7, b6) = 00 No secret code protection
01 Protected by secret code SC1(and secure messaging if KeyFile != 00000)
10 Protected by secret codes SC1 and SC2(and secure messaging if KeyFile
!= 00000)
11 Access never allowed.
L(b5) = Level of the key file(0 = global/MF, 1 = local/DF)
KeyFile(b4..b0) = SFI(short file identifier) of the key file(in case of secure
messaging)
BYTE 2
L1(b7) = Level of EFsecretcode which contains SC1
SC1(b6..b4) = first secret code number
L2(b3) = Level of EFsecretcode which contains SC2
SC2(b2..b0) = second secret code number
For your case, that is 0x00, 0x00, 0x00, 0x00, 0x80(1000 0000), 0x81(1000 0001)
Update and Write operations are not protected(FREE) and
Read is protected by 2 secret codes(val = 10), no secure messagin(KeyFile = 00000).
The 2 secret codes are SC1 = secret code number '0' at local/DF level, and SC2 =
secret code number '1' at global/MF level.
By the way, you can find the explanation in the reference manual of the
card(MPCOS/GPK).
----------
Time is a great teacher, but unfortunately it kills all its pupils.
- Hector Louis Berlioz
>-----Original Message-----
>From: Mariano Ortu�o S�nchez [mailto:[EMAIL PROTECTED]]
>Sent: Tuesday, August 01, 2000 4:42 PM
>To: [EMAIL PROTECTED]; [EMAIL PROTECTED]
>Subject: [OCF] GPK AccessConditions
>
>
>
>What is the format of the accessConditions array (describing the Access
>Conditions in the GPK proprietary format), please?
>
>for example:
>
> byte[] ac_4008 = {
> 0, 0, 0, 0, (byte)0x80, (byte)0x81 <-- What is meanig?
> };
> fus.createTransparentFile(ef_4008, 100, ac_4008);
>
>
>
>
>---
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