Change Card Manager AID on JavaCard 3.x

[james]

I'm trying to change the card manager AID on a JavaCard 3.x smartcard by using a STORE DATA command. The current card manager AID is the factory default of A0 00 00 01 51 00 00 00. After authenticating with the card manager, the command I'm sending is:

Code: Select all

=> 80 E2 80 00 0A 4F 08 A0 00 00 00 03 00 00 00
<= 6A 88

This command executes successfully on a JavaCard 2.2.x card - has this feature been deprecated on JC 3.x?

[mabel]

Try to use 80 e2 80 00 0d 0070 0a 4f 08 a000000151000000 instead of the command you wrote.

Related commands:

RESET; 00a4040000; AUTH 3; 80e280000d00700a4f08a000000151000000; RESET;

Hope this can help.

[james]

The extra 00 70 bytes in there specify DGI formatting I believe? I have also tried this option, and it fails with a different error:

Code: Select all

=> 80 E2 80 00 0C 00 70 4F 08 A0 00 00 00 03 00 00 00
<= 6A 80

[mabel]

You forgot the data length after 0070. It should be 0070 Length XXXXXX.

>> 80 E2 80 00 0C 00 70 0A 4F 08 A0 00 00 00 03 00 00 00

[james]

Great spot, thanks. The DGI-formatted command was being generated by the JCOP Tools, so I had assumed it was in the right format!