Re: [Globalplatform-developers] Re: [Globalplatform-users] Re: GlobalPlatform2.1.1 and OpenSSL

[Iain M. <mu...@ds...>]

Karsten Ohme wrote on 03/24/06 10:14 PM:
> Karsten Ohme wrote:
>> Karsten Ohme wrote:
>>
>>> Iain MacDonnell wrote:
>>
>>>>> BTW, I've run into what appears to be a bigger problem - have you ever
>>>>> tried this stuff on a big-endian machine?
>>>>>
>>>>> # /opt/ITmuscle/bin/gpshell list-cflex.txt
>>>>> mode_201
>>>>> enable_trace
>>>>> establish_context
>>>>> card_connect
>>>>> select -AID a0000000030000
>>>>> --> 00A404000700000000000000
>>>>
>>>> Note that the AID is not showing in this APDU... compared to below....
>>>
>>> Mmmh, this is a bigger problem. I will see to fix the conversion
>>> routines, if something like this is used, I'm not sure.
> 
> This could be the guilty routine (?):
> 
> It scans two bytes interpreted as a hex byte:
> 
> while (sscanf (&(dummy[i*2]), "%02x", &(pOptionStr->AID[i])) > 0) {
> 	i++;
> }

I think it's a length issue - changing that to:

while (sscanf (&(dummy[i*2]), "%02hhx", &(pOptionStr->AID[i])) > 0)

seems to fix it (for 'select') - the subsequent 'open_sc' fails, but
I'm sure the fix needs to be applied to all of the other sscanf()
calls - eg for '-mac_key'.

   Length Modifiers
      The length modifiers and their meanings are:

      hh              Specifies that a following d, i, o, u, x, X,
                      or  n  conversion  specifier  applies  to an
                      argument with type pointer to signed char or
                      unsigned char.


     ~Iain