Re: Is Le not logged

Thanks Douglas,

https://www.iso.org/standard/70479.html

This is to be paid version.

From where you get ISO 7816-4 [1]


On 08/13/2018 07:25 PM, Douglas E Engert wrote:
> ISO 7816-4 [1] answers most of your questions in Section "5.3 APDU
> message structure"
> and Section 6 - Basic Interindustry Commands"
>
> Note the class of the command determines if Lc and/or Le are present.
> The command your
> are looking at is "CA" see "6.9 GET DATA command" The protocol T=0 or
> T=1 also comes
> into play.
>
> As you read through 7816 you will not how complicated it is. And even
> worse when it is
> a proprietary command, where CLA byte is 8X or 9X. Thus there is a lot
> of code that
> your card may not be using, but other cards do.
>
> [1] http://cardwerk.com/iso-7816-smart-card-standard/
> or other source.
>
>
> On 8/8/2018 7:38 AM, Amit wrote:
>> Dear Devels,
>>
>> I see this after connecting Atos card 5.3
>> # /usr/local/bin/opensc-tool -a -vvv
>> 0x7fd485e77880 17:20:53.811 [opensc-tool]
>> apdu.c:378:sc_single_transmit: CLA:0, INS:CA, P1:1, P2:8D, data(0) (nil)
>> 0x7fd485e77880 17:20:53.811 [opensc-tool]
>> reader-pcsc.c:284:pcsc_transmit: reader 'Gemalto PC Twin Reader 00 00'
>> 0x7fd485e77880 17:20:53.811 [opensc-tool]
>> reader-pcsc.c:285:pcsc_transmit:
>> Outgoing APDU (5 bytes):
>> 00 CA 01 8D 02 .....
>> 0x7fd485e77880 17:20:53.811 [opensc-tool]
>> reader-pcsc.c:213:pcsc_internal_transmit: called
>> 0x7fd485e77880 17:20:53.815 [opensc-tool]
>> reader-pcsc.c:294:pcsc_transmit:
>> Incoming APDU (4 bytes):
>> 01 80 90 00 ....
>>
>> What is 02 in CAPDU (00 CA 01 8D 02)? Is this Le?
>>    P1=01(1st parameter), P2=8D(2nd parameter)
>>
>> Is RAPDU correct?  (01 80 90 00)
>> a. Asked P2 was 8D, but came=80. Does this mean card does not have
>> data starting from 01 8D?
>> b. Do I need to ask communication specs from manufacturer of card for
>> same.
>>
>> Too early to say but sorry I  feel there is lot of repetitive code we
>> can optimize it.
>>
>>
>> -- 
>> Thanks
>> Amit Kumar
>> !!If you stumble, get back up.
>> What happened yesterday, no longer matters.
>> Today is another day to move closer to your GOAL!!
>>
>>
>>
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>

-- 
Thanks
Amit Kumar
!!If you stumble, get back up. 
What happened yesterday, no longer matters.
Today is another day to move closer to your GOAL!!

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