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Re: [Opensc-devel] Is Le not logged
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From: Douglas E E. <dee...@gm...> - 2018-08-13 13:55:54
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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!! > > > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > > > > _______________________________________________ > Opensc-devel mailing list > Ope...@li... > https://lists.sourceforge.net/lists/listinfo/opensc-devel > -- Douglas E. Engert <DEE...@gm...> |
