INS must not be an odd one (1 3 5 ...) due to ACK protocol at transport level.
CLA Must no be any 6X or 9X, most of the time user app may use 00. ISO 
standards indicates partitions in CLA, with reserved, forbidden and free 
ranges.
SW1 must be one of 6X or 9X

Reading ISO 7816_3 and 7816_4 standards is strongly recommanded.

90 00 ;)
CH

At 16:51 28/03/2001, Sebastien Jean wrote:
>For Ins, use what you want.
>For CLA, avoid to use card supported CLAs. To know what CLA are supported, the
>easyest way is to build an ocf client that
>send APDU to the card (without data) and look for CLA_NOT_SUPPORTED SWs
>
>For SWs, avoid to use the ISO defined ones,
>Just have a look to the ISO7816  interface of the javacard on-card API to see
>what they are.
>
>Hope this helps,
>Baz
>
>--
>Sébastien Jean (a.k.a. Baz)
>PhD candidate
>LIFL - Université des Sciences et Technologies de Lille,
>Batiment M3, bureau 111, F-59655 Villeneuve d'Ascq Cédex
>France
>Tel :  (+33/0) 320 336 132 , Fax:   (+33/0) 320 436 566
>mailto:[EMAIL PROTECTED] , http://www.lifl.fr/~jean
>"if you are aware...you can succeed(Jean-Claude Van Damme)"
>
>
>
>
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