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List:       ms-smartcardddk
Subject:    Re: How to send data more than 254 bytes using SCardTransmit() an
From:       Gilles Riffaud <Gilles.Riffaud () ACTIVCARD ! FR>
Date:       2002-03-18 13:22:01
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Hi,
we have the same problem but we never found any response on the archives
mailing list
1. The EDC is not computed when IFSC >= 253,
2. When we send a long APDU (260 bytes) with an IFSC=254, Smclib doesn't
compute a chained block data but only one block data (the More bit of PCB
field is set to zero)
Is it a known bug of smclib?

-----Original Message-----
From: Chi Tse [mailto:ctse@CERTICOM.COM]
Sent: mardi 19 septembre 2000 20:03
To: SmartCardSDK@DISCUSS.MICROSOFT.COM
Subject: How to send data more than 254 bytes using SCardTransmit() and
T =1 protocol


Hi,

I am try to send data more than 254 bytes using SCardTransmit() and T=1
protocol, can anyone tell me how I can do that?
I've try that, but I am getting 2 problems:

1) If data more than 252 bytes, the smartcard will receive incorrect
checksum.
2) If data more than 254 bytes, the PCB remains unchanged (i.e. PCB = 0x00),
and
the smartcard will treat it as a single block data.

Cheers,

Chi Tse
MTS
Certicom Corp.
ctse@certicom.com
Tel: (905)501-3801



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