Hello, 2010/12/12 Andre Zepezauer <andre.zepeza...@student.uni-halle.de>: > Hello Andreas, > > some time ago, you have changed the comments on reader max_x_sizes in > opensc.conf [1]: > > "Some reader drivers have limitations, so you need to set these values. > For usb devices check the properties with lsusb -vv for dwMaxIFSD." > > Can you remember why pointing the user to dwMaxIFSD? AFAIK this value is > of relevance only for T=1 protocol. But T=1 is capable of transmitting a > single APDU in multiple parts, where each part can have a size of up to > dwMaxIFSD. In the result T=1 can easily handle APDU:s of every size and > therefore the above hint is misleading.
It is a bit more complex that just T=0 vs T=1. Another important part is reader mode in TPDU, short APDU or extended APDU. See [2]. > I would like to remove these lines in opensc.conf. Any objections? I don't know what the limitations are and with which reader/driver. Andreas, do you remember what the problem was and in what configuration? Was it with a CCID reader? Bye > [1] http://www.opensc-project.org/opensc/changeset/3124/ [2] http://pcsclite.alioth.debian.org/ccid_extended_apdu.html -- Dr. Ludovic Rousseau _______________________________________________ opensc-devel mailing list opensc-devel@lists.opensc-project.org http://www.opensc-project.org/mailman/listinfo/opensc-devel
