USB card reader emulated by QEMU announces presence of PIN pad. OpenSC
will not request PIN from user in this case and assumes PIN is being
entered off-band on external device. Unfortunately QEMU does not seem to
offer PIN entry and access to card always fails.
Changing device to not announce non-existing capability fixes it and
allows to use OpenSC framework with emulated card.
--- a/hw/usb/dev-smartcard-reader.c
+++ b/hw/usb/dev-smartcard-reader.c
@@ -398,7 +398,7 @@ static const uint8_t qemu_ccid_descriptor[] = {
* u16 wLcdLayout; XXYY Number of lines (XX) and
chars per
* line for LCD display used for PIN entry. 0000 -
no LCD
*/
- 0x01, /*
+ 0x00, /*
* u8 bPINSupport; 01h PIN Verification,
* 02h PIN Modification
*/
