Re: Cannot login into emulated smartcard with OpenSC because it expects external PIN pad.

[Thomas Huth]

On 21/09/2019 10.54, Andrei Borzenkov wrote:
> 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.  -
> no LCD
>   */
> -0x01,   /*
> +0x00,   /*
>   * u8  bPINSupport; 01h PIN Verification,
>   *  02h PIN Modification
>   */

 Hi,

when sending patches, please make sure to include a "Signed-off-by:"
line at the end of the patch description. For details see:

 https://wiki.qemu.org/Contribute/SubmitAPatch

Thanks,
 Thomas

Cannot login into emulated smartcard with OpenSC because it expects external PIN pad.

[Andrei Borzenkov]

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.  -
no LCD
  */
-0x01,   /*
+0x00,   /*
  * u8  bPINSupport; 01h PIN Verification,
  *  02h PIN Modification
  */