Adding support for this Watchdata token

Hello everyone,

There are these tokens from CCID compliant (I think so) Watchdata
available in the Indian market which are not yet supported in OpenSC.
I would like to work on adding support for them in OpenSC.
I read https://github.com/OpenSC/OpenSC/wiki/Adding-a-new-card-driver
and that's where I'll begin.

What I would like to know is whether I'll make significant progress
without any documentation from Watchdata. Will trying to implement the
driver using data from a USB Sniffer really work ?

Which card driver do you suggest I use as skeleton for this new driver?

Here is debug information about the token.

$ opensc-tool -l
Detected readers (pcsc)
Nr. Card Features Name
0 Yes TrustKey [WDIND USB CCID Key] 00 00

$ pkcs11-tool -L
Available slots:
Slot 0 (0xffffffffffffffff): Virtual hotplug slot
(empty)
Slot 1 (0x1): TrustKey [WDIND USB CCID Key] 00 00
(empty)

$ opensc-tool -n
Using reader with a card: TrustKey [WDIND USB CCID Key] 00 00
Unsupported card

--------------------------------------------------------------------------------------------------------
Output of Pykcs11 with proprietary driver:

# PYKCS11LIB=/usr/lib/WatchData/TRUSTKEY/lib/libwdpkcs_TRUSTKEY.so
python getinfo.py -p abcd1234
cryptokiVersion: 2.10
flags:
libraryDescription: PKCS#11 cryptoki module
libraryVersion: 1.0
manufacturerID: WatchData
Available Slots: 3 [1, 2, 3]
Slot n.: 1
 firmwareVersion: 1.00
 flags: CKF_REMOVABLE_DEVICE, CKF_HW_SLOT
 hardwareVersion: 1.00
 manufacturerID: Watchdata Technologies Pte.Ltd
 slotDescription: WatchData IC CARD Reader/Writer 0
 SessionInfo Error: CKR_SLOT_ID_INVALID (0x00000003)
Slot n.: 2
 firmwareVersion: 1.00
 flags: CKF_REMOVABLE_DEVICE, CKF_HW_SLOT
 hardwareVersion: 1.00
 manufacturerID: Watchdata Technologies Pte.Ltd
 slotDescription: WatchData IC CARD Reader/Writer 1
 SessionInfo Error: CKR_SLOT_ID_INVALID (0x00000003)
Slot n.: 3
 firmwareVersion: 1.00
 flags: CKF_REMOVABLE_DEVICE, CKF_HW_SLOT
 hardwareVersion: 1.00
 manufacturerID: Watchdata Technologies Pte.Ltd
 slotDescription: WatchData IC CARD Reader/Writer 2
 SessionInfo Error: CKR_SLOT_ID_INVALID (0x00000003)

--------------------------------------------------------------------------------------------------------
~$ lsusb -d 163c:0418 -v
Bus 003 Device 009: ID 163c:0418
Couldn't open device, some information will be missing
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0
  bDeviceProtocol         0
  bMaxPacketSize0        64
  idVendor           0x163c
  idProduct          0x0418
  bcdDevice            0.01
  iManufacturer           1
  iProduct                2
  iSerial                 0
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength          109
    bNumInterfaces          2
    bConfigurationValue     1
    iConfiguration          0
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              100mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass         8 Mass Storage
      bInterfaceSubClass      6 SCSI
      bInterfaceProtocol     80 Bulk-Only
      iInterface              4
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x01  EP 1 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass        11 Chip/SmartCard
      bInterfaceSubClass      0
      bInterfaceProtocol      0
      iInterface              5
      ChipCard Interface Descriptor:
        bLength                54
        bDescriptorType        33
        bcdCCID              1.10  (Warning: Only accurate for version 1.0)
        nMaxSlotIndex           0
        bVoltageSupport         1  5.0V
        dwProtocols             1  T=0
        dwDefaultClock       3580
        dwMaxiumumClock     14320
        bNumClockSupported      0
        dwDataRate           9600 bps
        dwMaxDataRate      115200 bps
        bNumDataRatesSupp.      0
        dwMaxIFSD             254
        dwSyncProtocols  00000000
        dwMechanical     00000000
        dwFeatures       00010030
          Auto clock change
          Auto baud rate change
          TPDU level exchange
        dwMaxCCIDMsgLen       271
        bClassGetResponse      00
        bClassEnvelope         00
        wlcdLayout           none
        bPINSupport             0
        bMaxCCIDBusySlots       1
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               0

------------------------------------------------------------------------------------------------------------

ccid-1.4.28# cat output.txt
 idVendor: 0x163C
  iManufacturer: Watchdata
 idProduct: 0x0418
  iProduct: USB Key
 bcdDevice: 0.01 (firmware release?)
 bLength: 9
 bDescriptorType: 4
 bInterfaceNumber: 1
 bAlternateSetting: 0
 bNumEndpoints: 2
  bulk-IN and bulk-OUT
 bInterfaceClass: 0x0B [Chip Card Interface Device Class (CCID)]
 bInterfaceSubClass: 0
 bInterfaceProtocol: 0
  bulk transfer, optional interrupt-IN (CCID)
 iInterface: WDIND USB CCID Key
 CCID Class Descriptor
  bLength: 0x36
  bDescriptorType: 0x21
  bcdCCID: 1.10
  bMaxSlotIndex: 0x00
  bVoltageSupport: 0x01
   5.0V
  dwProtocols: 0x0000 0x0001
   T=0
  dwDefaultClock: 3.580 MHz
  dwMaximumClock: 14.320 MHz
  bNumClockSupported: 0 (will use whatever is returned)
   IFD does not support GET CLOCK FREQUENCIES request: Resource
temporarily unavailable
  dwDataRate: 9600 bps
  dwMaxDataRate: 115200 bps
  bNumDataRatesSupported: 0 (will use whatever is returned)
   IFD does not support GET_DATA_RATES request: Resource temporarily unavailable
  dwMaxIFSD: 254
  dwSynchProtocols: 0x00000000
  dwMechanical: 0x00000000
   No special characteristics
  dwFeatures: 0x00010030
   ....10 Automatic ICC clock frequency change according to parameters
   ....20 Automatic baud rate change according to frequency and Fi, Di params
   01.... TPDU level exchange
  dwMaxCCIDMessageLength: 271 bytes
  bClassGetResponse: 0x00
  bClassEnvelope: 0x00
  wLcdLayout: 0x0000
  bPINSupport: 0x00
  bMaxCCIDBusySlots: 1

------------------------------------------------------------------------------------------------------------------

Thanks for reading through.

Regards
Mandar Joshi

------------------------------------------------------------------------------
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot