[linux-dvb] VP1032 + Cryptoworks

David Santinoli marauder at tiscali.it
Wed Dec 19 11:02:43 CET 2007


On Wed, Dec 19, 2007 at 02:24:41AM +0400, Manu Abraham wrote:
> David Santinoli wrote:
> > I've got a VP1032 CI card (PCI id 1822:0001), a Cryptoworks module
> > by SCM, and a regular JSTV (Japanese satellite TV) subscription, but
> > after 5 minutes or so decryption stops working with a "Received
> > short data" from the tuner app.  Is it a known issue of this card
> > and/or module?
> 
> After getting this message, what does the app_info option of dst test
> say ?

Here's the timeline:

  santinod at romilda:~$ zap -channels ~/.szap/channels.conf 'JSTV1'
  Using frontend "DST DVB-S", type DVB-S
  CAM Application type: 01
  CAM Application manufacturer: d000
  CAM Manufacturer code: 0000
  CAM Menu string: CryptoWorks
  CAM supports the following ca system ids:
  Problem retrieving frontend information: Operation not supported
  status SCVYL | signal 3000 | snr 168d | ber 00000000 | unc 00000000 | FE_HAS_LOCK
  Received new PMT - sending to CAM...
  
  [descrambling works OK for a few minutes, then breaks, and this
  message appears:]

  en50221_app_ai_parse_app_info: Received short data

  [same message repeated ~20 times, then:]

  CAM Application type: 01
  CAM Application manufacturer: d000
  CAM Manufacturer code: 0000
  CAM Menu string: CryptoWorks
  CAM supports the following ca system ids:


If I issue "dst_test -a" at this point, the result is

main: App Info
dst_comms: Msg=[9f 80 30 ]
dst_comms: Msg=[9f 80 31 ]
dst_get_app_info: ================================ CI Module Application Info ======================================
dst_get_app_info: Application Type=[1], Application Vendor=[3329], Vendor Code=[41727]
dst_get_app_info: Application info=[ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ]
dst_get_app_info: ==================================================================================================

[the 'ÿ' character is 0xff]

Issuing the same command while decryption was working would give the
same result.

Thanks,
 David
-- 
 David Santinoli
 Tieffe Sistemi S.r.l.                      viale Piceno 21, Milano
 www.tieffesistemi.com                         tel. +39 02 76115215



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