https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=6463
Summary: dissector for HDCP (High bandwidth Digital Content
Protection)
Product: Wireshark
Version: SVN
Platform: Other
OS/Version: All
Status: NEW
Severity: Enhancement
Priority: Low
Component: Wireshark
AssignedTo: bugzilla-admin@xxxxxxxxxxxxx
ReportedBy: wireshark@xxxxxxxxx
Created an attachment (id=7254)
--> (https://bugs.wireshark.org/bugzilla/attachment.cgi?id=7254)
new dissector for the HDCP protocol, patch against r39446
Build Information:
TShark 1.7.0 (SVN Rev 39446 from /trunk)
Copyright 1998-2011 Gerald Combs <gerald@xxxxxxxxxxxxx> and contributors.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Compiled (64-bit) with GLib 2.16.6, with libpcap 0.9.8, with libz 1.2.3.3,
without POSIX capabilities, with threads support, without SMI, without c-ares,
without ADNS, without Lua, with Python 2.5.2, with GnuTLS 2.4.2, with Gcrypt
1.4.1, with MIT Kerberos, without GeoIP.
Running on Linux 2.6.29.1, with locale en_US, with libpcap version 0.9.8, with
libz 1.2.3.3.
Built using gcc 4.3.2.
--
Dear all,
recently, I had to look into HDCP a little bit. As there's no wireshark
dissector for this protocol, I decided to start one. Please find it attached.
HDCP can run on top of TCP, there's no fixed port number assigned. I created a
heuristic dissector that's disabled by default and can be enabled by setting a
preference (similar to the hilscher dissector). The idea behind this is that
some HDCP messages are hard to recognize (e.g. one byte message id + 8 random
bytes). Having the dissector enabled at all times may generate false positives.
For long unsigned int values (>64bit), I used FT_BYTES.
For now, the dissector supports only the most common messages used during an
hdcp authentication. It uses the ptvcursor api and should be easy to extend.
I ran checkAPI.pl and checkhf.pl. Code is fuzz-tested. The attached sample
capture shows an HDCP authentication between a DVB receiver and a mobile device
that acts as a sink for audio/video content.
Thanks for your feedback and for merging this new dissector.
Martin
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