[Live-devel] possible to encrypt

[Morgan Tørvolt]

2009/1/26 arun kumar <tparunkumar1 at gmail.com>:
>
>
> 2009/1/26 Ross Finlayson <finlayson at live555.com>
>>
>> i am doing project  broadcast encryption
>>
>>
>>  in LIVE555 Streaming Media in tested program
>> testMPEG1or2AudioVideoStreamer is it possible to encrypt the MPEG file
>> ("using stream cypher") before streaming and decrypt  it at  receiver
>> side....?
>>
>> No, not really, because the parser(s) that this application uses expects
>> to see the input file that's in the proper format (a MPEG Program Stream),
>> and expects to see the enclosed video in the proper format (MPEG Video
>> Elementary Stream).  If you encrypt the file, it will no longer be in a form
>> that the parser(s) understand.
>>
>> --
>>
>> Ross Finlayson
>> Live Networks, Inc.
>> http://www.live555.com/
>> _______________________________________________
>> live-devel mailing list
>> live-devel at lists.live555.com
>> http://lists.live555.com/mailman/listinfo/live-devel
>>
> thank you for your reply sir
> is there any possibility to do this. any other way i can implement the above
> problem.
> i am in a tight situation.
> please give me some idea.
> thankyou
> arun

You can encrypt the actual content, and leave the video structure
intact. In fact, encrypting just a part here and there should be
enough to ruin the stream, but then you should look trought the
standard and figure out a way to signal which content is encrypted.

-Morgan-