Re: [Discuss-gnuradio] descrambling radio waves

Sample CCSDS frames that were crypted (not ment for my eyes)
http://www.poes-weather.com/~aptdecoder/martin/Meteosat9--LRIT/2011-11-17-meteosat9--cadu.txt

P

----- Original Message -----
From: "Patrik Tast" <patrik@poes-weather.com>
To: "Vikas N Kumar" <walburn@gmail.com>; <discuss-gnuradio@gnu.org>
Sent: Tuesday, June 19, 2012 17:01
Subject: Re: [Discuss-gnuradio] descrambling radio waves


> Hi Vikas,
>
> If the signal is crypted then it was not ment for you unless you have a
> KEY to "unlock".
> In CCSDS (digital reception) frame header there is a bit telling you if
> data is/not crypted. It also contains the key number that you have to use
> to descramble it.
>
> GNU Radio does not support hacking, it is up to you if you want to do/try
> and embarres yourself
>
> Be honest and forget that (stuped) idea,
> Patrik
>
> ----- Original Message -----
> From: "Vikas N Kumar" <walburn@gmail.com>
> To: <discuss-gnuradio@gnu.org>
> Sent: Tuesday, June 19, 2012 16:47
> Subject: [Discuss-gnuradio] descrambling radio waves
>
>
>> Hi
>>
>> I am researching methods/algorithms to perform descrambling of
>> scrambled radio waves as part of a research project.
>>
>> - I was hoping to find out if anyone here knows about or has resources
>> where GNU radio is being used for doing such things. If yes, what
>> algorithms are possibly used to scramble the content ? Do the
>> algorithms depend on the hardware or since this is SDR it doesn't
>> matter ?
>>
>> - i have used GNU radio successfully to receive FM waves and listen to
>> music. however, while trying to transmit I am not having much success
>> and have not found much documentation on that. Does anyone
>> successfully transmit using GNU radio or are they using separate
>> software ?
>>
>> - can we transmit and receive at the same time in the same application
>> using the same hardware ?
>>
>> Thanks
>> Vikas
>> --
>> http://www.vikaskumar.org/
>>
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>
>
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