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DSMx hijacking

alonso acuña
They say the fix would have to be implemented in the reciever end

Does Paparazzi have any protection against this? We use Lisa/M as a receiver. I also wonder if DSM2 is affected.

Thanks

Alonso

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Re: DSMx hijacking

Chris
Hi.
I never understood why people use the spectrum system, it was buggy from the start when rc models where comming down like flies.
Use Openlrsng which is open and if you can code you can encrypt the packets at will.
I have designed my own hardware (tx and rx ) with 1w rf output, transparent serial link so no need for a separate telwmetry modem and tested 40km range.
This system eliminates the need for a telemwtry system since it also provides a transparent serial link that works fine.
Google Openlrsng git and you will find the code, ready made hardware can be bought from Hobbyking but not 1w receivers
If you can't code then this system is not for you so i would buy the Frsky ACCST sytem that i consider the best at 2.4 ghz
Chris

On 11/1/2016 5:25 PM, alonso acuña wrote:
They say the fix would have to be implemented in the reciever end

Does Paparazzi have any protection against this? We use Lisa/M as a receiver. I also wonder if DSM2 is affected.

Thanks

Alonso


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Re: DSMx hijacking

Michal Podhradsky
Hi Chris,

thanks for mentioning Openlrsng - open source firmware is the way to go. Since you mentioned encryption, I assume there is currently no encryption implemented?

Alonso, no paparazzi doesn't provide encryption or any "intruder-detection" features - but frankly the best way to go around this is to have encrypted telemetry (SiK radio supports AES encryption, so do Xbee modems) as well as encrypted RC (I don't know about any vendor offering this feature, maybe Openlrsng will?).

Regards
M

On Tue, Nov 1, 2016 at 10:35 AM, Chris Efstathiou <[hidden email]> wrote:
Hi.
I never understood why people use the spectrum system, it was buggy from the start when rc models where comming down like flies.
Use Openlrsng which is open and if you can code you can encrypt the packets at will.
I have designed my own hardware (tx and rx ) with 1w rf output, transparent serial link so no need for a separate telwmetry modem and tested 40km range.
This system eliminates the need for a telemwtry system since it also provides a transparent serial link that works fine.
Google Openlrsng git and you will find the code, ready made hardware can be bought from Hobbyking but not 1w receivers
If you can't code then this system is not for you so i would buy the Frsky ACCST sytem that i consider the best at 2.4 ghz
Chris


On 11/1/2016 5:25 PM, alonso acuña wrote:
They say the fix would have to be implemented in the reciever end

Does Paparazzi have any protection against this? We use Lisa/M as a receiver. I also wonder if DSM2 is affected.

Thanks

Alonso


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Re: DSMx hijacking

Chris
Hi.
No Openlrsng does not have any encryption but it is so simple to add it, just encrypt with a key the packet payload.
Because it also provides the telemetry link , both will be encrypted.
The most significant thing is that if there is any security breach the encryption code can be changed at will.
Chris


On 11/1/2016 8:29 PM, Michal Podhradsky wrote:
Hi Chris,

thanks for mentioning Openlrsng - open source firmware is the way to go. Since you mentioned encryption, I assume there is currently no encryption implemented?

Alonso, no paparazzi doesn't provide encryption or any "intruder-detection" features - but frankly the best way to go around this is to have encrypted telemetry (SiK radio supports AES encryption, so do Xbee modems) as well as encrypted RC (I don't know about any vendor offering this feature, maybe Openlrsng will?).

Regards
M

On Tue, Nov 1, 2016 at 10:35 AM, Chris Efstathiou <[hidden email]> wrote:
Hi.
I never understood why people use the spectrum system, it was buggy from the start when rc models where comming down like flies.
Use Openlrsng which is open and if you can code you can encrypt the packets at will.
I have designed my own hardware (tx and rx ) with 1w rf output, transparent serial link so no need for a separate telwmetry modem and tested 40km range.
This system eliminates the need for a telemwtry system since it also provides a transparent serial link that works fine.
Google Openlrsng git and you will find the code, ready made hardware can be bought from Hobbyking but not 1w receivers
If you can't code then this system is not for you so i would buy the Frsky ACCST sytem that i consider the best at 2.4 ghz
Chris


On 11/1/2016 5:25 PM, alonso acuña wrote:
They say the fix would have to be implemented in the reciever end

Does Paparazzi have any protection against this? We use Lisa/M as a receiver. I also wonder if DSM2 is affected.

Thanks

Alonso


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Re: DSMx hijacking

martinvk
Nice work chris. We did with the BeastTX the same. Did you commit your code to the main openlrs project?
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