Decrypting Digital???

[camlew2]

Hey Guys
I have a Uniden UBCD396T and wondering if u can decrypt digital ecryted transmissions and how?
Thanks
Cam

 

[scannerfreak]

No It's Illegal and please do not ask these types of questions here. Closed

 

[WayneH]

No It's Illegal and please do not ask these types of questions here. Closed

Encryption laws could be different in Australia.

Regardless, do a search on the forums. What you need and your possible success (er, failure) aren't worth it.

 

[scannerfreak]

You are right Wayne, They are..I had thought I read somewhere here at one time that it was Illegal there as well, but I have been corrected and apologize to the O/P. Insert Foot in Mouth Here Re-Opened

 

[jparks29]

Also, understand there's a difference between a digital VOCODER, and "digital" ENCRYPTION.....

Encryption is an intentional means to scramble the message, using DES/DES-XL/DES-OFB/AES/Fascinator/etc etc. THAT is just about impossible to decode, you need the right hardware, and the right key, good luck, because you'll need to randomly pick the right key, of billions of possible combinations...

A VOCODER on the other hand, will take analog audio , and convert it into a digital stream, that's not necessarily encrypted, you can very easily listen to an IMBE/AMBE transmission with the right equipment, without a need to "decrypt" anything...

digital does NOT mean encrypted, encryption CAN be in a digital format, but encryption doesn't HAVE to be digital, there is analog encryption as well (depending on your definition)...

so, find out FIRST if what you want to hear is just "digital" , or actually encrypted....

 

[Comint]

Considering where the OP hails from, I would guess he is talking about the MMR network which is encrypted by at least DES-OFB, if not AES. So I would suggest a read of the following post may be of interest.

http://www.radioreference.com/forums/showpost.php?p=412886&postcount=63

Bear in mind that the encrypted message they "cracked" was actually text, not digitised audio, and that the participants had been given the first 13 characters of "plain text", which made the task thousands, if not millions, of times easier, and it STILL took them days to crack.

Their third attempt used the customised multi-processor system together with over a thousand networked PCs. Not very practical for the average scanner user.

 

[hankv]

Hey Guys
I have a Uniden UBCD396T and wondering if u can decrypt digital ecryted transmissions and how?
Thanks
Cam

The realistic answer is [size=+1]NO[/size].

If you want to spend several years studying the subject, so that five or more years from now you can listen to a transmission that happened today, then the answer is maybe.

 

[commscanaus]

Even if the laws here are different- certain agencies would take more than a passing interest to such a device or method being in exsistence and use.

The MMR network here in Melbourne is trunked P25 and so far has the Police, Fire and Ambulance services using the network. Police are fulltime encrypted on ALL talkgroups, which to my understanding is AES256 with OTAR ability. All radios on the network are either XTS5000 or XTL5000.

The police used to be conventional analogue on 468Mhz, which was being simulcast on to the MMR during the fitout stage. August 8 2006 saw the analogue switched off for good.
I suspect there are some ex-listeners suffering withdrawal symptoms since the Police are no longer audible.

Oh well, at least there were lots of nice Saber III's to be had at next to nothing from over the border in South Australia- they use P25 now too.

Not going to hold my breath when it comes to ever being able to listen in again.

Commscanaus.

 

[camlew2]

I have heard receltly them turning off the ecrpting for 10 min or so due to problems, People think its just a matter of time before some1 hacks into it, As someone said to me that i know....Just go to every repeater and drop a carrier and dnt get busted and try and bugger up the ecryption.... only if that worked

 

[rdale]

"People think its just a matter of time before some1 hacks into it"

Those people are wrong... I'm not sure what attacking the system (which is illegal and can result in some serious problems for the responders trying to use the system) would accomplish?

 

[camlew2]

Yer they would never be able to hack into it after hearing about how the codes work etc

 

[N_Jay]

Yer they would never be able to hack into it after hearing about how the codes work etc

Why don't you take a few classes on encryption systems and get back to us on that.

 

[grem467]

Just go to every repeater and drop a carrier and dnt get busted and try and bugger up the ecryption.... only if that worked

so you think keying on the input of a public safety repeater and interfere is a good idea?? wow.. talk about ignorant

 

[rescue161]

He would have to have radios programmed to the system to do that and then they would just inhibit all of them...lol A costly adventure that would fail the minute the dispatcher noticed a dead key on all of the repeaters.

 

[WayneH]

I don't think this is really going anywhere different than any other encryption thread.

First, the encryption isn't going to be hacked. Forget about what any retard says, it will NOT happen any time soon or within the next 30 years. Look at how long analog 12kbit encryption has lasted without any realistic 3rd party encryption. It may be able to be done once but anyone still running analog encryption will be rotating their key as they should be.

Want to listen to the PD? It's actually possible but you may not like it. Go to work for them or go to work for their radio shop. Problem solved. Those are your only options.

Also, I wouldn't bother interfering with the system. Trunking isn't like conventional radio. The system knows and logs it. All it takes is an admin to notice it.

-CLOSED-