RC4 decrypted text messages - with key

[Wolff8]

Absolutely amazing project. Thank you very much.

I would be extremely happy if option to decrypt DMR RC40 motorola encrypted text messages with key could be implemented someday. Is it possible and would you mind to do it?

Thanks and good luck with this project.

[lwvmobile]

I'll look into it at some point, and see what can be done, but same as #186 really, just having to decrypt the pdu as well. I wouldn't hold my breathe for it to occur anytime soon, though, if at all. Dealing with different vendor formats for SMS like messages that aren't documented in ETSI manuals might be difficult, not to mention, anytime I request wav files where text messages occur with known text in them (not including encryption) nobody can actually seem to supply those, so makes it a bit difficult to work out their delivery format.

[Wolff8]

Thanks. I can send you raw audio of some (RC4) encrypred text messages bursts.

[lwvmobile]

That'll be fine. If you capture some wav files, just zip them up and upload them to https://ufile.io/

You can either post the link here, or if you'd prefer, just message me on the radio reference forums if you don't want everybody else to download your samples and prefer some privacy on it.

[Wolff8]

I have the recordings, but I can’t open your profile on RadioReference, it doesn’t allow me. Can you send me some other contact info?

[lwvmobile]

What's your username over there, I'll message you if you can't message me, my username is literally the same here as it is over there. If you are a new user there, its not going to let you send messages to people until you make at least 5 forum posts, that's the usual newbie gate to prevent spam anyways.

[Wolff8]

That is the thing. I literally just created account few days ago. So what’s the plan then?

[lwvmobile]

Well, that's why I asked what your username was on RR. Even though you can't send me a message, I can initiate a message with you and then we can converse. So, what is your username over there?

[francisuk1989]

@Wolff8 you can send the WAV to https://ufile.io and then send here. :)

[Wolff8]

wolf18 is my username. Sorry for the delay.

[lwvmobile]

I send a message to you over there on RR to the username wolf18.

[craftbyte]

@lwvmobile the TRBO ones are implemented here: https://github.com/pboyd04/Moto.Net, might be of help. There is also https://github.com/rick51231/node-dmr-lib which I think has even more protocols for TRBO. Tera is mostly on https://github.com/DSheirer/sdrtrunk/tree/master/src/main/java/io/github/dsheirer/module/decode/ip.