DSD+ DMR encrypt decoding

[hamtrektng]

Completely irrelevant

In what way is this not relevant?

 

[brandon]

I seem to remember the DSD+ author posting here on RR that there was already a version developed for encryption, but it would not be released to the general public. It was years ago and I really don't care to look it up, but I am sure the post is still here in the forums.

 

[DaveNF2G]

Probably posted on April 1 of that year, too. LOL.

 

[woodpecker]

As I mentioned before, basic privacy is easy to decode you just have to modify the DSD source, take the 49 bit bp key and xor that key with the 49 bit AMBE frames, every frame is xor'd with the same 49 bit key, here's a video of it in operation:-

https://youtu.be/FVyFm7GvacQ

 

[Forts]

Is this something you really want to be posting in an open forum? Or are you trying to push anyone using BP to EP?

 

[woodpecker]

Is this something you really want to be posting in an open forum? Or are you trying to push anyone using BP to EP?

The same can be done by buying a trbo radio and trying the keys, motorola include the keys so its not secure in any way.

 

[slicerwizard]

take the 49 bit bp key and xor that key with the 49 bit AMBE frames, every frame is xor'd with the same 49 bit key

BP keys are still only 8 bits long. Even EP keys are shorter than 49 bits.

 

[woodpecker]

BP keys are still only 8 bits long. Even EP keys are shorter than 49 bits.

The key stream is 49 bits long, you generate the 49 bit stream then xor it.

 

[polkaroo]

Interesting.. can you do the same with AES?

 

[woodpecker]

Interesting.. can you do the same with AES?

No.

 

[slicerwizard]

The key stream is 49 bits long

Now you're getting somewhere. Hopefully, you're done writing "the 49 bit bp key".

 

[mikewazowski]

This thread is certainly pushing the legal boundaries and since I'm not a lawyer and I suspect nobody else participating in this thread is, I'm going to err on the side of caution and close this thread.