DSDPlus encryption type?

[lkas]

Using dsd fastlane I observed a freq with what appears to be two different encryption types, One appears to be motorola BP and i think the other one is hytera, Why would there be two showing? The signal i receive is very strong. I tried posting this in the previous custom firmware thread that i have posted in before but for some reason i am gettting a message "You have insufficient privileges to reply here."

16:05:37 Enc Group call; TG=5000 RID=2026 Slot=1 Alg=BP 1s
2025/01/17 16:05:40 Enc Group call; TG=5000 RID=2014 Slot=1 Alg=EP/RC4 KeyID=4 7s
2025/01/17 16:05:48 Enc Group call; TG=5000 RID=2026 Slot=1 Alg=EP/RC4 KeyID=4 3s

 

[GTR8000]

One appears to be motorola BP and i think the other one is hytera

One is Basic Privacy, the other is Enhanced Privacy aka RC4 aka ARC4 aka ADP aka 40-bit...not "Hytera".

Anyway, I suspect it was just a decode error, happens even with strong signals. Sometimes signals can be too strong, in fact.

You need to figure out if what you saw in DSD+ is consistently happening, or if you're basing it off a single instance of seeing it.

 

[lkas]

i am seeing both popping up regularly

 

[GTR8000]

Well if you always see the BP entry immediately prior to the EP entry, then it's probably just a DSD+ quirk. Maybe it first assumes BP until it can determine for certain that it's actually EP, and then the second message pops up. Who knows, email the DSD+ author, but this (Uniden Tavern) is also not the correct forum for asking a question about DSD+, which is probably why your first post was nuked in the other thread (it was there for a little while, gone now, appropriately).

 

[RaleighGuy]

i am seeing both popping up regularly

Your PPM might be off look at the top of the DSD Window very top line on the right and see if it says HIGHPPMerr

 

[TheButcher]

Most certainly EP. The BP thing comes up erroneously some times...

 

[slicerwizard]

BP shows up when the voice header service options indicate encryption in use but the PI header isn't seen/decoded.

EP/RC4/AES is displayed when the PI Header is present and decoded.

 

[SignalPatcher]

Press R and record it. Then post the sample here.

 

[lkas]

Press R and record it. Then post the sample here.

I will try and get a sample. There is not much conversation so it can go a hour or so before i pick anything up.

 

[slicerwizard]

What's the point? It's obviously 40 bit enhanced privacy.

 

[GTR8000]

The question was asked and answered, the big mystery has been solved, there's no point in posting "samples".