Fixing encryption vunerabilities

[Engineereric]

Has anyone looked at applying current encryption best practice to the DMR encryption mode as it currently has vulnerabilities?

[jnagorka]

Do you have any info/references to those vulnerabilities?

[didotb]

Please specify which vulnerabilities do you mean?
Based on the Motorola patents I've read couple of months ago, most "vulnerabilities" you see are implementation issues, not at all related to the specs.

So your encryption security relies solely on which manufacturer (or in the case of baofeng, tyt, and hytera; which model of radio) you're using.
So far, I've only really known foolproof implementation on hardware based encryption, something that cannot be "accidentally" modified by the firmware you're flashing.

Since you're making this discussion on the DM32-UV repo, I'm guessing you're also curious about the encryption on this radio. It was proven countless times that the AES256 fits the standard of Motorola as MOTOTRBO radios can decode the audio using the same keys. It also was verified by the english translation of the HR_C7000 technical document leaked somewhere.

Lastly, to answer your question on the "best practices"; If you don't trust the radio you're using, either do a deep research on the hardware on it, or switch over to a more trusted radio. Otherwise, treat it as if it's an analog radio. Small bursts of data, over different frequencies that nobody can easily predict.