Since the Enhanced Privacy 40 bit encryption in any XPR 4550,5550 is hackable , does using RAS add any extra layer of security from eavesdropping ?
MAX
DMR 40 bit encryption
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Re: DMR 40 bit encryption
My understanding is RAS does not add any additional level of encryption, just limits access to a repeater.
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Re: DMR 40 bit encryption
Source? Enhanced Privacy is the at the same level as ADP in the P25 world, and if it had been openly compromised there would have been a huge uproar.Max wrote:Since the Enhanced Privacy 40 bit encryption in any XPR 4550,5550 is hackable...
Re: DMR 40 bit encryption
Well, it has been compromised and i have the proof.
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Re: DMR 40 bit encryption
ADP is easy enough to crack due to the fact that the end of every P25 transmission contains known silence packets. There was a paper I read somewhere that detailed one group's efforts to crack ADP keys using captured P25 frames and it took them only a couple of days at most.
Here's the info on the paper, but for whatever reason it's restricted to paid access only. I definitely remember reading a free PDF of this paper somewhere. Oh well.
https://publications.csiro.au/rpr/pub?pid=nicta:5076
EDIT: Here's another similar presentation on the subject.
http://2011.ruxcon.org.au/assets/Presen ... slides.pdf
Bottom line is that ADP isn't very secure at all. I'm not too familiar with the TRBO encryption side of things, but there's a good chance a similar weakness exists in that department as well.
Here's the info on the paper, but for whatever reason it's restricted to paid access only. I definitely remember reading a free PDF of this paper somewhere. Oh well.
https://publications.csiro.au/rpr/pub?pid=nicta:5076
EDIT: Here's another similar presentation on the subject.
http://2011.ruxcon.org.au/assets/Presen ... slides.pdf
Bottom line is that ADP isn't very secure at all. I'm not too familiar with the TRBO encryption side of things, but there's a good chance a similar weakness exists in that department as well.
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Re: DMR 40 bit encryption
Those papers are 6 years old and only deal in hypotheticals, which is a whole other ballgame than openly compromised and decryptable in real time as OP claims.
Re: DMR 40 bit encryption
Based on your posts in the trbo forums I'm gonna submit your credibility is suspect at best. Post the proof or stop talking aboutMax wrote:Well, it has been compromised and i have the proof.
Re: DMR 40 bit encryption
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