[Cryptography] Police want encrypted radios

[Howard Chu]

Tom Mitchell wrote:
> On Mon, May 28, 2018 at 4:25 PM, Michael Nelson via cryptography 
> <cryptography at metzdowd.com <mailto:cryptography at metzdowd.com>> wrote:
> 
>     On May 17, 2018,  John Gilmore < gnu at toad.com <http://toad.com>> wrote:
> 
>      >  Do the cops' radios have backdoors built in to them?
> 
>     The articles I skimmed were pretty lowbrow

The APCO-25 digital radio spec has been around for quite some time. I used to 
muck with them using GnuRadio. All of this stuff is pretty well documented by 
now. Seems like it didn't work too well, and a lot of districts trying to 
deploy encryption had to rollback to cleartext.

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   -- Howard Chu
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