[Cryptography] Vulnerabilities (in theory and in practice) in P25 two-way radios

[Matt Blaze]

Our (Sandy Clark, Travis Goodspeed, Perry Metzger, Zachary Wasserman, Kevin Xu and me) Usenix Security paper on vulnerabilities in the P25 two-way radio system (used by public safety agencies in the US and elsewhere) is out today.

See

   http://www.crypto.com/papers/p25sec.pdf

for the paper (pdf format) and

   http://www.crypto.com/p25

for a summary of mitigations.

-matt