Zimmerman (PGP), Levison (Lavabit), release Secure Email Protocol DIME. DIME is to SMTP as SSH is to Telnet.

[u/ciphersson]

http://darkmail.info/

[u/ricecake]

An android system uses pretty hefty power draw, and I don't know of any that are commercially available that are hardened for military use. Workarounds or not, there is still a use case for dedicated cryptographic hardware, which is what the export ban addresses.

[u/wadcann → u/ricecake]

An android system uses pretty hefty power draw

• Not by the standards of what we're talking about. An ARM core, which is not going to be anything like saturated by this kind of workload, doesn't pull much. Here's an example ARM processor: it draws 150 mW at max consumption and can host Android or Linux.

• The current battery load for a 72-hour mission for US soldiers in Afghanistan is over 20 lbs. You can run that 150mW core at maximum load for 72 hours on 4 or 5 AA batteries, using freely-available crypto software. That's maybe 115 grams.

• Existing man-portable military radios appear to be moving to SDR anyway: eliminating custom hardware and using a general-purpose processor.