The SOC in a raspi is probably no worse than the rest, but consider that the natural entropy available (for Crypto) to a SOC is much lower than a multi-component system like a laptop or tower. The Raspi 1.xx has an onboard entropy chip you can enable, if you trust it, and there'll be a new device in /dev you can read raw entropy from. Write that to /dev/random to seed the system pool and use /dev/urandom as your actual source.

Personally I'd draw from several sources to feed /dev/random: an internal hash-chain (quick Python script) (re)seeded on a password and urandom periodically, the hardware entropy generator, Ubuntu's seed server.. don't trust one source, mash them up once a minute/hour and feed them to /dev/random.

On 15 April 2015 09:18:11 GMT+01:00, Edd thompson <blukami@gmail.com> wrote:

I am saving my pennies to build my pc that will be relatively secure and private.
Raspberry pi b+
Cell shield add on for above
Prepaid sim (paid in cash)
Bluetooth stick
Wifi stick (looking for one with least security issues but they all seem to be in bed with Al-Shaitain)
Lcd screen
Sdr transceiver

Punch the security holes that you see or possibly give me better substitutes
Thanks for your time
TTFN

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