I\'m considering the use of an Arduino in a project I\'m on but a question is still open.
The Arduino will be collecting data and, once in a while, will send them to
You could look at this which is a PIC32 Arduino compatible http://www.digilentinc.com/Products/Detail.cfm?NavPath=2,892,893&Prod=CHIPKIT-UNO32
the best you can use in arduino is xxtea encryption. is fast but not super secure
Check out the Microchip PIC 18x and 24x series uCs. http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2505¶m=en535724
If you are looking for a heavy duty micro-platform, check out "Raspberry Pi"