A thumb-drive size dongle using a USB serial converter, an ATTiny45 micro, and the entropy-lib library, which uses the micro's "watchdog timer's natural jitter to produce a reliable stream of true random numbers. Unlike other methods currently available, this library requires no external hardware and produces a considerably more random number stream than methods based upon the technique of reading an unconnected analog pin."
http://forums.hackaday.com/viewtopic.php?f=3&t=4189 The author notes, "The TRNG dongle is quite slow when it comes to generation of random numbers. The Entropy.random() call waits for some time till enough entropy is gathered. It will produce around two 32bit random numbers a second. It is not much but it is enough for my needs. If you are looking for a quite inexpensive but much more performant solution, check the NeuG dongle based on a STM32 http://www.seeedstudio.com/wiki/FST-01"; -Tom _______________________________________________ Hardwarehacking mailing list [email protected] http://lists.blu.org/mailman/listinfo/hardwarehacking
