Hi Stephan, I haven't had a chance to look at your paper in detail, yet, but a quick scan has found a huge red flag for me that puts the rest of your analysis in severe doubt for me. You say that you got really good results and perfect statistical entropy on a number of platforms, including on an MIPS embedded system. You also say that you are harvesting jitter by using get_cycles() yes? Well, on the MIPS platform, here is the definition of get_cycles: static inline cycles_t get_cycles(void) { return 0; } So if you are getting great entropy results when in effect you couldn't possibly be harvesting any jitter at all, then something is really, Really, REALLY wrong with your tests. One might be that you are just getting great statistical results because of the whitening step. This is why I have very little faith in statistical tests of randomness, given that they will return perfect results for the following "random number generator" AES_ENCRYPT(i++, NSA_KEY) Regards, - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html