Am Dienstag, 5. November 2013, 13:25:40 schrieb Stephan Mueller:
Hi Pavel,
>Am Montag, 4. November 2013, 00:32:07 schrieb Pavel Machek:
>>But they usually _do_ have RTC or other clock, not driven by CPU
>>oscilator. Good.
>>
>>What about just
>>
>>while (!enough_entropy) {
>>
>> cur_time = read_rtc();
>> simulated_tsc = 0;
>> while (cur_time == read_rtc())
>>
>> simulated_tsc++;
>>
>> gain_entropy_from(simulated_tsc)
>>
>>}
>
>That is an interesting piece of code -- what would you do in the
>gain_entropy_from function?
Please disregard my question.
I plugged that idea into my current Jitter RNG processing and disabled
the other jitter measurements to get a clear, isolated picture.
The result is also a white noise! And it is even quite fast.
That means with this approach, even another noise source is available
that I could combine with the jitter measurements.
I will have to perform more tests on that noise source. But the smoke
test is already quite interesting.
Ciao
Stephan
--
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
