Hi, Comments below. > Using Fedora 29 on Raspberry Pi 3 I seem to have a problem using rndg: > > uname -a > Linux replica.blabla.bla 4.18.16-300.fc29.aarch64 #1 SMP Sat Oct 20 23:12:22 UTC 2018 aarch64 aarch64 aarch64 GNU/Linux > cat /etc/redhat-release > Fedora release 29 (Twenty Nine) > > rngd is running: > ps -ef | grep rng > root 4710 4409 13 10:57 pts/1 00:00:47 rngd -f -r /dev/hwrng -o /dev/random > > The module to support bcm2835 hardware is loaded: > lsmod | grep rng > bcm2835_rng 16384 0 > > However, rng is painfully slow: > > time rngtest -c 10 < /dev/random > rngtest 6 > Copyright (c) 2004 by Henrique de Moraes Holschuh > This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. > > rngtest: starting FIPS tests... > rngtest: bits received from input: 200032 > rngtest: FIPS 140-2 successes: 10 > rngtest: FIPS 140-2 failures: 0 > rngtest: FIPS 140-2(2001-10-10) Monobit: 0 > rngtest: FIPS 140-2(2001-10-10) Poker: 0 > rngtest: FIPS 140-2(2001-10-10) Runs: 0 > rngtest: FIPS 140-2(2001-10-10) Long run: 0 > rngtest: FIPS 140-2(2001-10-10) Continuous run: 0 > rngtest: input channel speed: (min=2.201; avg=5.458; max=380.585)Kibits/s > rngtest: FIPS tests speed: (min=28.132; avg=28.328; max=28.468)Mibits/s > rngtest: Program run time: 35792670 microseconds > > real 0m35.801s > user 0m0.001s > sys 0m0.071s > > > Running CentOS 7.5 on an older Raspberry Pi 2 will do much much faster: > > ps -ef | grep rngd > root 14024 1 1 10:54 ? 00:00:14 /sbin/rngd -f -r /dev/hwrng -o /dev/random > > > time rngtest -c 10 < /dev/random > rngtest 5 > Copyright (c) 2004 by Henrique de Moraes Holschuh > This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. > > rngtest: starting FIPS tests... > rngtest: bits received from input: 200032 > rngtest: FIPS 140-2 successes: 10 > rngtest: FIPS 140-2 failures: 0 > rngtest: FIPS 140-2(2001-10-10) Monobit: 0 > rngtest: FIPS 140-2(2001-10-10) Poker: 0 > rngtest: FIPS 140-2(2001-10-10) Runs: 0 > rngtest: FIPS 140-2(2001-10-10) Long run: 0 > rngtest: FIPS 140-2(2001-10-10) Continuous run: 0 > rngtest: input channel speed: (min=135.793; avg=166.586; max=191.200)Kibits/s > rngtest: FIPS tests speed: (min=22.076; avg=22.243; max=22.334)Mibits/s > rngtest: Program run time: 1181718 microseconds > > real 0m1.192s > user 0m0.002s > sys 0m0.141s > > Whatś happening here? It seems like the bcm2835_rng is not picked up; despite the module is loaded. So running the above test on my RPi3 with ARMv7 (so 32 bit mode) I see the following output that it detects and is using the HW RNG: # rngd -l Entropy sources that are available but disabled 4: NIST Network Entropy Beacon Available and enabled entropy sources: 0: Hardware RNG Device 5: JITTER Entropy generator And the test is running faster for me than your one on CentOS: # time rngtest -c 10 < /dev/random rngtest 6 Copyright (c) 2004 by Henrique de Moraes Holschuh This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. rngtest: starting FIPS tests... rngtest: bits received from input: 200032 rngtest: FIPS 140-2 successes: 10 rngtest: FIPS 140-2 failures: 0 rngtest: FIPS 140-2(2001-10-10) Monobit: 0 rngtest: FIPS 140-2(2001-10-10) Poker: 0 rngtest: FIPS 140-2(2001-10-10) Runs: 0 rngtest: FIPS 140-2(2001-10-10) Long run: 0 rngtest: FIPS 140-2(2001-10-10) Continuous run: 0 rngtest: input channel speed: (min=2.430; avg=6.029; max=444.518)Kibits/s rngtest: FIPS tests speed: (min=51.690; avg=53.941; max=54.967)Mibits/s rngtest: Program run time: 32397649 microseconds real 0m32.408s user 0m0.004s sys 0m0.056s I wonder if this is an issue with aarch64, the CentOS image on the RPi2 is obviously ARMv7, could you test a Fedora 29 ARMv7 image on the Raspberry Pi 3 to see if that might be the issue? Peter _______________________________________________ arm mailing list -- arm@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to arm-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/arm@xxxxxxxxxxxxxxxxxxxxxxx
