Etienne Champetier <champetier.etie...@gmail.com> [2019-03-15 10:46:09]:
Hi, > Just a side note, on first boot we save a random seed using getrandom() > https://github.com/openwrt/openwrt/blob/master/package/base-files/files/etc/init.d/urandom_seed > https://github.com/openwrt/openwrt/blob/master/package/base-files/files/sbin/urandom_seed > > And we restore it in preinit > https://github.com/openwrt/openwrt/blob/master/package/base-files/files/lib/preinit/81_urandom_seed Well, it seems like we're writing the /etc/urandom.seed to the /dev/urandom which doesn't help with initialization of CRNG, just seeding the /dev/urandom. > So even if kernel PRNG is considered not initialized, in reality it > is, so starting from second boot we are ~ok Nope, see bellow. 1st boot: [ 3.944674] urandom-seed: Seed file not found (/etc/urandom.seed) [ 75.120166] random: fast init done [ 140.917418] random: crng init done 2nd boot: [ 3.938414] urandom-seed: Seeding with /etc/urandom.seed [ 22.440981] random: fast init done [ 135.737309] random: crng init done -- ynezz _______________________________________________ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
