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ringsignature at riseup.net ringsignature at riseup.netOn 2017-10-06 16:57, Max wrote: > GRND_RANDOM let us select randomness source. > GRND_NONBLOCK let us control blocking behavior. After rereading the relevant documentation, I realize that I misunderstood one critical point regarding GRND_NONBLOCK. The critical difference is that GRND_NONBLOCK controls not only blocking behavior, it also ensures that in the case of the system not being properly seeded, it fails closed by immediately returning -1 without outputting any random bytes. I apologize for completely missing this detail. It is of course the case that you are correct and if blocking is a problem, it is logical to set GRND_NONBLOCK and to handle the error case, especially by terminating. That is indeed a critical error and there should be no output. Happy Hacking, RS