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Random numbers for embedded devices

Random numbers for embedded devices

Posted Jul 21, 2012 8:38 UTC (Sat) by PaXTeam (guest, #24616)
Parent article: Random numbers for embedded devices

concerned/interested readers might want to check out the latent_entropy plugin featured in the latest PaX patch. the idea is very simple: each basic block of boot-only functions is instrumented to compute a random function (based on add/xor/rol, hi Halvar :) whose output is then fed into the input/nonblocking pools after each initcall. tests show that even an allnoconfig amd64 kernel under qemu produces a few bits of entropy. at this point i'm interested in real field tests with embedded systems, so feel free to contribute :).


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