mte/unikernel/duniverse/mirage-crypto/tests/test_miou_rng.ml
2025-11-11 02:07:51 +01:00

16 lines
802 B
OCaml

let () = Miou_unix.run @@ fun () ->
let rng = Mirage_crypto_rng_miou_unix.(initialize (module Pfortuna)) in
let random_num = Mirage_crypto_rng.generate 32 in
assert (String.length random_num = 32);
Printf.printf "32 bit random number: %s\n%!" (Ohex.encode random_num);
let random_num = Mirage_crypto_rng.generate 16 in
assert (String.length random_num = 16);
Printf.printf "16 bit random number: %s\n%!" (Ohex.encode random_num);
(* NOTE(dinosaure): the test below shows that [Pfortuna] is domain-safe when
run with TSan. If we use the Fortuna engine, TSan will report invalid
accesses between the domain that seeds the RNG and [dom0]. *)
for _ = 0 to 4 do
let _ = Mirage_crypto_rng.generate 16 in
Miou_unix.sleep 0.5;
done;
Mirage_crypto_rng_miou_unix.kill rng