import std/[times, random], bearssl/rand, libp2p/crypto/crypto ## Randomization proc randomize*() = ## Initializes the default random number generator with the given seed. ## From: https://nim-lang.org/docs/random.html#randomize,int64 let now = getTime() randomize(now.toUnix() * 1_000_000_000 + now.nanosecond) ## RNG # Copied from here: https://github.com/status-im/nim-libp2p/blob/d522537b19a532bc4af94fcd146f779c1f23bad0/tests/helpers.nim#L28 type Rng = object rng: ref HmacDrbgContext # Typically having a module variable is considered bad design. This case should # be considered as an exception and it should be used only in the tests. var rngVar: Rng proc getRng(): ref HmacDrbgContext = # TODO: if `rngVar` is a threadvar like it should be, there are random and # spurious compile failures on mac - this is not gcsafe but for the # purpose of the tests, it's ok as long as we only use a single thread {.gcsafe.}: if rngVar.rng.isNil(): rngVar.rng = crypto.newRng() rngVar.rng template rng*(): ref HmacDrbgContext = getRng()