Fabio Alessandrelli 6b5634b96a [OS/Crypto] Add get_entropy to OS. ...

Implemented via `BCryptGenRandom` on Windows.
Implemented via `getentropy` syscall when available.
Implemented via `/dev/urandom` device as a fallback.

The `/dev/urandom` fallback can be disabled via the `NO_URANDOM` build
flag.

Note: The HTML5 version relies on emscripten file system urandom
device which itself uses the Crypto API when available or the plain
old not crypto-safe `Math.random()` otherwise.

Restore get_entropy.

2022-02-14 10:45:50 +01:00

4.8 KiB

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