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Merged
merged 2 commits into from
May 14, 2018
Merged

Support wasm32-unknown-emscripten #444

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41dc39b
Ignore stdweb feature with emscripten
pitdicker May 12, 2018
36b6cff
Add note about Emscripten OsRng source
pitdicker May 12, 2018
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2 changes: 1 addition & 1 deletion src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -188,7 +188,7 @@
#[cfg(feature="serde1")] extern crate serde;
#[cfg(feature="serde1")] #[macro_use] extern crate serde_derive;

#[cfg(all(target_arch = "wasm32", feature = "stdweb"))]
#[cfg(all(target_arch="wasm32", not(target_os="emscripten"), feature="stdweb"))]
#[macro_use]
extern crate stdweb;

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7 changes: 5 additions & 2 deletions src/rngs/os.rs
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Expand Up @@ -37,8 +37,11 @@ use rand_core::{CryptoRng, RngCore, Error, impls};
/// otherwise from `/dev/urandom`.
/// - macOS, iOS: calls `SecRandomCopyBytes`.
/// - Windows: calls `RtlGenRandom`.
/// - WASM: calls `window.crypto.getRandomValues` in browsers,
/// and in Node.js `require("crypto").randomBytes`.
/// - WASM (with `stdweb` feature): calls `window.crypto.getRandomValues` in
/// browsers, and in Node.js `require("crypto").randomBytes`.
/// - Emscripten: reads from emulated `/dev/urandom`, which maps to the same
/// interfaces as `stdweb`, but falls back to the insecure `Math.random()` if
/// unavailable.
/// - OpenBSD: calls `getentropy(2)`.
/// - FreeBSD: uses the `kern.arandom` `sysctl(2)` mib.
/// - Fuchsia: calls `cprng_draw`.
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