xous-core/imports/getrandom/README.md
bunnie e2026318b6 commit the getrandom fork, which is vendored into the kernel
we have to keep all the targets around, because hosted mode
also uses rand, which won't resolve correctly unless we also
have the host's target available, unfortunately

(trust me, tried to do a version stripped down just for xous...)
2022-05-29 02:48:05 +08:00

2.2 KiB

getrandom

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A Rust library for retrieving random data from (operating) system source. It is assumed that system always provides high-quality cryptographically secure random data, ideally backed by hardware entropy sources. This crate derives its name from Linux's getrandom function, but is cross platform, roughly supporting the same set of platforms as Rust's std lib.

This is a low-level API. Most users should prefer using high-level random-number library like rand.

Usage

Add this to your Cargo.toml:

[dependencies]
getrandom = "0.2"

Then invoke the getrandom function:

fn get_random_buf() -> Result<[u8; 32], getrandom::Error> {
    let mut buf = [0u8; 32];
    getrandom::getrandom(&mut buf)?;
    Ok(buf)
}

For more information about supported targets, entropy sources, no_std targets, crate features, WASM support and Custom RNGs see the getrandom documentation and getrandom::Error documentation.

Minimum Supported Rust Version

This crate requires Rust 1.34.0 or later.

License

The getrandom library is distributed under either of

at your option.