47a59dda25
* Add `getrandom_uninit(dest: &mut [MaybeUninit<u8>]) -> ...`. Add a public API for filling an `&mut [MaybeUninit<u8>]`. This will primarily serve as the building block for more typeful APIs for constructing random arrays. Increase the MSRV to 1.36, as `MaybeUninit` was added in that release. Fixes #226. * Revert testing changes Signed-off-by: Joe Richey <joerichey@google.com> * Allow rdrand tests to work with new implementation Signed-off-by: Joe Richey <joerichey@google.com> * Add Additional benchmarks and buffer size Signed-off-by: Joe Richey <joerichey@google.com> * Use pointer casts instead of transmute Signed-off-by: Joe Richey <joerichey@google.com> * Avoid initializing the buffer in `getrandom_uninit` benchmarks. * Benchmarks: Consume the result in `black_box`. Signed-off-by: Joe Richey <joerichey@google.com> Co-authored-by: Joe Richey <joerichey@google.com>
2.2 KiB
getrandom
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 1.36.0 or later.
License
The getrandom library is distributed under either of
at your option.