rand_os/src/fuchsia.rs

// Copyright 2018 Developers of the Rand project.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

//! Implementation for Fuchsia Zircon

extern crate fuchsia_cprng;

use rand_core::Error;
use super::OsRngImpl;

#[derive(Clone, Debug)]
pub struct OsRng;

impl OsRngImpl for OsRng {
    fn new() -> Result<OsRng, Error> { Ok(OsRng) }

    fn fill_chunk(&mut self, dest: &mut [u8]) -> Result<(), Error> {
        fuchsia_cprng::cprng_draw(dest);
        Ok(())
    }

    fn method_str(&self) -> &'static str { "cprng_draw" }
}