Sha256: 50f70136fe46f9fe9a728aa7881cdc8144f430620168cf42519c2666a8edc11f
Contents?: true
Size: 778 Bytes
Versions: 8
Compression:
Stored size: 778 Bytes
Contents
//! Implementation for ESP-IDF
use crate::Error;
use core::{ffi::c_void, mem::MaybeUninit};
extern "C" {
fn esp_fill_random(buf: *mut c_void, len: usize) -> u32;
}
pub fn getrandom_inner(dest: &mut [MaybeUninit<u8>]) -> Result<(), Error> {
// Not that NOT enabling WiFi, BT, or the voltage noise entropy source (via `bootloader_random_enable`)
// will cause ESP-IDF to return pseudo-random numbers based on the voltage noise entropy, after the initial boot process:
// https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/system/random.html
//
// However tracking if some of these entropy sources is enabled is way too difficult to implement here
unsafe { esp_fill_random(dest.as_mut_ptr().cast(), dest.len()) };
Ok(())
}
Version data entries
8 entries across 8 versions & 1 rubygems