Merge pull request #241 from stm32-rs/crypto_rng

Implement rand_core::CryptoRng for the hardware Rng

Author: korken89

src/rng.rs

@@ -4,7 +4,7 @@ use core::cmp;
 
 use crate::rcc::{Clocks, AHB2};
 use crate::stm32::RNG;
-pub use rand_core::RngCore;
+pub use rand_core::{CryptoRng, RngCore};
 
 /// Extension trait to activate the RNG
 pub trait RngExt {
@@ -110,6 +110,8 @@ impl RngCore for Rng {
     }
 }
 
+impl CryptoRng for Rng {}
+
 #[derive(Debug)]
 pub enum Error {}