Use getrandom directly

Cargo.toml

@@ -36,8 +36,7 @@ no-panic = "0.1"
 # allows avoiding utf8 for SSH identifier names
 ascii = { version = "1.0", default-features = false }
 
-rand = { version = "0.8", default-features = false, features = ["getrandom"] }
-rand_core = { version = "0.6", default-features = false }
+getrandom = "0.2"
 
 ctr = { version = "0.9", features = ["zeroize"] }
 aes = { version = "0.8", features = ["zeroize"] }

src/random.rs

@@ -4,17 +4,9 @@ use {
     log::{debug, error, info, log, trace, warn},
 };
 
-use rand::{RngCore, Rng, CryptoRng};
-use core::num::Wrapping;
-
-pub type SunsetRng = rand::rngs::OsRng;
-
 pub fn fill_random(buf: &mut [u8]) -> Result<(), Error> {
-    // TODO: can this return an error?
-    let mut rng = SunsetRng::default();
-    rng.try_fill_bytes(buf)
-        .map_err(|e| {
-            debug!("RNG failed: {e:?}");
-            Error::msg("RNG failed")
-        })
+    getrandom::getrandom(buf)
+    .map_err(|_| {
+        Error::msg("RNG failed")
+    })
 }