fix: rmv comments and add acknowledgement

src/dsa/rpo_falcon512/keys/secret_key.rs

@@ -18,8 +18,6 @@ use num::{Complex, Zero};
 use num_complex::Complex64;
 use rand::{rngs::OsRng, Rng, RngCore};
 
-//#[cfg(all(feature = "std", feature = "std_rng"))]
-
 // CONSTANTS
 // ================================================================================================
 
@@ -66,7 +64,6 @@ impl SecretKey {
     pub fn new() -> Self {
         let mut seed: [u8; 32] = [0; 32];
         OsRng.fill_bytes(&mut seed);
-        //let rng: rand::rngs::StdRng = rand::SeedableRng::from_seed(seed);
         Self::with_rng(&mut OsRng)
     }
 

src/dsa/rpo_falcon512/math/mod.rs

@@ -1,3 +1,9 @@
+//! Contains different structs and methods related to the Falcon DSA.
+//!
+//! It uses and acknowledges the work in:
+//!
+//! 1. The [reference](https://falcon-sign.info/impl/README.txt.html) implementation by Thomas Pornin.
+//! 2. The [Rust](https://github.com/aszepieniec/falcon-rust) implementation by Alan Szepieniec.
 use super::MODULUS;
 use alloc::{string::String, vec::Vec};
 use core::ops::MulAssign;

src/dsa/rpo_falcon512/signature.rs

@@ -358,15 +358,15 @@ fn decompress_signature(input: &[u8]) -> Result<Polynomial<FalconFelt>, FalconSe
 // TESTS
 // ================================================================================================
 
-#[cfg(all(test, feature = "std", feature = "std_rng"))]
+#[cfg(test)]
 mod tests {
     use super::{super::SecretKey, *};
-    use rand::thread_rng;
+    use rand::rngs::OsRng;
 
     #[test]
     fn test_serialization_round_trip() {
         let key = SecretKey::new();
-        let mut rng = thread_rng();
+        let mut rng = OsRng;
         let signature = key.sign(Word::default(), &mut rng);
         let serialized = signature.to_bytes();
         let deserialized = Signature::read_from_bytes(&serialized).unwrap();