Add getrandom feature

x-wing/Cargo.toml

@@ -12,6 +12,11 @@ homepage = "https://github.com/RustCrypto/KEMs/tree/master/ml-kem"
 repository = "https://github.com/RustCrypto/KEMs"
 categories = ["cryptography", "no-std"]
 keywords = ["crypto", "x-wing", "xwing", "kem", "post-quantum"]
+exclude = ["src/test-vectors.json"]
+
+
+[features]
+getrandom = ["rand_core/getrandom"]
 
 [lints.clippy]
 pedantic = "warn"                                 # Be pedantic by default

x-wing/src/lib.rs

@@ -115,6 +115,12 @@ pub struct DecapsulationKey {
 }
 
 impl DecapsulationKey {
+    /// Generate a new `DecapsulationKey` using `OsRng`
+    #[cfg(feature = "getrandom")]
+    pub fn generate_rng() -> DecapsulationKey {
+        Self::generate(&mut rand_core::OsRng)
+    }
+
     /// Generate a new `DecapsulationKey` using the provided RNG
     pub fn generate(rng: &mut impl CryptoRngCore) -> DecapsulationKey {
         let sk = generate(rng);
@@ -211,6 +217,12 @@ impl From<&[u8; 1120]> for Ciphertext {
     }
 }
 
+/// Generate a X-Wing key pair using a the `OsRng`
+#[cfg(feature = "getrandom")]
+pub fn generate_key_pair_rng() -> (DecapsulationKey, EncapsulationKey) {
+    generate_key_pair(&mut rand_core::OsRng)
+}
+
 /// Generate a X-Wing key pair
 pub fn generate_key_pair(rng: &mut impl CryptoRngCore) -> (DecapsulationKey, EncapsulationKey) {
     let sk = DecapsulationKey::generate(rng);