fix: add dummy randombytes implementation

build.rs

@@ -34,7 +34,6 @@ fn main() {
     let bindings_level2 = bindgen::Builder::default()
         .header(headers_path_str)
         .clang_arg("-DMLKEM_K=2")
-        .blocklist_function("PQCP_MLKEM_NATIVE_MLKEM512_keypair|PQCP_MLKEM_NATIVE_MLKEM512_enc")
         .parse_callbacks(Box::new(bindgen::CargoCallbacks::new()))
         .generate()
         .expect("Unable to generate bindings");
@@ -42,7 +41,6 @@ fn main() {
     let bindings_level3 = bindgen::Builder::default()
         .header(headers_path_str)
         .clang_arg("-DMLKEM_K=3")
-        .blocklist_function("PQCP_MLKEM_NATIVE_MLKEM768_keypair|PQCP_MLKEM_NATIVE_MLKEM768_enc")
         .parse_callbacks(Box::new(bindgen::CargoCallbacks::new()))
         .generate()
         .expect("Unable to generate bindings");
@@ -50,7 +48,6 @@ fn main() {
     let bindings_level4 = bindgen::Builder::default()
         .header(headers_path_str)
         .clang_arg("-DMLKEM_K=4")
-        .blocklist_function("PQCP_MLKEM_NATIVE_MLKEM1024_keypair|PQCP_MLKEM_NATIVE_MLKEM1024_enc")
         .parse_callbacks(Box::new(bindgen::CargoCallbacks::new()))
         .generate()
         .expect("Unable to generate bindings");

src/lib.rs

@@ -6,6 +6,23 @@ mod unsafe_bindings_level2;
 mod unsafe_bindings_level3;
 mod unsafe_bindings_level4;
 
+/// .
+///
+/// # Panics
+///
+/// Panics always.
+///
+/// # Safety
+///
+/// .
+#[no_mangle]
+pub unsafe extern "C" fn randombytes(
+    _buf: *mut u8,
+    _len: core::ffi::c_longlong,
+) -> core::ffi::c_int {
+    panic!("");
+}
+
 #[derive(Error, Debug)]
 pub enum MLKEMNativeError {
     #[error("the CSRNG failed due to insufficent entropy")]