fix bug in kyber

previous commit introduced a bug in Barrett reduction

src/kem/kyber/common/reduce.c

@@ -35,9 +35,8 @@ int16_t kyber_montgomery_reduce(int32_t a) {
 * Returns:     integer in {0,q} congruent to a modulo q.
 **************************************************/
 int16_t kyber_barrett_reduce(int16_t a) {
+    int16_t t;
     static const int32_t v = 20159;
-    int32_t t;
-    t = v*a;
-    t >>= 26;
-    return a - ((int16_t)t)*KYBER_Q;
+    t  = ((v * a) + (1 << 25)) >> 26;
+    return a - (t*KYBER_Q);
 }

src/rustapi/pqc-sys/src/bindings.rs

@@ -257,7 +257,17 @@ pub const PQC_ALG_KEM_HQCRMRS128: ::std::os::raw::c_uint = 16;
 pub const PQC_ALG_KEM_HQCRMRS192: ::std::os::raw::c_uint = 17;
 pub const PQC_ALG_KEM_HQCRMRS256: ::std::os::raw::c_uint = 18;
 pub const PQC_ALG_KEM_SIKE434: ::std::os::raw::c_uint = 19;
-pub const PQC_ALG_KEM_MAX: ::std::os::raw::c_uint = 20;
+pub const PQC_ALG_KEM_MCELIECE348864: ::std::os::raw::c_uint = 20;
+pub const PQC_ALG_KEM_MCELIECE460896: ::std::os::raw::c_uint = 21;
+pub const PQC_ALG_KEM_MCELIECE6688128: ::std::os::raw::c_uint = 22;
+pub const PQC_ALG_KEM_MCELIECE6960119: ::std::os::raw::c_uint = 23;
+pub const PQC_ALG_KEM_MCELIECE8192128: ::std::os::raw::c_uint = 24;
+pub const PQC_ALG_KEM_MCELIECE348864F: ::std::os::raw::c_uint = 25;
+pub const PQC_ALG_KEM_MCELIECE460896F: ::std::os::raw::c_uint = 26;
+pub const PQC_ALG_KEM_MCELIECE6688128F: ::std::os::raw::c_uint = 27;
+pub const PQC_ALG_KEM_MCELIECE6960119F: ::std::os::raw::c_uint = 28;
+pub const PQC_ALG_KEM_MCELIECE8192128F: ::std::os::raw::c_uint = 29;
+pub const PQC_ALG_KEM_MAX: ::std::os::raw::c_uint = 30;
 pub type _bindgen_ty_2 = ::std::os::raw::c_uint;
 #[repr(C)]
 #[derive(Debug, Copy, Clone)]

src/rustapi/pqc-sys/src/build.rs

@@ -4,7 +4,7 @@ extern crate bindgen;
 
 fn main() {
 	let dst = Config::new("../../../")
-		.profile("Release")
+		.profile("Debug")
 		.very_verbose(true)
         .build();
 

test/katrunner/src/main.rs

@@ -226,11 +226,14 @@ const KATS: &'static[Register] = &[
     //REG_SIGN!(PQC_ALG_SIG_RAINBOWIIICLASSIC),
 ];
 
-fn execute(kat_dir: String, thc: usize) {
+fn execute(kat_dir: String, thc: usize, file_filter: &str) {
     // Can't do multi-threads as DRBG context is global
     let pool = ThreadPool::new(thc);
     for k in KATS.iter() {
         let tmp = kat_dir.clone();
+        if !file_filter.is_empty() && !k.kat.kat_file.contains(file_filter) {
+            continue;
+        }
         pool.execute(move || {
             DRBGV.lock().unwrap()
                 .insert(thread::current().id(), DrbgCtx::new());
@@ -266,8 +269,15 @@ fn main() {
         None => 4 /* by default 4 threads */,
     };
 
+    // Run only selected name of the KAT file
+    let file_filter = match argmap.get(&"--filter".to_string()) {
+        Some(n) => n,
+        None => ""
+    };
+
     match argmap.get(&"--katdir".to_string()) {
-        Some(kat_dir) => execute(kat_dir.to_string(), thread_number),
+        Some(kat_dir) => execute(kat_dir.to_string(), thread_number, file_filter),
         None => panic!("--katdir required")
     };
+
 }