Update ML-KEM's internal header files to use unique include guards

crypto/fipsmodule/ml_kem/README.md

@@ -12,5 +12,6 @@ that initialize a given structure with values corresponding to a parameter set.
 - `symmetric-shake.c`: unnecessary include of fips202.h is removed.
 - `api.h`: `pqcrystals` prefix substituted with `ml_kem` (to be able to build alongside `crypto/kyber`).
 - `poly.c`: the `poly_frommsg` function was modified to address the constant-time issue described [here](https://github.com/pq-crystals/kyber/commit/9b8d30698a3e7449aeb34e62339d4176f11e3c6c).
+- All internal header files were updated with unique `ML_KEM_*` include guards.
 
 **Testing.** The KATs were obtained from an independent implementation of ML-KEM written in SPARK Ada subset: https://github.com/awslabs/LibMLKEM.

crypto/fipsmodule/ml_kem/ml_kem_ref/cbd.h

@@ -1,5 +1,5 @@
-#ifndef CBD_H
-#define CBD_H
+#ifndef ML_KEM_CBD_H
+#define ML_KEM_CBD_H
 
 #include <stdint.h>
 #include "params.h"

crypto/fipsmodule/ml_kem/ml_kem_ref/indcpa.h

@@ -1,5 +1,5 @@
-#ifndef INDCPA_H
-#define INDCPA_H
+#ifndef ML_KEM_INDCPA_H
+#define ML_KEM_INDCPA_H
 
 #include <stdint.h>
 #include "params.h"

crypto/fipsmodule/ml_kem/ml_kem_ref/ntt.h

@@ -1,5 +1,5 @@
-#ifndef NTT_H
-#define NTT_H
+#ifndef ML_KEM_NTT_H
+#define ML_KEM_NTT_H
 
 #include <stdint.h>
 #include "params.h"

crypto/fipsmodule/ml_kem/ml_kem_ref/params.h

@@ -1,5 +1,5 @@
-#ifndef PARAMS_H
-#define PARAMS_H
+#ifndef ML_KEM_PARAMS_H
+#define ML_KEM_PARAMS_H
 
 #include <openssl/base.h>
 

crypto/fipsmodule/ml_kem/ml_kem_ref/poly.h

@@ -1,5 +1,5 @@
-#ifndef POLY_H
-#define POLY_H
+#ifndef ML_KEM_POLY_H
+#define ML_KEM_POLY_H
 
 #include <stdint.h>
 #include "params.h"

crypto/fipsmodule/ml_kem/ml_kem_ref/polyvec.h

@@ -1,5 +1,5 @@
-#ifndef POLYVEC_H
-#define POLYVEC_H
+#ifndef ML_KEM_POLYVEC_H
+#define ML_KEM_POLYVEC_H
 
 #include <stdint.h>
 #include "params.h"

crypto/fipsmodule/ml_kem/ml_kem_ref/reduce.h

@@ -1,5 +1,5 @@
-#ifndef REDUCE_H
-#define REDUCE_H
+#ifndef ML_KEM_REDUCE_H
+#define ML_KEM_REDUCE_H
 
 #include <stdint.h>
 #include "params.h"

crypto/fipsmodule/ml_kem/ml_kem_ref/symmetric.h

@@ -1,5 +1,5 @@
-#ifndef SYMMETRIC_H
-#define SYMMETRIC_H
+#ifndef ML_KEM_SYMMETRIC_H
+#define ML_KEM_SYMMETRIC_H
 
 #include <stddef.h>
 #include <stdint.h>

crypto/fipsmodule/ml_kem/ml_kem_ref/verify.h

@@ -1,5 +1,5 @@
-#ifndef VERIFY_H
-#define VERIFY_H
+#ifndef ML_KEM_VERIFY_H
+#define ML_KEM_VERIFY_H
 
 #include <stddef.h>
 #include <stdint.h>