crypto: gf128mul - Zero memory when freeing multiplication table

GF(2^128) multiplication tables are typically used for secret information, so it's a good idea to zero them on free. Signed-off-by: Alex Cope <[email protected]> Signed-off-by: Eric Biggers <[email protected]> Signed-off-by: Herbert Xu <[email protected]>
chewitt · Nov 17, 2016 · 75aa0a7 · 75aa0a7
1 parent b516b88
commit 75aa0a7
Show file tree

Hide file tree

Showing 2 changed files with 3 additions and 3 deletions.
diff --git a/crypto/gf128mul.c b/crypto/gf128mul.c
@@ -310,8 +310,8 @@ void gf128mul_free_64k(struct gf128mul_64k *t)
 	int i;
 
 	for (i = 0; i < 16; i++)
-		kfree(t->t[i]);
-	kfree(t);
+		kzfree(t->t[i]);
+	kzfree(t);
 }
 EXPORT_SYMBOL(gf128mul_free_64k);
 

diff --git a/include/crypto/gf128mul.h b/include/crypto/gf128mul.h
@@ -177,7 +177,7 @@ void gf128mul_4k_bbe(be128 *a, struct gf128mul_4k *t);
 
 static inline void gf128mul_free_4k(struct gf128mul_4k *t)
 {
-	kfree(t);
+	kzfree(t);
 }