1 files changed, 4 insertions, 3 deletions
diff --git a/ref/blake2-impl.h b/ref/blake2-impl.h
index 5ac7a43..ae582a5 100644
--- a/ref/blake2-impl.h
+++ b/ref/blake2-impl.h
@@ -15,6 +15,7 @@
 #define __BLAKE2_IMPL_H__
 
 #include <stdint.h>
+#include <string.h>
 
 static inline uint32_t load32( const void *src )
 {
@@ -126,10 +127,10 @@ static inline uint64_t rotr64( const uint64_t w, const unsigned c )
 }
 
 /* prevents compiler optimizing out memset() */
-static inline void secure_zero_memory( void *v, size_t n )
+static inline void secure_zero_memory(void *v, size_t n)
 {
-  volatile uint8_t *p = ( volatile uint8_t * )v;
-  while( n-- ) *p++ = 0;
+  static void *(*const volatile memset_v)(void *, int, size_t) = &memset;
+  memset_v(v, 0, n);
 }
 
 #endif