Remove individual copies of mbedtls_zeroize()
This commit removes all the static occurrencies of the function
mbedtls_zeroize() in each of the individual .c modules. Instead the
function has been moved to utils.h that is included in each of the
modules.
diff --git a/library/arc4.c b/library/arc4.c
index 05b33d3..a6d2d4e 100644
--- a/library/arc4.c
+++ b/library/arc4.c
@@ -33,6 +33,7 @@
#if defined(MBEDTLS_ARC4_C)
#include "mbedtls/arc4.h"
+#include "mbedtls/utils.h"
#include <string.h>
@@ -47,11 +48,6 @@
#if !defined(MBEDTLS_ARC4_ALT)
-/* Implementation that should never be optimized out by the compiler */
-static void mbedtls_zeroize( void *v, size_t n ) {
- volatile unsigned char *p = (unsigned char*)v; while( n-- ) *p++ = 0;
-}
-
void mbedtls_arc4_init( mbedtls_arc4_context *ctx )
{
memset( ctx, 0, sizeof( mbedtls_arc4_context ) );