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/cmac.c b/library/cmac.c
index a4a2106..54ad843 100644
--- a/library/cmac.c
+++ b/library/cmac.c
@@ -49,6 +49,7 @@
#if defined(MBEDTLS_CMAC_C)
#include "mbedtls/cmac.h"
+#include "mbedtls/utils.h"
#include <string.h>
@@ -67,11 +68,6 @@
#if !defined(MBEDTLS_CMAC_ALT) || defined(MBEDTLS_SELF_TEST)
-/* 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;
-}
-
/*
* Multiplication by u in the Galois field of GF(2^n)
*