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/pk.c b/library/pk.c
index b52c73f..bd3e427 100644
--- a/library/pk.c
+++ b/library/pk.c
@@ -29,6 +29,8 @@
#include "mbedtls/pk.h"
#include "mbedtls/pk_internal.h"
+#include "mbedtls/utils.h"
+
#if defined(MBEDTLS_RSA_C)
#include "mbedtls/rsa.h"
#endif
@@ -42,11 +44,6 @@
#include <limits.h>
#include <stdint.h>
-/* Implementation that should never be optimized out by the compiler */
-static void mbedtls_zeroize( void *v, size_t n ) {
- volatile unsigned char *p = v; while( n-- ) *p++ = 0;
-}
-
/*
* Initialise a mbedtls_pk_context
*/