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/hmac_drbg.c b/library/hmac_drbg.c
index 24c609e..1ef819d 100644
--- a/library/hmac_drbg.c
+++ b/library/hmac_drbg.c
@@ -34,6 +34,7 @@
#if defined(MBEDTLS_HMAC_DRBG_C)
#include "mbedtls/hmac_drbg.h"
+#include "mbedtls/utils.h"
#include <string.h>
@@ -50,11 +51,6 @@
#endif /* MBEDTLS_SELF_TEST */
#endif /* MBEDTLS_PLATFORM_C */
-/* 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;
-}
-
/*
* HMAC_DRBG context initialization
*/