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/blowfish.c b/library/blowfish.c
index 9003f0d..59c5798 100644
--- a/library/blowfish.c
+++ b/library/blowfish.c
@@ -34,16 +34,12 @@
#if defined(MBEDTLS_BLOWFISH_C)
#include "mbedtls/blowfish.h"
+#include "mbedtls/utils.h"
#include <string.h>
#if !defined(MBEDTLS_BLOWFISH_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;
-}
-
/*
* 32-bit integer manipulation macros (big endian)
*/