Change PK module preprocessor check on word size
There were preprocessor directives in pk.c and pk_wrap.c that cheked
whether the bit length of size_t was greater than that of unsigned int.
However, the check relied on the POLARSSL_HAVE_INT64 macro being
defined which is not directly related to size_t. This might result in
errors in some platforms. This change modifies the check to use the
macros SIZE_MAX and UINT_MAX instead making the code more robust.
diff --git a/library/pk.c b/library/pk.c
index fc036d2..8bcba58 100644
--- a/library/pk.c
+++ b/library/pk.c
@@ -30,8 +30,6 @@
#include "polarssl/pk.h"
#include "polarssl/pk_wrap.h"
-#include "polarssl/bignum.h"
-
#if defined(POLARSSL_RSA_C)
#include "polarssl/rsa.h"
#endif
@@ -43,6 +41,7 @@
#endif
#include <limits.h>
+#include <stdint.h>
/* Implementation that should never be optimized out by the compiler */
static void polarssl_zeroize( void *v, size_t n ) {
@@ -212,10 +211,10 @@
int ret;
const pk_rsassa_pss_options *pss_opts;
-#if defined(POLARSSL_HAVE_INT64)
+#if SIZE_MAX > UINT_MAX
if( md_alg == POLARSSL_MD_NONE && UINT_MAX < hash_len )
return( POLARSSL_ERR_PK_BAD_INPUT_DATA );
-#endif /* POLARSSL_HAVE_INT64 */
+#endif /* SIZE_MAX > UINT_MAX */
if( options == NULL )
return( POLARSSL_ERR_PK_BAD_INPUT_DATA );