* defined. This not only improves external code, it provides more test
* coverage for openssl's own code.
*/
-#define bn_correct_top(a) \
- { \
- BN_ULONG *ftl; \
- if ((a)->top > 0) \
- { \
- for (ftl= &((a)->d[(a)->top-1]); (a)->top > 0; (a)->top--) \
- if (*(ftl--)) break; \
- } \
- }
/* #define BN_DEBUG_RAND */
int RAND_pseudo_bytes(unsigned char *buf,int num);
#define BN_DEBUG_TRIX
#endif
-#define bn_check_top(a) \
+#define bn_pollute(a) \
do { \
- const BIGNUM *_tbignum = (a); \
- assert((_tbignum->top == 0) || \
- (_tbignum->d[_tbignum->top - 1] != 0)); \
- if(_tbignum->top < _tbignum->dmax) { \
+ const BIGNUM *_bnum1 = (a); \
+ if(_bnum1->top < _bnum1->dmax) { \
/* We cast away const without the compiler knowing, any \
* *genuinely* constant variables that aren't mutable \
* wouldn't be constructed with top!=dmax. */ \
BN_ULONG *_not_const; \
- memcpy(&_not_const, &_tbignum->d, sizeof(BN_ULONG*)); \
- RAND_pseudo_bytes((unsigned char *)(_not_const + _tbignum->top), \
- (_tbignum->dmax - _tbignum->top) * sizeof(BN_ULONG)); \
+ memcpy(&_not_const, &_bnum1->d, sizeof(BN_ULONG*)); \
+ RAND_pseudo_bytes((unsigned char *)(_not_const + _bnum1->top), \
+ (_bnum1->dmax - _bnum1->top) * sizeof(BN_ULONG)); \
} \
} while(0)
#ifdef BN_DEBUG_TRIX
#undef RAND_pseudo_bytes
#endif
-#else /* !BN_DEBUG_RAND */
+#else
+#define bn_pollute(a)
+#endif
#define bn_check_top(a) \
do { \
- const BIGNUM *_tbignum = (a); \
- assert((_tbignum->top == 0) || \
- (_tbignum->d[_tbignum->top - 1] != 0)); \
+ const BIGNUM *_bnum2 = (a); \
+ assert((_bnum2->top == 0) || \
+ (_bnum2->d[_bnum2->top - 1] != 0)); \
+ bn_pollute(_bnum2); \
} while(0)
-#endif
#define bn_fix_top(a) bn_check_top(a)
#else /* !BN_DEBUG */
+#define bn_pollute(a)
#define bn_check_top(a)
#define bn_fix_top(a) bn_correct_top(a)
#endif
+#define bn_correct_top(a) \
+ { \
+ BN_ULONG *ftl; \
+ if ((a)->top > 0) \
+ { \
+ for (ftl= &((a)->d[(a)->top-1]); (a)->top > 0; (a)->top--) \
+ if (*(ftl--)) break; \
+ } \
+ bn_pollute(a); \
+ }
+
BN_ULONG bn_mul_add_words(BN_ULONG *rp, const BN_ULONG *ap, int num, BN_ULONG w);
BN_ULONG bn_mul_words(BN_ULONG *rp, const BN_ULONG *ap, int num, BN_ULONG w);
void bn_sqr_words(BN_ULONG *rp, const BN_ULONG *ap, int num);