Commit 5734bebe authored by Geoff Thorpe's avatar Geoff Thorpe
Browse files

Make BN_DEBUG_RAND less painfully slow by only consuming one byte of 

pseudo-random data for each bn_pollute().
parent 657a9195

crypto/bn/bn.h

+3 −1
Original line number Diff line number Diff line
@@ -635,12 +635,14 @@ int RAND_pseudo_bytes(unsigned char *buf,int num); 
	do { \

		const BIGNUM *_bnum1 = (a); \

		if(_bnum1->top < _bnum1->dmax) { \

			unsigned char _tmp_char; \

			/* 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, &_bnum1->d, sizeof(BN_ULONG*)); \

			RAND_pseudo_bytes((unsigned char *)(_not_const + _bnum1->top), \

			RAND_pseudo_bytes(&_tmp_char, 1); \

			memset((unsigned char *)(_not_const + _bnum1->top), _tmp_char, \

				(_bnum1->dmax - _bnum1->top) * sizeof(BN_ULONG)); \

		} \

	} while(0)