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Make BN_DEBUG_RAND less painfully slow by only consuming one byte of

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pseudo-random data for each bn_pollute().
This commit is contained in:
Geoff Thorpe 2003-11-30 21:21:30 +00:00
parent 657a919598
commit 5734bebe05
1 changed files with 3 additions and 1 deletions
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4
crypto/bn/bn.h
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@ -635,12 +635,14 @@ int RAND_pseudo_bytes(unsigned char *buf,int num);
do { \ do { \
const BIGNUM *_bnum1 = (a); \ const BIGNUM *_bnum1 = (a); \
if(_bnum1->top < _bnum1->dmax) { \ if(_bnum1->top < _bnum1->dmax) { \
unsigned char _tmp_char; \
/* We cast away const without the compiler knowing, any \ /* We cast away const without the compiler knowing, any \
* *genuinely* constant variables that aren't mutable \ * *genuinely* constant variables that aren't mutable \
* wouldn't be constructed with top!=dmax. */ \ * wouldn't be constructed with top!=dmax. */ \
BN_ULONG *_not_const; \ BN_ULONG *_not_const; \
memcpy(&_not_const, &_bnum1->d, sizeof(BN_ULONG*)); \ 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)); \ (_bnum1->dmax - _bnum1->top) * sizeof(BN_ULONG)); \
} \ } \
} while(0) } while(0)