Commit e3068929 authored by Bodo Möller's avatar Bodo Möller
Browse files

Simplify BN_rand_range

parent 836f9960

crypto/bn/bn.h

+1 −1
Original line number Diff line number Diff line
@@ -329,7 +329,7 @@ BIGNUM *BN_CTX_get(BN_CTX *ctx); 
void	BN_CTX_end(BN_CTX *ctx);

int     BN_rand(BIGNUM *rnd, int bits, int top,int bottom);

int     BN_pseudo_rand(BIGNUM *rnd, int bits, int top,int bottom);

int	BN_rand_range(BIGNUM *rnd, BIGNUM *min, BIGNUM *range);

int	BN_rand_range(BIGNUM *rnd, BIGNUM *range);

int	BN_num_bits(const BIGNUM *a);

int	BN_num_bits_word(BN_ULONG);

BIGNUM *BN_new(void);

crypto/bn/bn_rand.c

+3 −7
Original line number Diff line number Diff line
@@ -169,8 +169,9 @@ int BN_bntest_rand(BIGNUM *rnd, int bits, int top, int bottom) 
	}

#endif



/* random number r: min <= r < min+range */

int	BN_rand_range(BIGNUM *r, BIGNUM *min, BIGNUM *range)



/* random number r:  0 <= r < range */

int	BN_rand_range(BIGNUM *r, BIGNUM *range)

	{

	int n;
@@ -217,10 +218,5 @@ int BN_rand_range(BIGNUM *r, BIGNUM *min, BIGNUM *range) 
		while (BN_cmp(r, range) >= 0);

		}



	if (min != NULL)

		{

		if (!BN_add(r, r, min)) return 0;

		}

	

	return 1;

	}

crypto/dsa/dsa_ossl.c

+1 −1
Original line number Diff line number Diff line
@@ -181,7 +181,7 @@ static int dsa_sign_setup(DSA *dsa, BN_CTX *ctx_in, BIGNUM **kinvp, BIGNUM **rp) 


	/* Get random k */

	do

		if (!BN_rand_range(&k, NULL, dsa->q)) goto err;

		if (!BN_rand_range(&k, dsa->q)) goto err;

	while (BN_is_zero(&k));



	if ((dsa->method_mont_p == NULL) && (dsa->flags & DSA_FLAG_CACHE_MONT_P))

doc/crypto/BN_rand.pod

+2 −3
Original line number Diff line number Diff line
@@ -12,7 +12,7 @@ BN_rand, BN_pseudo_rand - generate pseudo-random number 


 int BN_pseudo_rand(BIGNUM *rnd, int bits, int top, int bottom);



 int BN_rand_range(BIGNUM *rnd, BIGNUM *min, BIGNUM *range);

 int BN_rand_range(BIGNUM *rnd, BIGNUM *range);



=head1 DESCRIPTION
@@ -28,8 +28,7 @@ non-cryptographic purposes and for certain purposes in cryptographic 
protocols, but usually not for key generation etc.



BN_rand_range() generates a cryptographically strong pseudo-random

number B<rnd> in the range B<min> E<lt>= B<rnd> E<lt> B<min> + B<range>.

B<min> may be NULL, in that case 0 E<lt>= B<rnd> E<lt> B<range>.

number B<rnd> in the range 0 <lt>= B<rnd> E<lt> B<range>.



The PRNG must be seeded prior to calling BN_rand() or BN_rand_range().

doc/crypto/bn.pod

+1 −1
Original line number Diff line number Diff line
@@ -68,7 +68,7 @@ bn - multiprecision integer arithmetics 


 int BN_rand(BIGNUM *rnd, int bits, int top, int bottom);

 int BN_pseudo_rand(BIGNUM *rnd, int bits, int top, int bottom);

 int BN_rand_range(BIGNUM *rnd, BIGNUM *min, BIGNUM *max);

 int BN_rand_range(BIGNUM *rnd, BIGNUM *range);



 BIGNUM *BN_generate_prime(BIGNUM *ret, int bits,int safe, BIGNUM *add,

         BIGNUM *rem, void (*callback)(int, int, void *), void *cb_arg);