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);
BIGNUM *BN_generate_prime(BIGNUM *ret, int bits,int safe, BIGNUM *add,
BIGNUM *rem, void (*callback)(int, int, void *), void *cb_arg);