RAND_METHOD
const RAND_METHOD *rand_meth;
const RAND_METHOD *
ENGINE_set_RAND(ENGINE *e, const RAND_METHOD *rand_meth)
RAND_set_rand_method(const RAND_METHOD *meth)
const RAND_METHOD *
RAND_METHOD *
int ENGINE_set_RAND(ENGINE *e, const RAND_METHOD *rand_meth);
const RAND_METHOD *ENGINE_get_RAND(const ENGINE *e);
int RAND_set_rand_method(const RAND_METHOD *meth);
const RAND_METHOD *RAND_get_rand_method(void);
RAND_METHOD *RAND_SSLeay(void);