TR_EXPORT DH *tr_create_dh_params(unsigned char *key, size_t len);
TR_EXPORT DH *tr_create_matching_dh(unsigned char *key, size_t len, DH *in_dh);
TR_EXPORT void tr_destroy_dh_params(DH *dh);
TR_EXPORT int tr_compute_dh_key(unsigned char **pbuf, BIGNUM *pub_key, DH *priv_dh);
TR_EXPORT DH *tr_create_dh_params(unsigned char *key, size_t len);
TR_EXPORT DH *tr_create_matching_dh(unsigned char *key, size_t len, DH *in_dh);
TR_EXPORT void tr_destroy_dh_params(DH *dh);
TR_EXPORT int tr_compute_dh_key(unsigned char **pbuf, BIGNUM *pub_key, DH *priv_dh);