+ void DH_set_default_method(const DH_METHOD *meth);
+ const DH_METHOD *DH_get_default_method(void);
+ int DH_set_method(DH *dh, const DH_METHOD *meth);
+ DH *DH_new_method(ENGINE *engine);
+ const DH_METHOD *DH_OpenSSL(void);
+
+ int DH_get_ex_new_index(long argl, char *argp, int (*new_func)(),
+ int (*dup_func)(), void (*free_func)());
+ int DH_set_ex_data(DH *d, int idx, char *arg);
+ char *DH_get_ex_data(DH *d, int idx);
+