EVPerr(EVP_F_EVP_PKEY_GET_DH, EVP_R_EXPECTING_A_DH_KEY);
EVPerr(EVP_F_EVP_PKEY_RGET_DH, EVP_R_EXPECTING_A_DH_KEY);
DH *EVP_PKEY_rget_DH(EVP_PKEY *pkey)	{	if(pkey->type != EVP_PKEY_DH) {		EVPerr(EVP_F_EVP_PKEY_GET_DH, EVP_R_EXPECTING_A_DH_KEY);		return NULL;	}	CRYPTO_add(&pkey->pkey.dh->references, 1, CRYPTO_LOCK_DH);	return pkey->pkey.dh;}