int EVP_PKEY_size(EVP_PKEY *pkey);
int EVP_PKEY_set_type(EVP_PKEY *pkey,int type);
int EVP_PKEY_set_type_str(EVP_PKEY *pkey, const char *str, int len);
int EVP_PKEY_size(EVP_PKEY *pkey);
int EVP_PKEY_set_type(EVP_PKEY *pkey,int type);
int EVP_PKEY_set_type_str(EVP_PKEY *pkey, const char *str, int len);