pub unsafe extern "C" fn bignIdSign(
id_sig: *mut octet,
params: *const bign_params,
oid_der: *const octet,
oid_len: usize,
id_hash: *const octet,
hash: *const octet,
id_privkey: *const octet,
rng: gen_i,
rng_state: *mut c_void,
) -> err_t