pub unsafe extern "C" fn camellia_crypt_ctr(
    ctx: *mut camellia_context,
    length: usize,
    nc_off: *mut usize,
    nonce_counter: *mut c_uchar,
    stream_block: *mut c_uchar,
    input: *const c_uchar,
    output: *mut c_uchar
) -> c_int