# Tag Info

3

The system described in the quoted article depends on the security of AES for random keys (not only on the theoretical unbreakability of the OTP) in at least at least two things: the encryption of large files, as apparent in the quotes of the question; the initial establishment of the OTP, as shown by this other quote The first step is always optical, ...

2

First, the system as I understand it does not use a one-time-pad at all, but a steam cipher. The keystream is generated via a CSPRNG, and is not truly random, so it cannot be a one-time-pad. They are misrepresenting it. But, to answer your question, let's assume the system did in fact use a one-time-pad, and used it in the manner described. In this ...

2

Actually, it's not a hare-brained idea at all; you certainly can do integrity checking using a one-time pad. However, I believe that you'll need to use the one-time pad bits a bit faster than you'd expect, to achieve a forgery probability of at most $2^{-32}$, I believe you'll need at least 64 pad bits per packet (assuming informational theoretical security ...

Only top voted, non community-wiki answers of a minimum length are eligible