That is mostly what I meant. Military-grade means approved by NSA or it's equivalent in given state. What I tried to point out is that such approval does not ne

That is mostly what I meant. Military-grade means approved by NSA or it's equivalent in given state. What I tried to point out is that such approval does not necessarily mean that such cryptosystem is secure for your application (eg. various tactical radio encryption systems, "military DRM"...) or even secure and meaningful at all ("data diode", various NATO TS approved quantum cryptography things...).