たい量子 りょうし暗号 あんごうではありませんでした
tairyōshian gōdewa arimasendeshita

Noun
Desu Copula

The polite, past negative form of 耐量子暗号

1. Was not quantum-resistant.; Was not resistant to quantum cryptography.

Past/Perfective
Negative
Polite
Formal Register
Computing