共有 きょうゆう かぎ暗号 あんごうじゃなかったです
kyōyūkagiangōjanakattadesu

Noun
Desu Copula

The polite, past negative form of 共有鍵暗号

1. Wasn't a shared key cipher.; Didn't use shared key encryption.

Past/Perfective
Negative
Polite
Casual Register
Computing