共通 きょうつう かぎ暗号 あんごうじゃなかったです
kyōtsūkagiangōjanakattadesu

Noun
Desu Copula

The polite, past negative form of 共通鍵暗号

1. Wasn't a shared key encryption.; Wasn't a common key cipher.

Past/Perfective
Negative
Polite
Casual Register
Computing