symmetric key cryptography
together, both, neither, all, and, alike, with
キョウ / とも
traffic, pass through, avenue, commute, counter for letters, notes, documents, etc.
ツウ / とお.る
key
ケン / かぎ
darkness, disappear, shade, informal, grow dark, be blinded
アン / くら.い
nickname, number, item, title, pseudonym, name, call
ゴウ / さけ.ぶ