秘ひ密みつ鍵かぎ暗あん号ごう方ほう式しきMeaningsNoun1. secret key cryptosystemKanji used秘secret密intimate鍵key暗dark号ID number方way式ceremonyComposed of秘ひ密みつsecret; secrecy; confidentiality; privacy; mystery; secret (e.g. to success); esoteric teachingsNoun鍵かぎkey; lock; key (to a problem, success, etc.); clueNoun暗あん号ごうcode; password; cipherNoun方ほう式しきform; method; system; formulaNoun