書しょ籍せき暗あん号ごうしょせきあんごうMeanings1nounbook cipher; Ottendorf cipherA cipher where each plaintext letter is encoded by a book, page, line, and word position. Used in classical cryptography.書しょ籍せき暗あん号ごうは、あらかじめ決きめた本ほんの特とく定ていの単たん語ごを参
