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Atbash (also transliterated Atbaš) is a simple substitution cipher originally for the Hebrew alphabet, but possible with any known alphabet. It is considered a 'weak' or 'simple' cipher because it only has one possible key, and it is a simple monoalphabetic substitution cipher. However, this may not have been an issue at the time when the cipher was first devised. == History == The name derives from the first, last, second, and second to last Hebrew letters (Aleph-Tav-Beth-Shin). In the Book of Jeremiah, ''Lev Kamai'' (51:1) is Atbash for ''Kasdim'' (Chaldeans), and ''Sheshakh'' (25:26; 51:41) is Atbash for ''Bavel'' (Babylon). The Atbash cipher for the modern Hebrew alphabet would be: Plain: אבגדהוזחטיכלמנסעפצקרשת Cipher: תשרקצפעסנמלכיטחזוהדגבא 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Atbash」の詳細全文を読む スポンサード リンク
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