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''Kryptos'' is a sculpture by the American artist, Jim Sanborn, that is located on the grounds of the Central Intelligence Agency (CIA) in Langley, Virginia. Since its dedication on November 3, 1990, there has been much speculation about the meaning of the encrypted messages it bears. Of the four messages, three have been solved, while the fourth remains as one of the most famous unsolved codes in the world. The sculpture continues to be of interest to cryptanalysts, both amateur and professional, who are attempting to decipher the final section. The sculptor has given two clues to this section. == Description == The main sculpture is located in the northwest corner of the New Headquarters Building courtyard, outside of the Agency cafeteria. The sculpture comprises four large copper plates with other elements made of red and green granite, white quartz, and petrified wood. The name ''Kryptos'' comes from the Greek word for "hidden", and the theme of the sculpture is "intelligence gathering." The most prominent feature is a large vertical s-shaped copper screen resembling a scroll, or piece of paper emerging from a computer printer, half of which consists of encrypted text. The characters are all found within the 26 letters of the standard Latin alphabet, along with question marks, and are cut out of the copper. The main sculpture contains four separate enigmatic messages, three of which have been deciphered.〔 In addition to the main part of the sculpture, Jim Sanborn also placed other pieces at the CIA grounds, such as several large granite slabs with sandwiched copper sheets outside the entrance to the New Headquarters Building. Many morse code messages are found on these copper sheets, and one of the slabs has an engraving of a compass rose pointing to a lodestone. Other elements of Sanborn's installation include a landscaped area, a duck pond, a reflecting pool, and other pieces of stone. The cost of the sculpture was $250,000.〔 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「Kryptos」の詳細全文を読む スポンサード リンク
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