模仿遊戲 關於解碼過程 - 電影

By Elizabeth
at 2015-02-28T19:37
at 2015-02-28T19:37
Table of Contents
※ 引述《JamesHowlett (詹姆士好累)》之銘言:
: 電影很好看 但有一些疑問
: 在電影裡
: 瓊的同事每天都會截聽到的電報 其開頭都會有五個字母CILLY
: 圖靈聽到這個消息後 想到可以利用重複字詞 天氣 或 結尾希勒特萬歲等等
: 讓機器運算的過程簡化
: 我大概查了德軍在二戰使用恩尼格瑪的規範
: 德軍會每天更換日密鑰(Day Key)
: 並在每封電文開頭重複三個用日密鑰加密過的字母
: 例如ABCABC→GHIQUY
: 當作個別電文密鑰(Message Key)
: 所以瓊的同事截聽到的電文應該不是密文
: 不然她就無法聽出開頭的字母都是固定的CILLY
: 而是今天收到FHWRE 明天收到JIEKW 後天收到EKGQE 之類的(雖然轉譯成明文都是CILLY)
CILLY是那個女的假設,或著說他幫那位"德國朋友"取的綽號
並不是真的解出來是CILLY
不過可以肯定的是那一定是個人名,因為他的字每天出現的字數都一樣
而且都出現在信的左上
--
: 電影很好看 但有一些疑問
: 在電影裡
: 瓊的同事每天都會截聽到的電報 其開頭都會有五個字母CILLY
: 圖靈聽到這個消息後 想到可以利用重複字詞 天氣 或 結尾希勒特萬歲等等
: 讓機器運算的過程簡化
: 我大概查了德軍在二戰使用恩尼格瑪的規範
: 德軍會每天更換日密鑰(Day Key)
: 並在每封電文開頭重複三個用日密鑰加密過的字母
: 例如ABCABC→GHIQUY
: 當作個別電文密鑰(Message Key)
: 所以瓊的同事截聽到的電文應該不是密文
: 不然她就無法聽出開頭的字母都是固定的CILLY
: 而是今天收到FHWRE 明天收到JIEKW 後天收到EKGQE 之類的(雖然轉譯成明文都是CILLY)
CILLY是那個女的假設,或著說他幫那位"德國朋友"取的綽號
並不是真的解出來是CILLY
不過可以肯定的是那一定是個人名,因為他的字每天出現的字數都一樣
而且都出現在信的左上
--
Tags:
電影
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