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The Double Transposition Cipher Back to Crack the Ciphers This was one of the most secure hand ciphers used in the Second World War. It was used by both the Allies and the Axis, and served both ...
Dec 14, 2020 13:07:00 What is the whole picture of the ciphertext of the mysterious serial murder 'Zodiac Killer' being deciphered over 51 years?
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