"Kryptos" a unsolved cryptographic sculpture at the CIA Headquarters

"Kryptos" a unsolved cryptographic sculpture at the CIA Headquarters
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Kryptos is the first cryptographic sculpture made by Sanborn. It was presented to the Central Intelligence Agency (CIA) in Langley, Virginia, USA on November 3, 1990. The sculpture has been both a puzzle and a mystery for those who hope to crack the cyphered messages contained within the sculpture's 2,000 alphabetic letters. In the 20 years since Kryptos was erected, three of the four sections have been confirmed to have been solved. No one has yet been able to solve the remaining 97-character message.[9] He has also said that should he die before the sculpture's code is cracked, there will be a "sort of historic record" left to verify the claim.[6]

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