Kryptographik Explained

Kryptographik Lehrbuch der Geheimschreibekunst (Cryptology: Instruction Book on the Art of Secret Writing) is an 1809 book on cryptography written by Johann Ludwig Klüber.[1]

In 2011 the National Security Agency included a copy of Kryptographik, used by a German cryptographer during World War II, as part of a 50,000 page release of classified documents.[2] [3]

Notes and References

  1. Book: The New International Encyclopædia Volume 6 . 1925 . Dodd, Mead . 325.
  2. Web site: The National Security Agency Releases Over 50,000 Pages of Declassified Documents . NSA . https://web.archive.org/web/20120327232410/https://www.nsa.gov/public_info/press_room/2011/50000_declassified_docs.shtml . March 27, 2012 . 8 June 2011.
  3. Web site: Update to 8 June 2011 Press Release . NSA . 23 September 2020 . 19 August 2011.

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