New Tunny machine exhibition at Bletchley Park.

Discussion in 'Top Secret' started by Peter Clare, May 26, 2011.

  1. Peter Clare

    Peter Clare Very Senior Member

    A new exhibit opens today at Bletchley Park that illustrates the entire World War II codebreaking process from signal intercept to final decrypt by Tunny machines.


    The original Tunny, a British project to re-engineer the then-unseen German Lorenz S42 cipher machine, was developed in 1942. After tens of thousands of man-hours and with only scattered information about the original, a team at The National Museum of Computing recently succeeded in completing a fully functioning rebuild of a Tunny machine.

    Read more........

    Bletchley Park completes epic Tunny machine • The Register
     
  2. geoff501

    geoff501 Achtung Feind hört mit

    The original Tunny, a British project to re-engineer the then-unseen German Lorenz S42 cipher machine, was developed in 1942.


    Bletchley's replica of the German SZ42 was made with telephone stepping switches (uniselectors). The Swedes, who also broke this machine, used machines made from bicycle chains, with the length of links equal to the various wheels on the SZ42. Someone in the book 'Codebreakers' edited by Hinsley and Stripp suggested using a Meccano set to build the replica. The idea of defeating Hitler with Meccano was attractive!
     

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