Virtual Wartime Bletchley Park
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Codes and Ciphers
|An important part of the work of the Registration Room was Traffic analysis. Gordon Welchman had shown the importance of this activity. All incoming intercepts received from the Y Stations were meticulously logged and cross indexed to build up a detailed picture of the signals from all parts of the German Forces. This helped the Machine Room in locating cribs and possible "kisses". This was the Park name for a message sent twice on different Enigma key settings or once on Enigma and once using a different cipher which another department in the Park could break.|
|This page was originally created by the late Tony Sale
the original curator of the Bletchley Park Museum and is currently being hosted by Rich Sale Limited.