On Thu, 30 Oct 2003 14:42:21 +0000, you wrote:

>Jinx,
>
>On Thu, 30 Oct 2003 23:23:20 +1300, Jinx wrote:
>
>> > Each agent had a known pattern of spelling mistakes, and
>> > often the British intelligence found that the errors did not
>> > occur, so assumed the Germans had captured the agent.
>>
>> Ah, sneaky. That type of human failing was an important aid
>> to Bletchley Park's deciphering team. Enigma itself was a
>> pretty robust encryption system but the human operators'
>> carelessness and complacency was its undoing

This was true both in design and operation - one fatal flaw was that the =
wiring was such that a
letter could not be encoded to itself. This allowed a search to be done =
to eliminate a large
percentage of possible key settings.=20

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