I know that that was why the codebreakers could break Enigma, but why?
In: Mathematics
The Enigma’s reflector made it so that a letter could never map to itself. This quirk, while seemingly a security feature, ended up being a critical flaw that Bletchley Park exploited. By knowing a letter could never be itself, they could immediately rule out many possible configurations. Kind of ironic if you think about it—if it was just a tad less “secure,” it might’ve been unbreakable for much longer.
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