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How can you tell if a cipher is secure?
I was asked that question during an interview a while ago. Back then it troubled me because it seemed so basic and yet and I had no idea how to answer it. I became vivid and didn't know what to say and later I didn't get the job. I thought it would be interesting to write down how I would answer this question now.
kryptographie 
december 2014 by grenzreiter
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