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The vulnerability exists in the presumption that one would seek the plaintext not the key. How many possible sequences of $2^8$ can be a result of a key generator with a given entropy factor? How many orderings of such bytes will conform to the parameters of a given key generator? Even CSPRNGs and 'truly random' sources are vulnerable to such method; though ...


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Because the one-time pad allows you to send a confidential message over an (otherwise) insecure channel at a later time than when you send the key over the requisite secure channel. And at that later time you may not have access to that secure channel. One way to put it is this: most cryptography requires you to use some sort of out of band secure channel ...


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You use a secure communication channel to share the key. This is where my brains stop working. Good, your good skeptic brain should at least pause at this point to form a question. Preferably it should start working again and try and get an answer, e.g. from this site :) Why share the key of a OTP through a secure channel, and not just share the ...


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First, let's re-iterate that there is no true one-time pad in modern cryptography or any other information system - it's only a hypothetical thinking reference. The reason to use OTP in this case, would be to maximize the utility of the rare window where there would be a secure channel. Let's imagine a world without internet and public-key cryptography ...


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