Assertion: cryptography's goal | /r/HasProperty | to devise cipher
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text: It is worth remarking that the first example shows how even a child can create ciphers, at a cost of making as many flips of a fair coin as he has bits of information to conceal, that cannot be “broken” by even national cryptologic services with arbitrary computing power—disabusing the lay notion that the unachieved goal of cryptography is to devise a cipher that cannot be broken.