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1: One-Time Pad and Kerckhoffs' Principle

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    7319
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    You can’t learn about cryptography without meeting Alice, Bob, and Eve. This chapter is about the classic problem of private communication, in which Alice has a message that she wants to convey to Bob, while also keeping the contents of the message hidden from an eavesdropper \({ }^{1}\) Eve. You’ll soon learn that there is more to cryptography than just private communication, but it is the logical place to start.


    \({ }^{1}\) "Eavesdropper" refers to someone who secretly listens in on a conversation between others. The term originated as a reference to someone who literally hung from the eaves of a building in order to hear conversations happening inside.


    This page titled 1: One-Time Pad and Kerckhoffs' Principle is shared under a CC BY-NC-SA 4.0 license and was authored, remixed, and/or curated by Mike Rosulek (Open Oregon State) via source content that was edited to the style and standards of the LibreTexts platform; a detailed edit history is available upon request.

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