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Breaking Crypto For Dummies

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<strong>Crypto</strong>graphy Crash Course<br />

• Some history: how did people use and break cryptography?<br />

• Black room<br />

• “Cabinet noir”<br />

== Mallory peeks in the room == broken<br />

• Black box<br />

== Mallory peeks in the box == broken<br />

• Commercial encryption machines<br />

• Kerckhoffs's principle == Mallory has the key == broken<br />

• …<br />

• The present day:<br />

• All of the above<br />

• Internal state == Key<br />

• ???

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