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AES Guest Lecturer

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Larger Plain Texts<br />

Encryption<br />

• How to avoid frequency analysis<br />

• Answer: Cipher Block Chaining<br />

The original image<br />

An image<br />

encrypted<br />

without any<br />

form of Cipher<br />

Block<br />

Chainging<br />

An image<br />

encrypted<br />

with cipher<br />

block<br />

chainging

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